U16, U24 and U32
Professional Audio Mixing Consoles
Operator Manual
MUSIC Group Research UK Limited,
Klark Industrial Park,
Walter Nash Road,
Kidderminster.
Worcestershire.
DY11 7HJ.
England.
Tel: +44 1562 741515
Fax: +44 1562 745371
Email: mkt.info@music-group.com
Website: www.midasconsoles.com
VeniceU — Operator Manual
DOC02-VENICEU Issue E — November 2013
© MUSIC Group IP Limited
© 2013 MUSIC Group IP Ltd. Technical specifications and appearances are subject to change without notice and accuracy is
not guaranteed. MIDAS and KLARK TEKNIK are part of the MUSIC Group (music-group.com).
VeniceU
Operator Manual
iii
Important safety instructions
CAUTION
RISK OF ELECTRIC SHOCK!
DO NOT OPEN!
ATTENTION
RISQUE DE CHOC ELECTRIQUE!
NE PAS OUVRIR!
Terminals marked with this
symbol carry electrical current of
sufficient magnitude to constitute
risk of electric shock. Use only
high-quality commercially-available speaker
cables with ¼" TS plugs pre-installed. All other
installation or modification should be performed
only by qualified personnel.
This symbol, wherever it appears,
alerts you to the presence of
uninsulated dangerous voltage
inside the enclosure - voltage that
may be sufficient to constitute a risk of shock.
This symbol, wherever it appears,
alerts you to important operating
and maintenance instructions in
the accompanying literature.
Please read the manual.
Caution
To reduce the risk of electric
shock, do not remove the top
cover (or the rear section). No
user serviceable parts inside. Refer servicing to
qualified personnel.
Caution
To reduce the risk of fire or
electric shock, do not expose this
appliance to rain and moisture.
The apparatus shall not be exposed to dripping or
splashing liquids and no objects filled with liquids,
such as vases, shall be placed on the apparatus.
Caution
These service instructions are for
use by qualified service personnel
only. To reduce the risk of electric
shock do not perform any servicing other than that
contained in the operation instructions. Repairs
have to be performed by qualified service
personnel.
1
Read these instructions.
2
Keep these instructions.
3
Heed all warnings.
4
Follow all instructions.
5
Do not use this apparatus near water.
6
Clean only with dry cloth.
7
Do not block any ventilation openings.
Install in accordance with the manufacturer's
instructions.
8
Do not install near any heat sources such
as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.
MUSIC Group IP Limited
9
Do not defeat the safety purpose of the
polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other. A
grounding-type plug has two blades and a third
grounding prong. The wide blade or the third
prong are provided for your safety. If the provided
plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.
10
Protect the power cord from being
walked on or pinched particularly at plugs,
convenience receptacles, and the point where
they exit from the apparatus.
11
Use only attachments/accessories
specified by the manufacturer.
12
Use only with
the cart, stand, tripod,
bracket, or table
specified by the
manufacturer, or sold
with the apparatus.
When a cart is used,
use caution when
moving the cart/apparatus combination to avoid
injury from tip-over.
13
Unplug this apparatus during lightning
storms or when unused for long periods of time.
14
Refer all servicing to qualified service
personnel. Servicing is required when the
apparatus has been damaged in any way, such as
power supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or
has been dropped.
15
The apparatus shall be connected to a
MAINS socket outlet with a protective earthing
connection.
16
Where the MAINS plug or an appliance
coupler is used as the disconnect device, the
disconnect device shall remain readily operable.
authorized dealers only. Distributors and dealers
are not agents of MUSIC Group and have
absolutely no authority to bind MUSIC Group by
any express or implied undertaking or
representation. This manual is copyrighted. No
part of this manual may be reproduced or
transmitted in any form or by any means,
electronic or mechanical, including photocopying
and recording of any kind, for any purpose,
without the express written permission of MUSIC
Group IP Limited
ALL RIGHTS RESERVED.
© 2013 MUSIC Group IP Limited
Trident Chambers, Wickhams Cay, P.O. Box 146,
Road Town, Tortola, British Virgin Islands
Limited warranty
§ 1 Warranty
1. This limited warranty is valid only if you
purchased the product from a MUSIC Group
authorized dealer in the country of purchase. A list
of authorized dealers can be found on MUSIC
Group's website www.midasconsoles.com, or you
can contact the MUSIC Group office closest to
you.
2. MUSIC Group* warrants the mechanical and
electronic components of this product to be free of
defects in material and workmanship if used
under normal operating conditions for a period of
three (3) years from the original date of purchase
(see the Limited Warranty terms in § 4 below),
unless a longer minimum warranty period is
mandated by applicable local laws. If the product
shows any defects within the specified warranty
period and that defect is not excluded under § 4,
MUSIC Group shall, at its discretion, either
replace or repair the product using suitable new or
reconditioned product or parts. In case MUSIC
Group decides to replace the entire product, this
limited warranty shall apply to the replacement
product for the remaining initial warranty period,
i.e., three (3) years (or otherwise applicable
minimum warranty period) from the date of
purchase of the original product.
3. Upon validation of the warranty claim, the
repaired or replacement product will be returned
to the user freight prepaid by MUSIC Group.
Legal disclaimer
4. Warranty claims other than those indicated
above are expressly excluded.
Technical specifications and appearances are
subject to change without notice and accuracy is
not guaranteed. MIDAS and KLARK TEKNIK are
part of the MUSIC Group (music-group.com). All
trademarks are the property of their respective
owners. MUSIC Group accepts no liability for any
loss which may be suffered by any person who
relies either wholly or in part upon any description,
photograph or statement contained herein.
Colours and specifications may vary slightly from
product. Midas products are sold through
PLEASE RETAIN YOUR SALES RECEIPT. IT IS
YOUR PROOF OF PURCHASE COVERING
YOUR LIMITED WARRANTY. THIS LIMITED
WARRANTY IS VOID WITHOUT SUCH PROOF
OF PURCHASE.
§ 2 Online registration
Please do remember to register your new Midas
equipment right after your purchase at
www.midasconsoles.com and kindly read the
terms and conditions of our limited warranty
iv
VeniceU
carefully. Registering your purchase and
equipment with us helps us process your repair
claims quicker and more efficiently. Thank you for
your cooperation!
§ 3 Return materials authorization
1. To obtain warranty service, please contact
the retailer from whom the equipment was
purchased. Should your MUSIC Group dealer not
be located in your vicinity, you may contact the
MUSIC Group distributor for your country listed at
www.midasconsoles.com. If your country is not
listed please contact the “United Kingdom (Midas/
KT main office)” located under “Service 
Service/Repairs” on the www.midasconsoles.com
website. Alternatively, please submit the online
warranty return form found under “Service 
Warranty Registration” on
www.midasconsoles.com BEFORE returning the
product. All enquires must be accompanied by the
description of the problem and the serial number
of the product. The warranty eligibility will be
verified from the original sales receipt.
2. Subsequently, the product must be returned
in its original shipping carton, together with the
return authorization number to the address
indicated by MUSIC Group.
3. Shipments without freight prepaid will not be
accepted.
§ 4 Warranty Exclusions
1. This limited warranty does not cover
consumable parts including, but not limited to,
fuses and batteries. Where applicable, MUSIC
Group warrants the valves or meters contained in
the product to be free from defects in material and
workmanship for a period of ninety (90) days from
date of purchase.
2. This limited warranty does not cover the
product if it has been electronically or
mechanically modified in any way. If the product
needs to be modified or adapted in order to
comply with applicable technical or safety
standards on a national or local level, in any
country which is not the country for which the
product was originally developed and
manufactured, this modification/adaptation shall
not be considered a defect in materials or
workmanship. This limited warranty does not
cover any such modification/adaptation,
regardless of whether it was carried out properly
or not. Under the terms of this limited warranty,
MUSIC Group shall not be held responsible for
any cost resulting from such a modification/
adaptation.
3. This limited warranty covers only the product
hardware. It does not cover technical assistance
for hardware or software usage and it does not
cover any software products whether or not
contained in the product. Any such software is
provided "AS IS" unless expressly provided for in
any enclosed software limited warranty.
4. This limited warranty is invalid if the factoryapplied serial number has been altered or
removed from the product.
MUSIC Group IP Limited
5. Free inspections and maintenance/repair
work are expressly excluded from this limited
warranty, in particular, if caused by improper
handling of the product by the user. This also
applies to defects caused by normal wear and
tear, in particular, of faders, crossfaders,
potentiometers, keys/buttons, guitar strings,
illuminants and similar parts.
6. Damage/defects caused by the following
conditions are not covered by this limited
warranty:
•
improper handling, neglect or failure to
operate the unit in compliance with the
instructions given in Midas user or service
manuals;
• connection or operation of the unit in any way
that does not comply with the technical or
safety regulations applicable in the country
where the product is used;
• damage/defects caused by acts of God/
Nature (accident, fire, flood, etc) or any other
condition that is beyond the control of MUSIC
Group.
7. Any repair or opening of the unit carried out
by unauthorised personnel (user included) will
void the limited warranty.
8. If an inspection of the product by MUSIC
Group shows that the defect in question is not
covered by the limited warranty, the inspection
costs are payable by the customer.
9. Products which do not meet the terms of this
limited warranty will be repaired exclusively at the
buyer's expense. MUSIC Group or its authorized
service centre will inform the buyer of any such
circumstance. If the buyer fails to submit a written
repair order within 6 weeks after notification,
MUSIC Group will return the unit C.O.D. with a
separate invoice for freight and packing. Such
costs will also be invoiced separately when the
buyer has sent in a written repair order.
10. Authorized MUSIC Group dealers do not sell
new products directly in online auctions.
Purchases made through an online auction are on
a "buyer beware" basis. Online auction
confirmations or sales receipts are not accepted
for warranty verification and MUSIC Group will not
repair or replace any product purchased through
an online auction.
§ 5 Warranty transferability
This limited warranty is extended exclusively to
the original buyer (customer of authorized retail
dealer) and is not transferable to anyone who may
subsequently purchase this product. No other
person (retail dealer, etc.) shall be entitled to give
any warranty promise on behalf of MUSIC Group.
§ 6 Claim for damage
Subject only to the operation of mandatory
applicable local laws, MUSIC Group shall have no
liability to the buyer under this warranty for any
consequential or indirect loss or damage of any
kind. In no event shall the liability of MUSIC Group
under this limited warranty exceed the invoiced
value of the product.
§ 7 Limitation of liability
This limited warranty is the complete and
exclusive warranty between you and MUSIC
Group. It supersedes all other written or oral
communications related to this product. MUSIC
Group provides no other warranties for this
product.
§ 8 Other warranty rights and national
law
1. This limited warranty does not exclude or limit
the buyer's statutory rights as a consumer in any
way.
2. The limited warranty regulations mentioned
herein are applicable unless they constitute an
infringement of applicable mandatory local laws.
3. This warranty does not detract from the
seller's obligations in regard to any lack of
conformity of the product and any hidden defect.
§ 9 Amendment
Warranty service conditions are subject to change
without notice. For the latest warranty terms and
conditions and additional information regarding
MUSIC Group's limited warranty, please see
complete details online at
www.midasconsoles.com.
* MUSIC Group Macao Commercial Offshore Limited of Rue de
Pequim No. 202-A, Macau Finance Centre 9/J, Macau, including
all MUSIC Group companies
Operator Manual
Other important information
1
Register online. Please register your new Midas equipment right
after you purchase it by visiting www.midasconsoles.com. Registering your
purchase using our simple online form helps us to process your repair claims
more quickly and efficiently. Also, read the terms and conditions of our
warranty, if applicable.
2
Malfunction. Should your MUSIC Group Authorized Reseller not
be located in your vicinity, you may contact the MUSIC Group Authorized
Fulfiller for your country at www.midasconsoles.com. If your country is not
listed please contact the “United Kingdom (Midas/KT main office)” located
under “Service  Service/Repairs” on the www.midasconsoles.com
website. Alternatively, please submit the online warranty return form found
under “Service  Warranty Registration” on www.midasconsoles.com
BEFORE returning the product. All enquires must be accompanied by the
description of the problem and the serial number of the product. The
warranty eligibility will be verified from the original sales receipt.
3
Power Connections. Before plugging the unit into a power socket,
please make sure you are using the correct mains voltage for your particular
model. Faulty fuses must be replaced with fuses of the same type and rating
without exception.
Mac and the Mac logo are trademarks of Apple Inc., registered in the U.S.
and other countries.
Microsoft and Windows are registered trademarks of Microsoft Corporation
in the United States and other countries.
v
vi
VeniceU
MUSIC Group IP Limited
vii
Contents
Important safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii
Other important information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Chapter 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Overview of the VeniceU
Key features . . . . . . . .
Control surface . . . . . .
Rear panel . . . . . . . . . .
External connections . . .
Signal flow . . . . . . . . . .
Mix matrix . . . . . . . . . .
About this manual . . . .
Service and support . . .
Chapter 2
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. .1
. .3
. .4
. .6
. .7
. .8
. 10
. 10
. 11
Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Handling the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electric fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting to balanced/unbalanced equipment . . . . . . . . . . .
Other connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Switching the VeniceU on/off . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 3
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. . . . 13
. . . . 13
. . . . 14
. . . . 14
. . . . 14
. . . . 15
. . . . 16
. . . . 16
. . . . 17
Using The VeniceU With USB . . . . . . . . . . . . . . . . . . . 19
Windows 7 operating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Using the Archwave USB Driver Control Panel . . . . . . . . . . . . . . . . 21
Mac operating system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Updating the VeniceU firmware . . . . . . . . . . . .
Troubleshooting USB operation . . . . . . . . . . . .
Audio problems . . . . . . . . . . . . . . . . . . . . .
Avoiding drop outs . . . . . . . . . . . . . . . . . . .
No devices found . . . . . . . . . . . . . . . . . . . .
Overcoming ground loop problems . . . . . . . .
Chapter 4
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. 31
. 32
. 32
. 32
. 33
. 33
Working With The Console . . . . . . . . . . . . . . . . . . . . . 35
Ground loop problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Chapter 5
Mono Input Channel. . . . . . . . . . . . . . . . . . . . . . . . . . 37
Overview of the mono input channel . . . . . . . . . . . . . . . . . . . . . . . . . 38
Rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
VeniceU
Operator Manual
viii
Contents
EQ . . . . . . . . . . . . . . . .
Monitors . . . . . . . . . . . .
Auxes . . . . . . . . . . . . .
Pan, mute and solo . . . .
Fader, routing and meter
Meter . . . . . . . . . . .
Routing . . . . . . . . . .
Chapter 6
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.41
.42
.43
.44
.45
.46
.46
. . . .48
. . . .49
. . . .50
. . . .50
. . . .51
. . . .51
. . . .52
. . . .52
. . . .53
. . . .54
. . . .55
Output Section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Rear panel . . . . . . . . . . . . . . . . .
Overview of the outputs section . .
Output module notes . . . . . . . . . .
Group-aux changeover . . . . . .
Meter changeover . . . . . . . . . .
Groups . . . . . . . . . . . . . . . . . . . .
USB . . . . . . . . . . . . . . . . . . . . . .
Matrices . . . . . . . . . . . . . . . . . . .
Stereo returns . . . . . . . . . . . . . .
Monitors . . . . . . . . . . . . . . . . . . .
Auxes . . . . . . . . . . . . . . . . . . . .
Master outputs (mono and stereo)
Talkback . . . . . . . . . . . . . . . . . .
Playback and recording . . . . . . . .
Playback . . . . . . . . . . . . . . . .
Recording . . . . . . . . . . . . . . .
Local monitor and phones . . . . . .
Lamps . . . . . . . . . . . . . . . . . . . .
Appendix A
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Multifunction Input Channel . . . . . . . . . . . . . . . . . . . 47
Overview of the multifunction input channel . . . . . . . . . . . . . . . .
Rear panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gain (mic inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stereo line inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Monitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Balance, mute and solo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fader, routing and meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 7
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.58
.59
.60
.60
.60
.61
.62
.64
.66
.67
.68
.69
.71
.72
.72
.72
.73
.74
Functional Block Diagrams . . . . . . . . . . . . . . . . . . . . 75
Mono input module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Stereo input module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Master and monitor modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Appendix B
Technical Specification . . . . . . . . . . . . . . . . . . . . . . . 83
Dimensions
Appendix C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
Headroom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
VeniceU
Operator Manual
ix
Contents
The effect of EQ . . . . . . . . . . .
Dynamic processing . . . . . . . .
Unity Gain . . . . . . . . . . . . . . .
Signal Processing and Amplifiers
Routing . . . . . . . . . . . . . . . . .
FOH mode . . . . . . . . . . . . .
MON mode . . . . . . . . . . . .
Dual FOH/MON Mode . . . . .
Appendix D
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. 88
. 88
. 89
. 89
. 90
. 90
. 91
. 91
Crib Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Mono input channels
Notes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Multifunction input channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Appendix E
Best Grounding Practice. . . . . . . . . . . . . . . . . . . . . . . 97
Safety first . . . . . . . . . . . . . .
Ground loops . . . . . . . . . . . . .
Noise sources . . . . . . . . . . . . .
Noise solutions . . . . . . . . . . . .
Balanced connections . . . . . . .
Balanced transformers . . . . . .
Screen termination . . . . . . . . .
Ground referenced connections
Unbalanced connections . . . . .
Signal ground lift . . . . . . . . . .
XLR shells . . . . . . . . . . . . . . .
Signal ground bonding . . . . . .
Appendix F
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. 97
. 97
. 98
100
101
102
102
103
104
104
105
105
Modification For VeniceU16 Rack Mounting. . . . . . . 107
Electrostatic discharge (ESD) precautions
Rack mounting parts . . . . . . . . . . . . . . .
Special tools required . . . . . . . . . . . . . .
Recommended torque settings . . . . . . . .
Modification procedure . . . . . . . . . . . . .
Appendix G
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107
107
107
107
108
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . 115
Routine maintenance
Cleaning the console .
Troubleshooting . . . .
Special accessories . .
Optional equipment .
Equipment disposal . .
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115
115
115
115
115
116
FEDERAL COMMUNICATIONS COMMISSION COMPLIANCE INFORMATION
117
VeniceU
Operator Manual
x
Contents
VeniceU
Operator Manual
1
Chapter 1: Introduction
Thank you for choosing a Midas VeniceU mixing console. The VeniceU range of consoles
have been developed to meet the needs of demanding live sound engineers and provide
the solution for any audio mixing application in live sound or studio environments. The
VeniceU meets the quality of build and performance that you would expect from a Midas
console.
VeniceU32
The VeniceU was conceived by Midas to offer audio professionals high-performance
audio equipment, designed to provide no-compromise sonic quality with a feature set
that offers all essential facilities and functions. It represents the very best of British
design and engineering combined with contemporary, efficient manufacturing methods,
and will give you many years of reliable service.
Midas has total confidence in the quality and reliability of this product. To back this up,
this product comes with the standard Midas three year warranty.
So, to obtain the best results with a minimum of effort, please read this Operator
Manual and, finally, enjoy your Midas VeniceU!
Overview of the VeniceU
The VeniceU is a premium quality, robust, live sound and studio, small format mixing
console. The VeniceU is available in three sizes — U16, U24 and U32 — and the U16
version can be mounted in a rack. The incorporation of USB bridges the gap between
analogue and digital audio consoles by offering the user the ease-of-use, warmth, feel,
and zero-latency of analogue, combined with the power, choice and flexibility of
outboard digital processing. Physically, it’s a one-piece solution provided in a
substantial chassis with cosmetic trim suitable for use and storage in a road flight case
(not provided). All circuitry — analogue, digital and power — is housed inside this box.
Equally at home as an all-purpose front of house (FOH) or studio console, the VeniceU
can also be used for monitors. The VeniceU is quickly and easily configurable, with
each mono input channel offering microphone (mic) and line inputs, direct out and
insert points, and a four-band fully swept equaliser stage. In addition, the VeniceU has
VeniceU
Operator Manual
2
Chapter 1: Introduction
a flexible bus structure that lets the engineer configure the console for different
applications.
The VeniceU consoles (U16 left, U24 top and U32 bottom)
All variants include four multifunction input channels for use on various sources. These
share single control knobs and have slightly different functionality as compared to the
mono channels.
The VeniceU lets the user route to any of 13 other buses — six auxiliaries (including two
monitors), four groups and three masters (stereo left and right, and mono). There are
also two matrix buses, which are a submix of the master buses, and three solo buses
(two after-fader listen (AFL) and one pre-fader listen (PFL)).
All major inputs and outputs are on balanced XLR connectors. The following table gives
a ‘quick stats’ comparison of the VeniceU consoles (where: XLRF = XLR female; XLRM =
XLR male; TRS = 1/4” TRS Jack; and RCA = phono plug).
Item
U16
U24
U32
Mic inputs
12 mono XLRF
20 mono XLRF
28 mono XLRF
Line inputs
8 mono and
8 stereo TRS
16 mono and
8 stereo TRS
24 mono and
8 stereo TRS
Aux returns
4 stereo TRS
4 stereo TRS
4 stereo TRS
Playback input
2 stereo RCA
2 stereo RCA
2 stereo RCA
Talkback mic input
1 XLRF
1 XLRF
1 XLRF
Aux mix buses (includes
2 monitors)
6 XLRM
6 XLRM
6 XLRM
Audio subgroups
4 XLRM
4 XLRM
4 XLRM
Matrices
2 XLRM
2 XLRM
2 XLRM
Stereo master output
2 XLRM
2 XLRM
2 XLRM
VeniceU
Operator Manual
3
Key features
Item
U16
U24
U32
Mono master output
XLRM
XLRM
XLRM
USB I/O
4 stereo
channel, Type B
4 stereo
channel, Type B
4 stereo
channel, Type B
The USB interface can be used with any personal computer (PC) fitted with a standard
USB 2.0 port, and is effectively a digital multi-channel cable (up to 8 in and 8 out
channels) for connecting the PC to the console. USB lets you use any third party audio
processing software in conjunction with the console, and applications include
multi-track recording, software-generated effects processors and “plug-ins” inserted on
input dual stereo channel USB send/returns.
Key features
The VeniceU consoles include the following key features:
•
Sizes — available in 16, 24 and 32 input channel frame sizes.
•
Midas mic preamps — 12/20/28 overload-tolerant Midas mic preamps (the last
four being on four stereo modules), which accept +32dBu.
•
EQ — each mono channel has a 4-band swept EQ (treble, hi mid, lo mid and bass).
•
4-band EQs on stereo channels — 4-band fixed frequency EQs on stereo
channels.
•
Ease of use — easy to store, prep, configure, maintain, repair, transport,
set up/down and clean.
•
Hybrid technology — analogue technology for sound processing and mixing, and
digital connectivity provided by USB. Analogue or digital (USB) input and analogue
or digital (USB) output.
•
USB — up to 8 in and 8 out channel USB interface (USB type B socket) that provides
I/O connectivity to the multifunction input channels. The USB inputs feed the buses,
while the USB outputs are sourced from the buses and are selectable using the
changeover switches. Allows the use of external DAW-based effects and recording.
•
Mono input channels — mic/line in, insert and direct out per channel. Each
channel mic pre-amp has +48V phantom volt, +20dB pad, 80Hz high pass filter and
polarity switches.
•
Multifunction input channels — mono mic in, left (or mono) and right line in, and
stereo USB in (same mic pre-amp functions as the mono inputs).
•
Master channels — mono, left and right master channels, each with an insert.
•
15 Buses — 6 aux sends (includes 2 monitor (foldback) sends that are globally
switchable pre-/post-fader), 4 groups, 3 masters (2 stereo and a mono) and 2
matrices, all with hardware outputs.
•
Returns — 2 stereo returns with flexible routing options.
•
Local outputs — 2 local outputs (left and right).
•
Routing — individual switch routing to stereo, mono and two pairs of groups.
•
Metering — 4-LED meter per mono and stereo input channels, and per group, and
3 x 12-LED master/solo meters.
•
Faders — high-precision 100 mm faders.
•
48V phantom power — all analogue audio I/O is tolerant of 48V connection.
•
I/O connectors — all main inputs and outputs are on balanced XLR connectors.
VeniceU
Operator Manual
4
Chapter 1: Introduction
•
Mains power supply — universal switch mode power supply unit (PSU) with mains
input socket and on/off switch.
•
Lamps — socket(s) for fitting lamps.
•
Playback/record I/Os — input/output sockets for playback and recording.
•
Warranty — standard Midas 3-year warranty.
Control surface
The surface of the VeniceU can be divided into the following main vertical sections.
1
2
3
Control surfaces of the VeniceU consoles showing the three mains areas
VeniceU
Operator Manual
5
Control surface
Item
Description
1
See Chapter 5 "Mono Input Channel" on page 37
2
See Chapter 6 "Multifunction Input Channel" on page 47
3
See Chapter 7 "Output Section" on page 57
VeniceU
Operator Manual
6
Chapter 1: Introduction
Rear panel
The VeniceU has a rear panel that houses the following.
1
2
11
3
10
4
9
5
4
6
U32
8
7
U24
U16
Rear panels of the VeniceU consoles showing the main areas
Item
Description
1
See “Master outputs (mono and stereo)” on page 69.
2
See “Stereo returns” on page 66, “Groups” on page 61, “Matrices” on
page 64, “Monitors” on page 67 and “Auxes” on page 68.
3
See Chapter 6 "Multifunction Input Channel" on page 47.
4
Ventilation grills. Do not obstruct.
5
See Chapter 5 "Mono Input Channel" on page 37.
6
See “Lamps” on page 74.
7
See “Switching the VeniceU on/off” on page 17.
8
See “USB” on page 50 and page 62.
9
See “Playback and recording” on page 72.
10
See “Local monitor and phones” on page 73.
11
Serial number plate.
VeniceU
Operator Manual
7
External connections
A
G
B
C
E
D
F
Rear panel of the VeniceU16 showing the main connector sections
A. Inserts and returns. B. Mono input channel (insert, direct out, line in and mic in).
C. Multifunction input channel (insert, direct out, line in left (mono) and right, and mic
in). D. Playback I/Os (left and right). E. Local monitor outputs. F. Aux, group, matrix
and monitor outputs. G. Stereo and mono master inserts and outputs.
External connections
The following table details all of the external connections on the VeniceU.
Connection(s)
Description
Notes
All mic inputs
Balanced XLR connectors,
2K load
Mono and stereo channels
All primary line inputs
Balanced Jacks 10K load
Mono and stereo channels
All inserts
Jack connectors, 50R
source, 10K load
Mono and master
channels
Group, matrix and
monitor buses
Stereo returns
VeniceU
Operator Manual
8
Chapter 1: Introduction
Connection(s)
Description
Notes
All primary outputs
Balanced XLR connectors,
50R source
Master channels
Aux, group, matrix,
monitor and local
(monitor) buses
All secondary outputs
(direct outs)
Balanced Jack connectors,
50R source
Mono channels
Headphone outputs
Jack connectors, 10R
source (nominal +10dB)
local monitor section of
outputs (control surface)
Playback left and right
inputs and outputs
Unbalanced phono
connectors: input is 47k
load -10dB and output is
600R source (nominal
-10dB)
Rear panel
USB connection
Type B connector
Rear panel
Power connections
IEC mains inlet
Rear panel
4-pin XLR lamp power
outlets
Under top edge of rear of
console or on control
surface (U16 only)
Signal flow
The following table gives an overview of the basic signal flow.
Channels or inputs
Route to
8, 16 or 24 mono mic/line channels
2 monitor, 4 aux, 4 group and 3 master
buses
4 mono mic channels
2 monitor, 4 aux, 4 group and 3 master
buses
4 stereo line inputs
The same numbered stereo channel and
then onwards (as above)
2 stereo return channels
2 monitor, group 1-2 (return 1) and
group 3-4 (return 2), and the stereo
master buses
4 group channels
3 master and 2 matrix buses
3 master channels
2 matrix buses
4 aux channels
N/A
2 monitor channels
N/A
2 matrix channels
N/A
All channel types can also access the PFL, and AFL (left and right) solo buses.
VeniceU
Operator Manual
9
Signal flow
The following table shows the signal flow in detail.
Signal
Sourced from
Routed to
Mono
Balanced XLR mic/line
input or balanced Jack line
input (common gain
control with above) or
insert return
Buses, insert Jack, direct
output Jack
Stereo
Balanced XLR mic/line
input and balanced Jack
line input (independent
gain control) or USB
connection
Insert Jack (mic input
only), direct output Jack
Stereo return
Balanced Jack
Buses
Group
Bus
Master and matrix buses,
insert Jack, group output
balanced XLR and optional
USB connection (in place
of aux send)
Aux
Bus
Aux output balanced XLR
and USB connection
Monitor
Bus
Insert Jack, monitor
output balanced XLR and
USB connection
Matrix
Insert Jack
Insert Jack, matrix output
balanced XLR and optional
USB connection (in place
of stereo master)
Stereo master bus
Bus, input channels,
group buses, stereo
returns or playback
Insert Jack, master output
balanced XLR and USB
connection
Mono master bus
Bus, input channels,
group buses or sum of
stereo bus
Insert Jack and master
output balanced XLR
VeniceU
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Chapter 1: Introduction
Mix matrix
Ultimately, the mix matrix defines the capability of each VeniceU. It follows the console
layout, where inputs run vertically and buses run horizontally. A mix matrix is usually
defined as the number of buses and the quantity of simultaneously-mixable inputs
there are per bus.
8/16/24 mic/line inputs
8 mic/line return inputs
6 aux buses
(include 2 monitors)
Bus outputs
4 group
buses
3 master (stereo
and mono) buses
2 matrix
buses
3 solo
buses
VeniceU mix matrix
About this manual
This is the Operator Manual for the VeniceU. Its purpose is to familiarise the user with
the VeniceU and show how to install, set up, configure and operate the VeniceU.
This manual uses the following conventions:
•
The exclamation mark (shown right) is intended to alert the user to important
operating instructions.
•
The drawing pin (shown right) appears next to useful information, which
provides hints and tips.
VeniceU
Operator Manual
Service and support
11
•
There are diagrams throughout the
manual that show you where on the
console the local information is referring
to. These areas are indicated by blue
shading. For example, the mono input
channels, as shown right.
•
Unless otherwise stated, an illuminated LED means that its related control/function
is on and when extinguished it is off.
•
Although this manual is based on the VeniceU32 (pictures shown throughout), the
information also applies to the U16 and U24 models unless stated otherwise.
Service and support
We provide superb levels of support and service to give users confidence in Midas
products. For more information, please contact your local distributor or Midas at the
address shown in the front of this manual.
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Chapter 1: Introduction
VeniceU
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13
Chapter 2: Getting Started
This chapter shows you how to prepare the VeniceU for operation, which includes:
•
Installation
•
Connecting up
•
Setting up
•
Powering up
Before installing, setting up or operating this equipment make sure you have
read and fully understand all of the “IMPORTANT SAFETY INSTRUCTIONS” at
the front of this document and observe the following precautions.
Installation
The position of the console will vary from venue to venue. When installing the console,
take the following into consideration.
•
Before installing and operating this Class 1 equipment, make sure it is correctly
connected to the protective earth conductor of the mains voltage supply socket
outlet through the mains lead.
•
When positioning the console for FOH use it is worth placing the console in a position
where the sound system used can be heard properly from the mix position. Try to
avoid placing the console behind pillars or large objects, or mixing from a level
above the speaker position (for example, from a balcony).
•
The console should be located in a convenient space commensurate with the use to
which the console is being put.
•
Ideally a cool area is preferred, away from power distribution equipment or other
potential sources of interference.
•
Do not install the equipment in places of poor ventilation.
•
Do not install this equipment in a location subjected to excessive heat, dust or
mechanical vibration. Allow for adequate ventilation around the equipment, making
sure that its fans and vents are not obstructed. Whenever possible, keep the
equipment out of direct sunlight.
•
Do not place the equipment in an unstable condition where it might accidentally fall
over.
•
Provision should be made for some flat surface surrounding the console to prevent
people using it as a table top.
Handling the equipment
When lifting or moving the equipment, always take its size and weight into
consideration. If necessary, use suitable lifting equipment or transporting gear, or
sufficient additional personnel.
Completely isolate the equipment electrically and disconnect all cables from the
equipment before moving it.
Do not insert your fingers or hands in any gaps or openings on the equipment, for
example, vents.
VeniceU
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14
Chapter 2: Getting Started
Electric fields
Should this product be used in an electromagnetic field that is amplitude modulated by
an audio frequency signal (20Hz to 20kHz), the signal to noise ratio may be degraded.
Degradation of up to 60dB at a frequency corresponding to the modulation signal may
be experienced under extreme conditions (3V/m, 90% modulation).
Connecting up
To ensure the correct and reliable operation of your equipment, only high quality,
balanced, screened, twisted pair audio cable should be used.
XLR connector shells should be of metal construction so that they provide a screen
when connected to the console and, where appropriate, they should have Pin 1
connected to the cable screen.
All Jack connector shells should be connected to the cable screen.
Audio connections
This section gives details of the audio connections of the VeniceU.
Table 1: Connector pinouts
Connector on rear
panel
Example of plug
Pinouts
Male XLR chassis
connector (output)
Example of socket
1 = ground
2 = hot
3 = cold
2
1
3
Female XLR chassis
connector (mic input)
1 = ground
2 = hot
3 = cold
1
2
3
Pair of RCA
connectors (tape
in/out)
1 = ground
2 = signal
1
2
1/4” TRS Jack plug
(inserts)
3 2 1
1/4” TRS Jack plug
(input, output)
3
1
1 (tip) = send
2 (ring) = return
3 (sleeve) =
ground
1 (tip) = hot
2 (ring) = cold
3 (sleeve) =
ground
VeniceU
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15
Connecting up
Connecting to balanced/unbalanced equipment
Sleeve
Ring
Tip
The inserts of the VeniceU are unbalanced. Ideally, you will be connecting the inserts
to balanced equipment to help avoid noise problems due to grounding.
Input and output
sockets on rear of
external device
1/4” TRS Jack
Send
Male XLR
Return
Female XLR
Rear of VeniceU console
Screen
1
2
3
2
Male XLR
1
Female XLR
3
Sleeve
Ring
Tip
Figure 1: Connecting to balanced equipment
Send
Tip
1/4” TRS Jack
Sleeve
Sleeve
Ring
Tip
However, if you do have to connect to unbalanced devices, the following wiring is
recommended for best results.
Sockets on
rear of
external
device
Input
Return
Output
1/4” TS Jack
Rear of VeniceU console
Input
Sleeve
Ring
Tip
Screen
Output
Tip
Sleeve
Figure 2: Connecting to unbalanced equipment
Important:
If you have any audio problems, see Appendix E "Best Grounding Practice" on
page 97.
VeniceU
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Chapter 2: Getting Started
Other connections
The section gives details of the other VeniceU interconnections.
Description
Example of plug or
device
Pinouts
Example of socket
4-pin, male XLR
chassis connector(s)
on the rear panel for
connecting 12V/5W
lamp(s)
1
2
3
4
2
1
Female XLR chassis
connector (talk mic)
1 = ground
2 = hot
3 = cold
=
=
=
=
N/A
N/A
ground
12V
3
1
USB socket for type B
connector. (The
supplied USB lead is
terminated in a type B
connector and a type
A connector.)
3
4
2
N/A
Important:
If you have any
audio problems
these may be due
to ground loops
(see Appendix
E "Best Grounding
Practice" on
page 97).
Headphones socket in
the local monitor
section of the control
surface for connecting
a 1/4” TRS Jack plug.
There is also one
under the armrest on
the desktop versions.
3 2 1
1 (tip) = left
2 (ring) = right
3 (sleeve) =
ground
Setting up
There is no initial setting up required for the VeniceU console. However, if you want to
use USB, you will need to set up your PC first (see Chapter 3 "Using The VeniceU With
USB" on page 19).
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17
Switching the VeniceU on/off
Switching the VeniceU on/off
Switch the VeniceU on/off via the mains switch on the rear panel.
A
B
Mains power supply input on the rear panel. A. Mains on/off switch. B. Mains power
supply socket (IEC connector).
VeniceU
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18
Chapter 2: Getting Started
VeniceU
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19
Chapter 3: Using The VeniceU With
USB
This chapter shows you how to prepare your PC/Mac® for USB operation. The VeniceU
console has been tested and verified for USB use with the following computer operating
systems: a PC running Windows® 7 and a Mac running OS® X (version 10.7 or later).
However, we cannot guarantee correct USB operation on any other computer
operating system.
All of the files that you should need for USB operation on the VeniceU, such as, drivers,
recording templates, demos, etc., can be downloaded from the MIDAS website.
Windows 7 operating system
This section shows how to install and set up USB on a PC running the Windows 7
operating system.
>> To install the USB device driver on your PC
Do not connect the USB cable to the PC before installing the device driver.
Important:
Before installing the USB device driver, we recommend that you make sure
it is the latest version by checking the www.midasconsoles.com website.
This is important, as you may not be able to use USB operation properly
with an older version of the device driver.
1
The USB device driver software can
be found on the MIDAS website.
2
Navigate to the DRIVERS section on the website to download the latest
versions, then double-click the “setup.exe” file to start the setup wizard.
VeniceU
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Chapter 3: Using The VeniceU With USB
3
In the User Account Control dialog
box, click Yes.
4
In the “Welcome ...” screen of the
Setup dialog box, click Next.
5
In the “Choose Install Location” screen
of the Setup dialog box, choose the
destination of the USB driver and click
Install.
The installation will begin.
6
During the installation procedure the
following dialog box will appear. Plug
the USB cable into the VeniceU console
(type B connector) and into your PC
(type A connector). Then switch on the
console and click OK in the dialog box.
VeniceU
Operator Manual
Windows 7 operating system
7
The installation procedure should
continue. After the installation has
been completed successfully, click
Next.
8
In the “Completing ...” screen of the
Setup dialog box, click Finish.
9
The Archwave icon
should appear
in the task bar at the lower-right
corner of the screen.
21
Using the Archwave USB Driver Control Panel
In general, you should be able to use your recording software application on your PC
quite successfully using the default USB settings. However, you can change these
settings if desired (for example, if you have audio problems), which is done in the
Archwave USB Driver Control Panel window.
Note: The settings available for configuration may be dependent on a number of
variables, such as the hardware specification of the PC, the recording software
application, etc. So, the setting you may want to adjust may be available for change in
the recording software application itself.
VeniceU
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Chapter 3: Using The VeniceU With USB
1
2
3
4
5
6
7
9
8
Archwave USB Driver Control Panel window
Item
Element
1
File menu. Contains the Close and Quit commands. Selecting Close
hides the application in your desktop’s taskbar. Selecting Quit closes the
application.
2
Info menu. Contains the About Control Panel command, which opens
the About Control Panel dialog box that gives you information on the
application.
3
Panel associated with the selected option.
4
Minimise button. Hides the application in your desktop’s taskbar.
5
Maximise button. This has no function in this window.
6
Close button. Closes the application without saving any changes.
7
Menu bar.
8
Status bar. The left panel shows information on the currently selected
option, command, etc., and the right panel shows the number of connected
devices.
9
List of options.
>> To open the Archwave USB Driver Control Panel window
On your PC desktop, double-click the Archwave USB Driver
Control Panel icon.
VeniceU
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23
Windows 7 operating system
Devices option
The Devices option lets you manage your audio system USB devices.
1
2
3
4
Item
Element
1
List of connected devices, showing the device name and serial number of
each.
2
Up and Down buttons. These buttons change the position of a device in
the list of connected devices by moving it up/down one place at a time.
3
Edit Device Name button. Lets you change the name of a device.
4
Apply button. Applies any changes you have made in this window.
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Chapter 3: Using The VeniceU With USB
Input Channels option
The Input Channels option lists all of the input channels (also known as active input
channels) in your audio system.
1
4
3
2
Item
Element
1
List of input channels.
2
Include device name in ASIO display name check box. When this
check box is selected, device names are included in the ASIO display
name column.
3
Edit Channel Name button. Lets you change the name of an input
channel.
4
Hardware name of selected channel field. Shows the default name of
the selected input channel.
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Windows 7 operating system
Output Channels option
The Output Channels option lists all of the output channels (also known as active
output channels) in your audio system.
1
4
3
2
Item
Element
1
List of output channels.
2
Include device name in ASIO display name check box. When this
check box is selected, device names are included in the ASIO display
name column.
3
Edit Channel Name button. Lets you change the name of an output
channel.
4
Hardware name of selected channel field. Shows the default name of
the selected output channel.
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Chapter 3: Using The VeniceU With USB
Synchronisation option
The Synchronisation option lets you choose the sample rate frequency and clock
source.
1
2
3
Item
Element
1
Sampling Rate Selection Mode frame, lets you set the sampling rate
automatically or manually. Click the Automatic Mode option button to let
the system set the sampling rate or click the Manual Mode option button if
you want to set the sampling rate yourself. The Apply button stores any
changes.
2
Sampling Rate frame, lets you set the sampling rate (samples per second)
manually as 44.1kHz or 48.0kHz. The Apply button stores any changes
made. (This frame is not available in automatic mode of sample rate
selection.)
3
Clock Source frame, lets you choose the clock source as Internal Clock or
USB-Bus (SOF).
VeniceU
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27
Windows 7 operating system
Settings option
The Settings option lets you select the buffer sizes that your PC will use for your
recording software.
Select buffer size according to your equipment, remembering that if it is too
small you will suffer audio clicks and pops, and if it is too large there will be
audible delays (latency).
1
2
3
Item
Element
1
Isochronous Streaming frame, lets you set the stream buffer depth in
the range 1.0 ms to 16.0 ms (default is 2.0 ms). The Apply button stores
any changes.
2
Audio Buffers frame, lets you set the buffer depths for the ASIO and WDM
audio device drivers. Both buffer depths can be set between 1.0 ms (88
samples) and 80.0 ms (3608 samples), and their default is 10.0 ms (528
samples). The Apply buttons store any changes made to their associated
parameter.
3
ASIO Statistics frame, displays the number of detected drop outs, that is,
intermittent drops in audio.
VeniceU
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Chapter 3: Using The VeniceU With USB
Streams option
The Streams option shows the audio and sync I/O connections for each connected
device.
VeniceU
Operator Manual
Mac operating system
29
Mac operating system
USB, when used with a Mac running OS® X (version 10.7 or later), is a ‘plug and play’
device. So, unlike on a PC running Windows® 7, there is no need to install a USB
device driver.
Note: The settings available for configuration may be dependent on a number of
variables, such as the hardware specification of the Mac, the recording software
application, etc. So, the setting you may want to adjust may be available for change in
the recording software application itself.
VeniceU
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30
Chapter 3: Using The VeniceU With USB
VeniceU
Operator Manual
Updating the VeniceU firmware
31
Updating the VeniceU firmware
The latest version of the USB firmware for the VeniceU will be available on the Midas
website (address is on the front cover of this manual).
>> To update the VeniceU with the latest firmware
The following procedure is based on a PC running Windows® 7. However, the
procedure for updating the console’s firmware should be similar if you are using a Mac
running OS® X (version 10.7 or later).
1
If necessary, connect the USB cable to the PC and the console, and switch the
console on.
2
Download the latest VeniceU firmware
file from the Midas website onto your
PC or plug a USB memory stick loaded
with this file into your PC. If you see a
User Account Control dialog box,
click Yes.
3
Locate the VeniceU firmware file on
your PC and double-click it.
In this example the file is called
“MidasUpgradeTool x64” and is in the
“VeniceU/MidasVeniceU_UpgradeTools”
folder. The “x64” suffix means that the
file is for a 64-bit operating system. A
file without this suffix is for a 32-bit
operating system.
4
VeniceU
Operator Manual
In the Midas VeniceU Upgrade dialog
box, click Update.
32
Chapter 3: Using The VeniceU With USB
5
In the deviceUpgrade_64 dialog box,
click Yes.
The installation will begin.
6
If the upgrade was successful, you
should see the following Midas
Firmware Upgrade dialog box. Click
OK.
Troubleshooting USB operation
This section may help you overcome any problems that may arise when using USB with
your audio system.
Audio problems
If you encounter any problems with the audio, for example, when recording, try
changing the USB settings.
Avoiding drop outs
In general, the higher the driver settings for buffer depth are, the more reliable the
audio streaming will be, but the higher the audio latency will be. The latency is the time
delay between the audio signal entering your VeniceU and being available at your
computer (also the return path from your computer to the console). This will be
particularly noticeable when monitoring the output of real time effects in your digital
audio software.
There are a number of helpful websites available with hints and tips on how best to finetune a Windows machine for handling USB audio. These list various settings to change,
or activities to perform including: changing processor scheduling, deactivating unused
devices, disabling power saving modes and making sure the correct drivers are installed
for other components on your system such as graphics cards. Also avoid running other
processor hungry applications alongside your audio software.
VeniceU
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Troubleshooting USB operation
33
No devices found
If no devices appear in the driver control panel, it means that the PC/Mac cannot detect
a device. Do one of the following:
•
Connect the VeniceU to your PC/Mac.
•
If the VeniceU is already connected to your PC/Mac, check that the connections are
good.
Overcoming ground loop problems
See Appendix E "Best Grounding Practice" on page 97.
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Chapter 3: Using The VeniceU With USB
VeniceU
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35
Chapter 4: Working With The Console
The following chapters give a description of the controls on the console surface and
include useful operating information.
•
Chapter 5 "Mono Input Channel" on page 37
•
Chapter 6 "Multifunction Input Channel" on page 47
•
Chapter 7 "Output Section" on page 57
Before using USB, read Chapter 3 “Using The VeniceU With USB”.
Ground loop problems
In the event of ground loop problems, disconnect the signal screen at one end of the
connecting cables. Note that this can only be done when the equipment is used with
balanced cable systems. For more information, see Appendix E "Best Grounding
Practice" on page 97.
VeniceU
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Chapter 4: Working With The Console
VeniceU
Operator Manual
37
Chapter 5: Mono Input Channel
This chapter details the mono input channels (8/16/24) of the VeniceU. It describes the
sections of each channel on the control surface and the related connectors on the rear
panel.
Mono input channels on the control surface (U32 shown)
Although the actual number of mono input channels on your VeniceU will depend upon
your choice of frame, their function remains the same.
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38
Chapter 5: Mono Input Channel
Overview of the mono input channel
Each mono channel has an XLR input that can be used for mic or line
level signals up to +32dBu. An additional 1/4” inch TRS Jack socket,
provides an input for line level signals that require protection against
accidental 48-volt connection. The line input gives 10dB of permanent
attenuation to the input signal, which allows the connection of
extremely high line level signals of up to +42dBu with the pad
engaged.
Item
Section
1
Gain (see “Gain” on page 40)
2
EQ (see “EQ” on page 41)
3
Monitor and aux contributions (see “Monitors” on page 42
and “Auxes” on page 43)
4
Pan (see “Pan, mute and solo” on page 44)
5
100 mm fader and meter (see “Fader, routing and meter” on
page 45)
1
2
3
4
5
VeniceU
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39
Rear panel
Rear panel
The VeniceU channel inputs are located on the rear panel of the console and each
channel comprises the following.
1
2
3
4
Mono input channel connectors
Item
Description
1
insert connector Insert point on a single 1/4” TRS Jack socket. This is
unbalanced and requires a conventionally-wired insert lead.
2
direct out connector
socket.
3
line in connector
4
mic connector
connector.
Direct output on a single, balanced 1/4” TRS Jack
Line in on a single, balanced 1/4” TRS Jack socket.
Mic input on a single, balanced XLR female chassis
The direct out and insert points operate at a nominal level of 0dBu.
Balanced XLR and Jack inputs are conventionally wired (see Table 1 “Connector
pinouts” on page 14).
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Chapter 5: Mono Input Channel
Gain
This section lets you adjust the level of the mic input signal, switch on 48 volts phantom
power for the mic, attenuate the input signal by 20dB, invert the mic polarity and
enable the high pass filter on the mic input.
5
1
2
4
3
Mic gain section of the mono input channels
Item
Description
1
20dB pad switch This pad switch provides 20dB attenuation to the input
signal, allowing for the connection of high output microphones and line level
signals without overloading the channel input amplifier. Overloads are
indicated on the meter by the red LED at the top (see “Fader, routing and
meter” on page 45).
2
mic gain control knob The mic gain is continuously variable from +10dB
to +60dB (-10dB to +40dB with the pad enabled). The actual value of the
gain required will depend upon the source and should ideally be set such
that peaks in level on the input should not cause the input amplifier to
overload (occasional peaks of +12dB are OK, but +18dB is too high).
3
80Hz switch The high pass switch inserts the 80Hz hi pass filter in the
input channel signal path before the insert point and EQ. This is commonly
used to remove handling noise from a mic, bass rumble through coupling
with the stage or any unwanted low frequency audio.
4
mic Ø switch This is a microphone polarity switch that causes a
180-degree phase change (with respect to the input signal) to occur in the
input amplifier such that the channel signal will have opposite polarity to
the input signal.
The mic Ø switch is commonly needed where two microphones are used
facing each other (for example, when using a microphone on both the top
and bottom of a snare drum). Ordinarily the two microphones would be out
of phase causing cancellation when the console sums the two signals into
the output. Reversing the phase of one signal causes the microphones to
have the same phase and no cancellation.
5
48V LED and power switch The power switch applies 48 volts of
phantom power to the microphone input. This is used to power condenser
microphones, direct inject boxes and other devices that require phantom
power. The 48V LED illuminates to show that phantom power is on.
VeniceU
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41
EQ
EQ
Each mono input channel of the VeniceU has a four-band, swept EQ, allowing tonal
control over the input signal.
1
2
3
4
5
EQ section of the mono input channels
Item
Description
1
Treble gain/freq control knob This dual-concentric control knob adjusts
the gain/frequency of the treble EQ:
2
3
VeniceU
Operator Manual
•
gain The top control knob adjusts the gain of the treble band, which is
continuously variable from -15dB to +15dB with a centre detent of 0dB.
•
freq The bottom control knob adjusts the centre frequency of the treble
band, which is continuously variable from 2kHz to 20kHz.
Hi mid gain/freq control knob This dual-concentric control knob adjusts
the gain/frequency of the hi mid EQ:
•
gain The top control knob adjusts the gain of the hi mid band, which is
continuously variable from -15dB to +15dB with a centre detent of 0dB.
•
freq The bottom control knob adjusts the centre frequency of the
hi mid band, which is continuously variable from 400Hz to 8kHz.
Lo mid gain/freq control knob This dual-concentric control knob
adjusts the gain/frequency of the lo mid EQ:
•
gain The top control knob adjusts the gain of the lo mid band, which is
continuously variable from -15dB to +15dB with a centre detent of 0dB.
•
freq The bottom control knob adjusts the centre frequency of the
lo mid band, which is continuously variable from 100Hz to 2kHz.
42
Chapter 5: Mono Input Channel
Item
Description
4
Bass gain/freq control knob This dual-concentric control knob adjusts
the gain/frequency of the bass EQ:
5
•
gain The top control knob adjusts the gain of the bass band, which is
continuously variable from -15dB to +15dB with a centre detent of 0dB.
•
freq The bottom control knob adjusts the centre frequency of the bass
band, which is continuously variable from 20Hz to 200Hz.
EQ switch and red LED The EQ switch enables the EQ. With EQ disabled,
adjustment of the EQ controls has no effect. This can be used to compare
the sound with and without EQ. The red LED illuminates to show that EQ is
enabled.
Monitors
The two monitor sends per input channel have the same functionality as the auxes (see
“Auxes” on page 43). However, they have the following additional features:
•
They can be sourced pre-EQ.
•
They can be metered individually (see “Monitors” on page 67).
•
They can receive a contribution from the stereo returns (see “Stereo returns” on
page 66).
•
They have a latchable talk button (see “Talkback” on page 71).
2
1
Monitor section of the mono input channels
Item
Description
1
Monitor control knob The monitor control knobs give continuous
adjustment of the signal sent from the input channel to the monitor buses
(default is post-fader and post-EQ) in the range
4 (infinity/off) to +6dB.
2
pre eq switch Changes the source of the monitor sends to pre-EQ,
provided the bus is set to be pre-fader via the pre switch in the output
section (see “Monitors” on page 67).
Either monitor send can be sourced pre-fader globally using the pre switch in the
output section (see “Monitors” on page 67).
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43
Auxes
Auxes
The VeniceU has four aux sends per input channel, which can be used for effects sends,
monitors or as extra assignable outputs from the console. Each aux has a control knob
that gives continuous adjustment of the level sent from the input channel to the aux
buses, in the range 4 (infinity/off) to +6dB.
Aux sections of the mono input channels
Auxes are post-EQ and post-fader, but each of the four aux buses can be independently
switched globally to pre-fader using the pre switch in the outputs section (see “Auxes”
on page 68).
•
Post-fade aux sends are sourced after the channel insert, mute, EQ and channel
fader. As a result, the actual level sent to the aux bus is proportional to the aux
send control and the channel fader.
•
Pre-fade aux sends are sourced after the channel insert, mute and EQ, but before
the channel fader. As a result, the actual level sent to the aux bus is proportional to
the aux send control only.
The following table shows some typical uses for auxes.
Application
Pre-/Post-fade
Reason
Stage monitors
Pre-fade (post-EQ)
The level in the monitor stays constant,
so that the engineer can change the FOH
fader level without affecting the
performer.
Effect sends
Post-fade (post-EQ)
The level sent to the effects is
proportional to the level on the fader, so
the balance between wet (processed)
and dry (unprocessed) sound stays the
same, even when the channel level is
changed.
Mixed recording
Post-fade (post-EQ)
If the aux is set to unity the FOH mix is
replicated on the aux output. This
includes EQ, but excludes pan.
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Chapter 5: Mono Input Channel
Pan, mute and solo
The VeniceU has pan, mute and solo per mono input channel.
1
2
3
Pan, mute and solo sections of the mono input channels
Item
Description
1
pan control knob The pan control allows the channel signal to be
positioned in a stereo field when routed to the stereo bus, or when group
sends are configured to be stereo. The pan control allows continuous
adjustment of the image from hard left, to hard right with a centre detent,
and obeys a constant power law (that is, -3dB at the centre).
2
MUTE switch and red LED The MUTE switch mutes the channel signal.
The signal will still be sent to the insert point and to the direct
output. The mute LED illuminates to show that the MUTE switch is on.
3
SOLO switch and yellow LED With solo enabled the channel signal is
sent to the after-fade listen (AFL) stereo and pre-fade listen (PFL) mono
buses. The left and right local monitor outputs can be used, for example,
when operating from within a booth to hear selected solos and not the
whole mix. The solo LED illuminates to show when a solo is on.
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Fader, routing and meter
Fader, routing and meter
The VeniceU is a flexible mixing console with four group buses, plus stereo and mono,
with a 100 mm fader and a four-LED signal meter per mono input channel.
1
2
3
4
5
Fader section of the mono input channels
Item
Description
1
LED meter These four LEDs comprise the input channel meter, which lets
you monitor the input signal without having to use the PFL.
2
Fader This channel fader allows for continuous adjustment of the channel
level from 4 (infinity/off) to +10dB. At 0dB the output of the channel to the
stereo, mono and group buses will be at unity, that is, no adjustment in
level from the input.
3
Group switches Two latching switches route the channel to group 1 or 2,
or group 3 or 4. See “Routing” on page 46.
4
mono switch This switch routes the channel signal to the mono bus
(post-EQ, pre-pan, post-mute and post-fader).
5
stereo switch This switch routes the channel signal to the stereo master
bus (post-EQ, post-pan, post-mute and post-fader).
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Chapter 5: Mono Input Channel
Meter
The meter is especially useful when setting the microphone gain of a channel. Also, as
the meter is post-EQ, it is possible to see the effect that the channel equalisation has
upon the level. It may be necessary to turn the input gain down when excessive EQ is
used to prevent the channel from overloading.
The LEDs represent the following:
•
18 (red): +18dB, overload (peak).
•
12 (yellow): +12dB, high level.
•
0 (green): 0dB, normal level.
•
-18 (green): -18dB, shows that a signal is present.
Note: The meter is post-insert and post-EQ, but pre-fader and pre-mute.
Routing
The signal can be routed to any of the four group buses using the group switches.
Group routing is post-EQ, post-mute, post-fader and post-pan (stereo). Each pair of
groups behave as if they were stereo groups. The mono signal is positioned in a stereo
field by the pan control. The left signal is routed to the odd numbered bus and the right
signal to the even numbered bus. Selecting groups 1 and 2 with pan hard left will result
in the signal being routed to group 1 only. Similarly, with pan hard right the signal will
be sent only to group 2.
This selection, however, is on a channel-by-channel basis and so some may be assigned
to the groups as mono or as stereo, depending upon the desired usage. For example:
Application
Configuration
Reason
Submix
Stereo
Submix of drum kit.
Submix
Mono
Vocals with inserted compressor
(multiple vocals feed the same
compressor).
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Chapter 6: Multifunction Input Channel
This chapter details the multifunction input channels of the VeniceU. It describes the
sections of each multifunction channel on the control surface and the related connectors
on the rear panel.
Multifunction input channels on the control surface
All types of VeniceU have four multifunction input channels.
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Chapter 6: Multifunction Input Channel
Overview of the multifunction input channel
The VeniceU multifunction channel (shown right) is equipped with an
XLR input, which are used for mic/line level signals up to +32dBu. Two
1/4” TRS Jack sockets provide inputs for line level signals that require
protection against accidental 48-volt connection. The line inputs accept
signals up to +28dBu and have +20dB of gain available.
Item
Section
1
Mic input gain (see “Gain (mic inputs)” on page 50).
2
USB (see “USB” on page 50).
3
Stereo line input gain (see “Stereo line inputs” on page 51).
4
EQ (see “EQ” on page 51).
5
Monitors and auxes (see “Monitors” on page 52 and “Auxes”
on page 52).
6
Balance, mute and solo (see “Balance, mute and solo” on
page 53 and “Fader, routing and meter” on page 54).
7
Fader, meter and groups (see “Fader, routing and meter” on
page 54).
1
2
3
4
5
6
7
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Rear panel
Rear panel
The VeniceU channel inputs are located on the rear panel of the console.
1
2
3
4
5
Multifunction input channel connectors
Item
Description
1
insert Insert point on a single 1/4” TRS Jack socket. This is unbalanced
and requires a conventionally-wired insert lead.
2
direct out
3
line in l (mono)
socket.
4
line in r
5
mic
Direct output on a single, balanced 1/4” TRS Jack socket.
Line in (stereo left or mono) on a single 1/4” TRS Jack
Line in (stereo right) on a single 1/4” TRS Jack socket.
Mic input on a single, balanced XLR female chassis connector.
Note: The insert and direct out are sourced from the mic input only.
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Chapter 6: Multifunction Input Channel
Gain (mic inputs)
This section has the same functionality as the gain section of the mono input channels
except for the following. For full details, see “Gain” on page 40.
•
20dB pad switch On multifunction input channels the pad switch has no effect
upon the left and right line levels. Overloads are indicated on the meter by the red
LED at the top (see “Fader, routing and meter” on page 54).
•
80Hz switch On multifunction channels, this switch has no effect upon the left and
right line inputs.
•
mic Ø switch On multifunction channels, this microphone phase switch causes a
180-degree phase change (with respect to the input signal), such that the channel
signal will have opposite polarity to the input signal. This switch has no effect upon
the left and right line inputs.
Mic gain section of the multifunction input channels
USB
The usb in switch in each multifunction input channel lets you select the channel input
source as USB (digital).
USB section of the multifunction input channels
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Stereo line inputs
Stereo line inputs
The stereo line gain control knob adjusts level of the stereo line input signal, which is
continuously variable from 4 (infinity/off) to +20dB with a centre detent at 0dB, thus
allowing low level line signals to be trimmed to obtain the optimal signal level.
Stereo line gain control of the multifunction input channels
EQ
Each multifunction input channel of the VeniceU has a four-band, fixed EQ (treble and
bass shelving EQ and hi and lo mid EQ stages), allowing tonal control over the input
signal.
1
2
3
4
5
EQ section of the multifunction input channels
Item
Description
1
Treble control knob The treble shelving EQ gain is continuously variable
from -15dB to +15dB, with the shelf frequency set to 12kHz.
2
Hi mid control knob The hi mid gain is continuously variable from -15dB
to +15dB around 3kHz.
3
Lo mid control knob The lo mid gain is continuously variable from -15dB
to +15dB around 300Hz.
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Chapter 6: Multifunction Input Channel
Item
Description
4
Bass control knob The bass shelving EQ gain is continuously variable
from -15dB to +15dB, with the shelf frequency set to 75Hz.
5
EQ switch and red LED The EQ switch enables the EQ. With EQ
disabled, adjustment of the EQ controls has no effect. This can be used to
compare the sound with and without EQ. The eq LED illuminates to show
that EQ is enabled.
Monitors
The monitor sends of the multifunction input channels have similar functionality to
those of the mono input channels. For more information, see “Monitors” on page 42.
Note: Stereo left and right channel signals are summed into a mono signal to be routed
to the monitor buses by the channel monitor sends.
Monitor section of the multifunction input channels
Auxes
The aux sends of the multifunction input channels have similar functionality to those of
the mono input channels. For more information, see “Auxes” on page 43.
Note: Stereo left and right channel signals are summed into a mono signal to be routed
to the aux buses by the channel aux sends.
Aux sections of the multifunction input channels
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Balance, mute and solo
Balance, mute and solo
The VeniceU has balance, mute and solo on every multifunction input channel.
1
2
3
Balance, mute and solo sections of the multifunction input channels
Item
Description
1
bal control knob This stereo line input balance control allows continuous
reciprocal adjustment of the channel’s stereo image. It allows the user to
determine the relative output power to each left and right output. At all
points this control retains constant power. The fully left and fully right
positions are +3dB and the centre position is 0dB.
However, when using the mic input the balance controls acts as a pan. The
fully left and fully right positions are 0dB and the centre position is -3dB.
2
MUTE switch and red LED The MUTE switch mutes the channel signal.
The mute LED illuminates to show when the MUTE switch is on.
3
SOLO switch and yellow LED With solo enabled, the channel signal is
sent to the after-fade listen (AFL) stereo and pre-fade listen (PFL) mono
buses. The left and right local monitor outputs can be used, for example,
when operating from within a booth to hear selected solos and not the
whole mix. The solo LED illuminates to show when a solo is on.
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Chapter 6: Multifunction Input Channel
Fader, routing and meter
The VeniceU fader section has the following functions.
1
2
3
4
5
Fader section of the multifunction input channels
Item
Description
1
LED meter These LEDs comprise the multifunction input channel meter,
which lets you monitor the input signal without having to use the PFL. The
meter will display the higher of the two signals (left or right). The red +18
LED will also show any overload activity on the USB.
Note: The LED meter is post-insert and post-EQ, but pre-fader and
pre-mute.
2
Fader This channel fader allows for continuous adjustment of the channel
level from 4 (infinity/off) to +10dB. At 0dB, the output of the channel to
the stereo, mono and group buses will be at unity, that is, no adjustment in
level from the input.
3
Group switches Two latching switches route its channel signal to any of
the four groups. Group sends are post-EQ, post-mute, post-fader and
post-balance.
4
mono switch This switch routes the channel signal to the mono master
bus (post-EQ and post-fader).
5
stereo switch Routes the channel signals to the stereo master buses
(post-EQ, post-balance, post-mute and post-fader).
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Meter
The meter is especially useful when setting the microphone gain of a channel. Also, as
the meter is post-EQ, it is possible to see the effect that the channel equalisation has
upon the level. It may be necessary to turn the input gain down when excessive EQ is
used to prevent the channel from overloading.
The LEDs represent the following:
•
18 (red): +18dB, overload (peak)
•
12 (yellow): +12dB, high level
•
0 (green): 0dB, normal level
•
-18 (green): -18dB, shows signal is present
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Chapter 6: Multifunction Input Channel
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Chapter 7: Output Section
This chapter deals with the output section of the VeniceU. It describes the control
surface and the related connectors on the rear panel.
Output section of the control surface
The output section comprises the following main areas:
•
Group (see “Groups” on page 61)
•
Matrix (see “Matrices” on page 64)
•
Stereo return (see “Stereo returns” on page 66)
•
Monitor (see “Monitors” on page 67)
•
Aux (see “Auxes” on page 68)
•
Mono master (see “Master outputs (mono and stereo)” on page 69)
•
Stereo master (see “Master outputs (mono and stereo)” on page 69)
•
Talkback (see “Talkback” on page 71)
•
Playback (to masters) (see “Playback and recording” on page 72)
•
Local monitor (see “Local monitor and phones” on page 73)
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Chapter 7: Output Section
Rear panel
The main outputs of the VeniceU are located on the rear of the console.
Output connections on rear panel
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Overview of the outputs section
Overview of the outputs section
The outputs section comprises
the following main areas.
Item
Description
1
See “Matrices” on page 64.
2
See “Master outputs (mono and
stereo)” on page 69.
3
See “Talkback” on page 71.
4
See “Playback and recording” on
page 72.
5
See “Local monitor and phones”
on page 73.
6
See “Master outputs (mono and
stereo)” on page 69.
7
Master faders.
8
Four blue faders, which adjust to
their current assignment (for
example, groups).
9
See “Groups” on page 61.
10
See “Auxes” on page 68.
11
See “Monitors” on page 67.
12
See “Stereo returns” on page 66.
1
2
12
3
11
4
5
10
6
9
8
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Chapter 7: Output Section
Output module notes
Before looking at the function of the output section of the console, it is essential that
you are comfortable with a few of the console’s features that affect groups, matrices
and auxes. Rather than discuss these features in each section (although they will be
repeated there), an understanding of their function in a more general context is
desirable.
Group-aux changeover
The VeniceU can be used as a front of house (FOH) console or
monitor console. Monitor engineers tend to prefer the output
faders on their console to operate the aux outputs (for monitors),
whereas FOH engineers would rather use their output faders for
groups (either for sub mixes or alternative outputs).
To achieve this flexibility, the VeniceU has an aux c/o
(aux/group changeover) switch, so that each output can be
individually ‘changed over’ so that the group output path
becomes that of the aux output and vice versa.
The VeniceU has been developed with real world sound engineers
in mind. The real flexibility of the VeniceU is in the speed in
which the changeover can be made and also the ability to create
a console that can be used for FOH and monitors in a smaller venue where you still
need monitors, but don’t have space for a monitor engineer or console.
Pressing the aux c/o switch will connect the aux bus to the group insert, group mute,
group meter, group solo, group fader, group pan and finally the group output XLR.
The group bus is connected to the aux output pot and to the aux output XLR.
This routing flexibility is available on each of the four group/aux buses.
>> To operate the aux c/o switch
We recommend using a pointed (but not sharp) object, such as a ballpoint pen.
Meter changeover
You can meter the monitor (1 and 2) or matrix (1 and
2) outputs, rather than the group outputs. For
example, if using the matrix outputs to drive delay
speakers, it may be desirable to monitor those
outputs.
Note: If you have used the group aux c/o switch,
the group meters will show the aux outputs.
The monitor and matrix switches send the relevant
signal to the meter array.
Note: Meters are post-fader and post-mute.
For more information on VeniceU signal routing, see Appendix A "Functional
Block Diagrams" on page 75.
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Groups
Groups
Each of the four group buses has an output and an insert.
1
2
Group connectors on rear panel
Item
Description
1
Group insert sockets
TRS Jack socket.
2
Group output sockets
connector.
Each group has an insert point via a single 1/4”
Each group has an output via a male XLR chassis
USB output is available for the groups by the overriding multifunction input channels.
For more information, see “USB” on page 62.
Each group output has fader level adjustment and metering.
9
5
6
7
1
2
8
3
4
Group output sections on the control surface
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Chapter 7: Output Section
Item
Description
1
Meter LEDs These LEDs comprise the group meter, which lets you
monitor the input signal without having to use the PFL.
2
Fader The group fader allows for continuous adjustment of the channel
level from 4 (infinity/off) to +10dB.
3
mono switch This switch routes the channel signal to the mono bus
(post-EQ, post-mute and post-fader).
4
stereo switch Routes the channel signal to the stereo master bus
(post-EQ, post-pan, post-mute and post-fader).
5
usb c/o switch
6
pan control knob The pan control allows the group channel signal to be
positioned in a stereo field when routed to the stereo master bus. The pan
control allows continuous adjustment of the image from hard left, to hard
right with a centre detent, and obeys a constant power law (that is, -3dB at
the centre).
7
MUTE switch and red LED The MUTE switch mutes the channel signal.
Note that the signal will still be sent to the insert point. The mute LED
illuminates to show that the mute is on.
8
SOLO switch and yellow LED Group output solo has the same function
as on the mono input channels (see “Pan, mute and solo” on page 44).
9
aux c/o switch
Activates the USB for the groups.
See “Group-aux changeover” on page 60.
USB
The usb section on the rear panel of the console lets you connect a PC.
USB section on the rear panel
On the control surface, a usb in switch in the multifunction input channels lets you
activate USB on those channels.
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USB
1
2
3
USB sections on the control surface
Item
Description
1
usb in switch This latching switch inserts the USB return to the channel,
muting the mic and line inputs.
2
usb c/o
3
override masters to usb with matrix switch This latching switch
overrides the stereo master USB output with the matrix 1-2 output.
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This latching switch flips the aux USB output to group output.
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Chapter 7: Output Section
Matrices
There is an output connector and insert connector on the rear panel for both matrix
outputs.
Two matrix inserts and two matrix outputs on the rear panel
USB output is available for the matrix outputs by overriding the relevant multifunction
input channel 29-30. For more information, see “USB” on page 62.
The VeniceU provides another two outputs from the console, which can be contributions
from a combination of the console’s other outputs. The matrix signal can be made from
a combination of the group bus signals and mono, left and right master signals. They
can be used to drive additional speaker zones or as effects sends from the groups (like
the auxes from inputs).
1
2
3
4
5
6
7
8
matrix output section on the control surface
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Matrices
Item
Description
1
group 1 to group 4 control knobs Each of the groups (1-4) has its own
individual matrix send level, which is continuously variable from
4 (infinity/off) to +6dB. Unity (0dB) is also marked on the scale, allowing
the signal to be routed to the matrix without any attenuation or gain.
Alternatively, the auxiliaries can be routed to the matrix by pressing the
aux c/o switch (see “Group-aux changeover” on page 60). This is
especially useful for generating additional monitor mixes or re-routing
existing monitor mixes (for example, if artists are moving around to other
parts of the stage).
2
mono master control knobs The master mono signal sent to the matrix
is continuously variable from 4 (infinity/off) to +6dB. Unity (0dB) is also
marked on the scale, allowing the signal to be routed to the matrix without
any attenuation or gain.
3
stereo master control knobs The single stereo master control knob on
each matrix comprises a ‘summed’ signal of the left and right master
channels.
4
split stereo master source left/right switch This switch makes matrix
1 stereo master contribution ‘left’ and matrix 2 stereo master contribution
‘right’, rather than the summed default.
5
override masters to usb with matrix This latching switch overrides the
stereo master USB output matrix 1-2 output.
6
matrix 1 and matrix 2 control knobs
from 4 (infinity/off) to +10dB.
7
MUTE switch and red LED The MUTE switch mutes the matrix output.
The mute LED illuminates to show that the mute is on.
8
SOLO switch and yellow LED The SOLO switch routes the matrix signal
to the mono PFL bus and stereo AFL buses. The solo LED illuminates to
show when solo is on.
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Adjust the matrix output levels
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Chapter 7: Output Section
Stereo returns
There are two stereo returns that route to masters, certain groups and the two monitor
buses.
Stereo returns 1 and 2 on the rear panel. Each return has left and right TRS 1/4” TRS
Jack sockets.
1
2
2
4
5
6
stereo returns section on the control surface
Item
Description
1
return 1 and return 2 control knobs
line gain from 4 (infinity/off) to +20dB.
2
MUTE switch and red LED These switches mute the stereo returns. The
LEDs illuminate to show that the mute is on.
3
SOLO switch and yellow LED These switches route the stereo return
signal to the mono PFL bus and stereo AFL buses. The LEDs illuminate to
show that the solo is on.
4
group 1-2 and group 3-4 switches Routes the stereo return channels
to groups 1 and 2 (return 1) or 3 and 4 (return 2).
5
stereo master switch
channel.
6
monitor 1 and monitor 2 control knobs Adjusts the contribution to the
monitor 1 and 2 buses (pre-fade or post-fade mono sum) from
4 (infinity/off) to +6dB.
These control knobs adjust the
Routes each stereo return to the stereo master
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Monitors
Monitors
There is an output connector and insert connector on the rear panel for both monitor
bus outputs.
Two monitor inserts and two monitor outputs on rear panel
1
2
3
4
Monitor channels (1 and 2)
Item
Description
1
pre switch
2
monitor control knob This output level control gives continuous
adjustment of the monitor output signal from +10dB to 4 (infinity/off).
3
MUTE switch and red LED The MUTE switch mutes the monitor send
output signal. The mute LED illuminates to show that the mute is on.
4
SOLO switch and yellow LED The SOLO switch routes the monitor send
signal to the mono PFL bus and stereo AFL buses. When the SOLO switch is
on, the master meters are automatically used for solo metering. The solo
LED illuminates to show when solo is on.
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This is the bus master pre-fader switch.
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Chapter 7: Output Section
Auxes
There are four independent aux outputs on the rear panel.
Four aux XLR outputs on the rear panel
Each aux output is controlled by a discrete section on the control surface.
1
2
3
4
5
Auxes on the control surface
Item
Description
1
Control knob Adjusts the aux master level. The output level of the aux is
continuously variable from 4 (infinity/off) to +10dB.
2
MUTE switch and red LED The MUTE switch mutes the aux send signal
at every point after the master send level. The LED illuminates to show
when the mute is on.
3
SOLO switch and yellow LED The SOLO switch routes the aux send
signal to the mono PFL bus and stereo AFL buses. The solo LED illuminates
to show when solo is on.
4
pre switch This is the aux global control bus master pre-fader switch,
which determines whether the aux contribution from the input channel is
pre-fader or post-fader.
5
aux c/o switch
See “Group-aux changeover” on page 60
Pre-fade aux 1-4 sends are sourced after the channel insert, mute and EQ, but before
the channel fader. As a result, the actual level sent to the aux bus is proportional to the
aux send control only.
Post-fade aux sends are sourced after the channel insert, mute, EQ and fader. As a
result, the actual level sent to the aux bus is proportional to the aux send control and
the channel fader.
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Master outputs (mono and stereo)
Table 2: Typical uses of auxiliaries
Application
Pre-/Post-fade
Reason
Stage monitors
Pre-fade (post-EQ)
The level in the monitor stays
constant, so that the engineer can
change the FOH level without
affecting the performer.
Effects sends
Post-fade
The level sent to the effects is
proportional to the fader level, so
the balance between wet
(processed) and dry (unprocessed)
sound stays the same, even when
the channel level is changed.
Mixed recording (for
the artist)
Post-fade (post-EQ)
If the aux is set to unity, the FOH
mix is replicated on the aux
output. This includes EQ, but
excludes pan.
Master outputs (mono and stereo)
There is an output connector and insert connector on the rear panel for each of the
mono, left and right master channels.
Master outputs on the rear panel
USB output is available for the left and right master channels by the overriding the
relevant multifunction input channel. There is no USB output for the mono channel.
For more information, see “USB” on page 62.
The controls shown in this section are directly responsible for the main outputs from the
console.
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Chapter 7: Output Section
2
1
3
5
4
7
6
Master outputs sections on the control surface
Item
Description
1
stereo to mono switch When this switch is on, a sum of the stereo left
and right signals are routed to the mono signal bus (post-mute and
post-fader, and post-insert points).
2
bal control knob Provides fine adjustment of the left and right power
levels, and can be used during set up to check the left and right channels
separately (by panning fully left or right).
3
MUTE switches and red LEDs These MUTE switches mute the stereo/
mono signals pre-fader. Each red LED illuminates when its mute is on.
4
SOLO switches and yellow LEDs The SOLO switches route the stereo/
mono signal to the PFL mono and AFL stereo buses. The LED for each solo
switch illuminates when its solo is on. Master solo will be overridden by any
other channel/mix solos.
5
Faders These master output faders adjust the output levels, which are
continuously variable from 4 (infinity/off) to +10dB.
6
solo LED This yellow LED illuminates to show when the meters in the
master meters section are functioning as solo meters. The solo bus levels
(afl L, afl R and pfl) are shown on the solo meters. The solo meters are premonitor or phones output mute and level, and are unaffected by changes in
the headphone level or the level sent to the local monitor outputs.
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Talkback
Talkback
The VeniceU provides a talkback mic that can be routed to a number of the console’s
outputs.
5
1
2
3
4
Talk mic section on the control surface
Item
Description
1
on switch and green LED When on (button fully in), the talk mic input is
enabled and routed to the talk bus, in which case both local monitor outputs
are attenuated by 20dB to help prevent feedback. The green LED
illuminates to show that the talk mic input is enabled.
2
aux 1-4 switch
all aux buses.
3
stereo master switch This is a routing button that routes the talk bus
signal to the stereo master buses.
4
mon 1-2 switch This is a routing button that routes the talk bus signal to
the monitor 1 or monitor 2 bus.
5
gain control knob Adjusts the gain of the talk mic, which is continuously
variable from +10dB to +60dB.
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This is a routing button that routes the talk bus signal to
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Chapter 7: Output Section
Playback and recording
The following four connectors on the rear panel provide discrete analogue inputs and
outputs for audio playback and recording, respectively.
Playback/record sockets on the rear panel
Playback
The two in (right and left) connectors let you connect an analogue device, such as an
MP3 device or tape recorder, to play back recorded audio material via the console.
1
2
3
playback to masters section on the control surface
Item
Description
1
playback to masters control knob The level of the input is continuously
variable from 4 (infinity/off) to +10dB (the nominal level is referenced to
-10dB).
2
MUTE switch and red LED The MUTE switch mutes the input signal.
The LED illuminates to show when the mute is on.
3
SOLO switch and yellow LED The SOLO switch routes the input signal
to the mono PFL bus and stereo AFL buses. The solo LED illuminates to
show when solo is on.
Recording
The two out (right and left) connectors are recording outputs. They are routed via the
stereo bus output and operate at a nominal -10dB. These outputs provide a direct
output from the console that is post-everything, including mute.
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Local monitor and phones
Local monitor and phones
There are two local monitor outputs on the rear panel for providing a signal for monitor
speakers.
Local monitor outputs on the rear panel
A local monitor section on the control surface lets you connect headphones for local
monitoring and adjust their signal level, and also the signal level of the local monitor
outputs.
6
1
5
2
4
3
Local monitor section on the control surface and the position of the addition
headphones socket on the front panel of the console
Item
Description
1
phones control knob Adjusts the headphones level, which is
continuously variable from 4 (infinity/off) to +10dB.
2
MUTE switch and red LED The MUTE switch mutes the headphone
signal. The LED is illuminated when the switch is on.
3
Output socket The local monitor section has a 1/4” TRS Jack socket for
headphones. There is an additional socket under the armrest of the
console.
4
pfl switch and yellow LED When this solo switch is on (LED illuminated),
the local monitor and headphones signal is sourced from the PFL mono
signal, rather than the AFL stereo default.
5
MUTE switch and red LED The MUTE switch mutes the local monitor
outputs. The LED illuminates when the switch is on.
6
local control knob Adjusts the local level, which is continuously variable
from 4 (infinity/off) to +10dB.
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Chapter 7: Output Section
Lamps
There are sockets towards the top of the console’s rear panel for connecting 12V desk
lamps. They accept 4-pin female XLR connectors. The power rating of 5W is the
maximum rating per output and must not be exceeded.
Position of the lamp sockets on the VeniceUs
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Appendix A: Functional Block
Diagrams
This chapter contains the VeniceU signal path diagrams.
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Appendix A: Functional Block Diagrams
Mono input module
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Mono input module
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Appendix A: Functional Block Diagrams
Stereo input module
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Stereo input module
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Appendix A: Functional Block Diagrams
Master and monitor modules
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Master and monitor modules
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Appendix A: Functional Block Diagrams
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Appendix B: Technical Specification
This appendix provides the full technical specification for the VeniceU series of mixing
consoles.
Due to a policy of continual improvement, Midas reserves the right to alter the function
or specification at any time without notice.
Table 3: VeniceU technical specifications
Item
U16
U24
U32
Inputs (total)
Mono mic and line inputs
(with inserts)
Stereo inputs (line)
Stereo returns
Stereo playback input
26
12
34
20
42
28
8
4
2
8
4
2
8
4
2
Buses
Groups
Monitors
Auxes
Masters
Matrices
Solos
18
4
2
4
3
2
3
18
4
2
4
3
2
3
18
4
2
4
3
2
3
4
2
4
2
3
4
2
4
2
3
4
2
4
2
3
Phono
Balanced 1/4” TRS Jack
2
12
2
20
2
28
Balanced 1/4” TRS Jack
2 XLR (balanced)
2
2
2
2
2
2
Switching
100 to 240
50 to 60
150W
Switching
100 to 240
50 to 60
180W
Switching
100 to 240
50 to 60
200W
150W
180W
200W
1
2
2
Included
Included
Included
Outputs
Groups (with inserts)
Monitors (with inserts)
Auxes
Matrices (with inserts)
Masters — left, right and
mono (with inserts)
Stereo record output
Direct outputs (mono
and stereo input
channels)
Stereo headphones
Local monitors
Details
XLR
XLR
XLR
XLR
XLR
(balanced)
(balanced)
(balanced)
(balanced)
(balanced)
Internal power supply
Type
Voltage (VAC ±10%)
Frequency (Hz)
Consumption (W) at
115V
Consumption (W) at
230V
Additional features
Connector for desk lamps
Accessories
Dust cover
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Appendix B: Technical Specification
Table 4: VeniceU performance specifications
Input impedance
Mic
Line
2k balanced
10k balanced
Input gain
Mic
Line level inputs
Continuously variable from
10dB to 60dB
Continuously variable from
0dB to 50dB
Continuously variable from
minus infinity to +20dB
0dB
Maximum input level
Mic
Mic + pad
Line mono channel
Line mono channel + pad
Line stereo channel
+11dBu
+31dBu
+21dBu
+41dBu
+26dBu
CMR at 100Hz
Mic (gain +40dB)
Typically -80dB
CMR at 1kHz
Mic (gain +40dB)
Mic + pad (gain +40dB)
Line mono channel (0dB)
Line stereo channel (0dB)
Line mono channel +
pad (0dB)
Typically
Typically
Typically
Typically
Typically
Frequency response
Mic to mix (gain +60dB)
0dB to -1dB
Noise (20Hz to 20kHz)
Mic EIN at +60dB gain (mono
channel)
Mic EIN at +60dB gain (stereo
channel)
Mic EIN at +40dB gain (mono
channel)
Mic EIN at +40dB gain (stereo
channel)
0dB line to direct output
(mono)
-128dBu
USB digital audio
Sampling frequency
Bit rate
Dynamic range (20Hz to
20kHz)
48kHz or 44.1kHz
24-bit only
A-D 109dB unweighted, 112dB
A weighted
D-A 107dB unweighted, 110dB
A weighted
System noise (20Hz to
20kHz)
Summing noise (16 channel
routed with faders down)
Line to mix noise (16 channels
routed at 0dB, pan centre)
-90dBu
Distortion at 1kHz
Mic to mix (0dB)
0.03%
Crosstalk at 1kHz
Channel to channel
Mix to mix
Channel to mix
Fader attenuation
<
<
<
>
Output impedance
All line outputs
Headphones
50 ohms balanced source
To drive 32 ohms
Maximum output level
Line outputs (into 600R)
Headphones (into 50R)
+21dBu
+18dBu (750mW)
Line mono channel
Line stereo channel
80dB
70dB
70dB
-50dB
70dB
-128dBu
-125dBu
-125dBu
-97dBu
-86dBu
-90dB
-90dB
-90dB
90dB
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Dimensions
Nominal signal level
Mic
Line
-60dBu to +10dBu
0dBu
Equaliser mono channel
Treble shelf
Treble frequency
Hi mid
Hi mid frequency
Hi mid bandwidth
Lo mid bandwidth
Lo mid
Lo mid frequency
Bass shelf
Bass frequency
15dB boost/cut
2kHz to 20kHz
15dB boost/cut
400Hz to 8kHz
Fixed at 1 Octave
Fixed at 1 Octave
15dB boost/cut
100Hz to 2kHz
15dB boost/cut
20Hz to 200Hz
Equaliser stereo channel
Treble shelf
15dB boost/cut control
12kHz
15dB boost/cut control
3kHz (1.4 Oct)
15dB boost/cut control
300Hz (1.4 Oct)
15dB boost/cut control
75Hz
Hi mid bell
Lo mid bell
Bass shelf
at
at
at
at
High pass filter
High pass slope
High pass filter
12dB/Octave
80Hz
EQ
Based on classic XL3 (undershoot curvatures and frequencies)
Dimensions
This section gives details of the external dimensions of the VeniceU series consoles.
Table 5: VeniceU technical specifications
Item
U16
U24
U32
Size (mm/inch)
Width
Depth
Height (without feet)
552/21.7
578/22.7
246/9.7
760/29.9
578/22.7
210/8.3
960/37.8
578/22.7
210/8.3
Weight (kg/lb)
Net
Shipping
16.0/35.3
17.0/37.5
20.0/44.1
21.5/47.4
24.0/52.9
26.0/57.3
In the following diagrams dimensions are in millimetres, with the equivalent in inches
enclosed in brackets.
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Appendix B: Technical Specification
528 (20.8”)
263 (10.4”)
20°
VeniceU16 = 552 (21.7”)
VeniceU24 = 760 (29.9”)
VeniceU32 = 960 (37.8”)
89 (3.5”)
246 (9.7”)
578 (22.7”)
External dimensions of the U16, U24 and U32 consoles. Dimensions are in millimetres (inches).
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Appendix C: Application Notes
This appendix provides application notes as a guide to help you with VeniceU console
operation. With its flexible routing and functionality, the VeniceU was designed with
real-world sound engineers in mind, working in the real world. So, for engineers that
haven’t got a great deal of experience in live sound engineering, the following
subsections may provide a few helpful guidelines.
Gain
The VeniceU has two types of input channel — mono and multifunction — both of which
also have microphone inputs. Gain is provided on these channels to allow the operator
to obtain the optimal signal for the system:
•
Microphone gain — range is +10dB to +60dB (-10dB to +40dB with pad switch
enabled).
•
Mono channel line gain — range is 0dB to +50dB (-20dB to 30dB with pad switch
enabled).
•
Stereo channel line gain — range is -4 (minus infinity) to +20dB.
Each channel of the VeniceU includes an LED meter, which indicates the channel level
(measured after the channel insert and EQ but before the channel fader). With the
insert and EQ disabled, the meter shows the level at the input in the following four
stages:
•
-18dB: signal present
•
0dB: normal operating level
•
+12dB: high signal level
•
+18dB: 3dB before channel overload (clipping)
The input gain of the channel can be used to obtain the best operating level for the
console. Too small a signal level (too little gain) and the best signal to noise ratio will
not be achieved; too high a signal level (too much gain) and there is the chance of
overloading the channel, causing distortion.
Clearly, the gain should be positioned between these two points to gain an optimal
signal to noise ratio without overloading the channel. The ideal level for input channels
would be around +6dB with occasional illumination of +12dB.
Headroom
A channel signal is only permitted to swing high and low by an amount fixed by the
power supply. If the maximum output of the VeniceU channel strip is +21dBu
(0dBu = 0.775 volts RMS) then imagine the following situation:
Headroom is the amount of spare ‘swing’ available to the system. If 9dB headroom was
desired at all times, a maximum level of +12dB is required to retain the headroom.
To prevent overload the gain must be set to a point that even the highest output from
the microphone during sound check has some headroom left to prevent any surprises
during the show!
The console’s buses (that is, the left and right main buses) are the point where all
channel signals are summed together. In normal operation, it is unlikely that all
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Appendix C: Application Notes
channels will receive the same signal at the same time so, typically, when 16 channels
are summed together a gain of around 5dB to 8dB will be seen. It is important to leave
some headroom in the summing amplifiers so that they do not overload, should the
sum exceed the maximum level.
The effect of EQ
Channel equalisation should be used with care. Boosting or cutting equaliser bands can
make monitoring your actual input level very difficult. Excessive boosting of EQ (+15dB
is available on each band) will have the same effect as applying more gain to the input,
taking up valuable headroom. Consider backing off the channel gain when using large
amounts of boost (if you have to use large amounts of boost) to retain a sensible level
at the output.
Excessive EQ cut can have a similarly undesirable effect. If a large amount of signal is
cut in the equaliser section, gain may be used to ‘make up’ the level lost in the
equaliser. However, the input pre-amplifier still has the same amount of available
headroom. If gain, added to ‘make up’ the loss in the equaliser, exceeds the maximum
level into the microphone pre-amp then the channel won’t appear to be overloaded, but
the microphone pre-amp will. Turning off the equaliser will reveal the true story,
whereby the microphone pre-amp may be overloaded. It is worth considering whether
such large amounts of EQ cut is really required, or whether it is being used rather more
as a volume control (in which case the input gain could be set to a normal operating
level and the output adjusted on the channel fader).
You can monitor the level pre-EQ and post-EQ using the LED meter by switching
the EQ in and out during sound check.
Dynamic processing
When working with signals that are constantly at a high level the channel gain can
accommodate these signals with ease. When working with varying signals, such as
from a vocalist, it may be desirable to reduce the dynamic range of the signal so that
the loud parts aren’t so loud (and don’t overload your channel input) and the quiet bits
aren’t too quiet (so the signal to noise ratio would be increased).
Limiters and compressors have a similar function, which is to reduce the dynamic range
of a signal. The means by which they do this won’t be discussed here, but these
devices have the ability to reduce the level of loud signals automatically and also raise
the gain to ‘make up’ the level as desired. The channel gain can now be set with
adequate headroom to accommodate both loud and quiet signals, and the compressor
can reduce the dynamic range and ‘make up’ any reduction in level. By inserting such a
device into the channel’s insert point you have the ability to remove the guesswork
from setting your system gain.
However, there are still sources of potential problems. The VeniceU is able to operate
at levels up to +21dBu on both the insert send and return. If the maximum input level
of the compressor was less than +21dBu, it is possible to overload the input of the
compressor. The only way to resolve this situation would be to drop the channel input
gain so that the input level of the compressor was not being overloaded. However,
please note that the level returned from the compressor would also be lower
than +21dBu and excessive use of the compressor ‘make up’ gain would
overload the output of the compressor!
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Unity Gain
Unity Gain
Unity gain is a gain of 1, that is, no gain or attenuation is applied to a signal.
If a signal entered a mono line level input of the VeniceU at 0dBu and the gain was set
to +10dB (an internal 10dB attenuation sets the net gain to 0dB), then the signal was
routed to each output at 0dB, the channel fader was set to 0dB and each output fader
was set to 0dB, the output should be 0dBu (or unity). Some console manufacturers
mark the 0dB level of their faders and pots ‘U’.
Simple. But that’s just one signal. If we have two 0dBu signals entering the VeniceU
(assuming they are coherent, that is, the same level and phase) to be summed in the
buses, the output would no longer be 0dBu.
Simply,
0dBu = 0.775 volts
0.775 volts + 0.775 volts = 1.55 volts
1.55 volts is 0.775 volts +6dB (or a gain of 2)
To retain an output of 0dBu (our previous unity level) each input must be reduced.
0.775 volts / 2 = 0.3875 volts
0.3875 volts is 0.775 volts -6dB (or a gain of 1/2)
So, each fader must be reduced to -6dB to retain the unity gain level of 0dBu on the
console output. When using four inputs at 0dBu, the faders must be reduced to -12dB.
Real life signals are not continuous, but the principle is the same. If you have a
sinusoidal input that is nominally 0dBu on all 32 inputs with the channel faders at 0dB,
the output is likely to be well above the 21dBu maximum output of the console and
leave no headroom spare. With real world signals, 32 channels summed together will
give around 6dB to 9dB gain because it is unlikely that all 32 channels will receive the
same signal at the same time. Instead, signals will occur at different times, and there
will be cancellation due to phase and frequency differences.
Signal Processing and Amplifiers
The final links in the system tend to be graphic equalisers, loudspeaker processors and
finally amplifiers and speakers.
Graphic equalisers have the same problems as the VeniceU’s EQ. If excessive boost is
applied to the signal, the graphic equaliser’s output may be overloaded. If the output
of the VeniceU is higher than the maximum input level of the graphic, the input of the
graphic may be overloaded.
Loudspeaker processors have similar problems. If the input level to the processor is too
high, the input may be overloaded and introduce distortion into the outputs (and to the
speakers!). In addition to this, any boost on the processor’s outputs (say you want 3dB
more bass) will cause that output to overload earlier (in this case 3dB before the other
outputs).
Finally, amplifiers can introduce the most interesting results.
An amplifier has a sensitivity. That is, an input signal level that causes the amplifier to
produce its maximum output level. For many amps this is 0dBu (0.775 volts RMS),
while others use 0dBV (1 volt RMS) and others use different levels. Beyond this
sensitivity, the amplifier’s output will not be able to produce any more power and ‘CLIP’
(usually indicated by some serious looking red lights). Sending +21dBu level from the
VeniceU will clip the output of most amplifiers causing damage to your loudspeaker
system.
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Appendix C: Application Notes
There are a number of solutions to this problem:
•
Reduce the amplifier’s input attenuators to a level where the amplifier and
console clip at the same point.
For example, the input sensitivity is 0dBu, setting the input attenuator on the
amplifier to -21dB would mean that the console would clip at the same time as the
amplifier. So, operating the console sensibly the amplifier should never be clipped.
The console LED meters will also accurately show the available headroom left in the
entire system.
-21dB may not be a sensible level to set as many operators choose not to run the
output of the console so high. That is personal choice.
•
Run the output of the console at a level below 0dBu.
This solution means that you won’t get full benefit of the console, and may suffer a
reduced signal to noise ratio, especially when running over long signal cables. But
the amplifiers should be saved from clipping.
As with many things in the audio world, use your ears. If something sounds distorted,
do the following:
Problem
Action
Input gain is too high
Lower input gain
EQ has too much boost
Disable EQ
EQ has too much cut and has a high
input gain
Disable EQ
There is too high a level entering the
inserted processor
Disable insert
The loudspeaker controller or amplifiers
are clipping
Check clipping indicators on amplifiers,
etc.
Routing
The flexible routing of the VeniceU allows the console to operate as both a FOH and
monitor console, or as a combination of both. For operators that haven’t got a great
deal of experience, here are a few helpful guidelines.
FOH mode
The group-aux changeover switch on each group (see “Group-aux changeover” on
page 60) should be released (in the off position) so that the group fader controls the
group bus signal.
Uses for groups vary, but include:
•
Submixes Submixes are a common way of saving time (and possibly
embarrassment) when using a large number of microphones at once. For example,
multiple microphones for choirs, drum kits/percussion, orchestras, etc.
The channel to be submixed should be routed to the group and any aux sends ONLY
(that is, not to the master L-M-R). The fader is, as normal, used to set the relative
level between the channels in the submix. The group chosen for the submix should
then be routed to the master L-M-R and panned as required.
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Routing
The submix is now set up. The group level can be used to control the overall level of
the channels (retaining their relative levels), mute the submix output or solo the
submix signal.
Note: Muting the submix is not the same as muting the channels. Aux sends and
other group sends will remain active.
•
Common EQ/processing Often, it is either too expensive or undesirable to apply
processing to each channel individually (for example, compression on a whole choir,
graphic EQ on a number of microphones, etc.). Setting up a submix as above, the
signal is grouped together. Now the desired processor can be inserted into the group
inserts applying the processing to all of the submix channels (in their relative levels).
•
Alternative outputs For example, you were mixing a number of speakers in a
venue and each needed a different level and processing.
Route the desired channels to any group or master output as necessary. Make sure
the group is not routed to the main outputs. The group outputs should be wired into
the necessary amplification and the insert points into any necessary processing (for
example, delay, EQ, etc.).
The levels are now individually controllable.
MON mode
The group-aux changeover switch on each group (see “Group-aux changeover” on
page 60) should be depressed (in the on position) so that the group fader controls the
aux bus signal.
Channel signal should be sent to the aux, as required, and the aux sends should usually
be configured to pre-fader. The console group output sockets should be wired into the
necessary amplification and the insert points into any necessary processing (for
example, EQ, etc.).
The monitor levels are now individually controllable on the group faders.
Dual FOH/MON Mode
The group-aux changeover switch on each group (see “Group-aux changeover” on
page 60) should be depressed (in the on position) so that the group fader controls the
aux bus signal for monitors or released (in the off position) so that the group fader
controls the group bus signal for FOH. The usage in this split mode can be any
combination of the above!
Note: When the group-aux changeover switch is depressed, control over the groups is
performed by the aux controls and hence, and group outputs may still be used.
Submixes could be used by connecting the aux output sockets on the rear of the
console to four unused stereo input channels and routed to the left and right master
buses.
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Appendix C: Application Notes
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Appendix D: Crib Sheets
This appendix provides you with a template each for the mono and multifunction input
channels. These will help you keep a record of your most important settings and make
notes. If necessary, you can make copies of these pages if you need more records.
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Appendix D: Crib Sheets
Mono input
channels
Notes:
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Multifunction input channels
Multifunction input channels
Notes:
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Appendix D: Crib Sheets
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Appendix E: Best Grounding Practice
This appendix gives details of the best grounding practices for the VeniceU console in
order to get the optimum performance out of it.
Safety first
The VeniceU is classified as a class 1 device and as such there is a safety
requirement for the power cable to provide an earth connection to the console.
This connection is bonded to all external metal parts such that in the event of
a failure within the AC power systems it is impossible for any external parts of
the product to become live. When connecting other equipment to the VeniceF
to form an audio system, it is likely that some of these additional devices will
also be class 1, so they will require a safety earth too. For your own safety,
the safety of others and to comply with the law, it is important that none of
these earth connections are tampered with in any way.
Ground loops
When connecting audio signals or data between devices within an audio system, a
signal ground connection must be provided that screens the signals from
electromagnetic interference. This ground connection, combined with the safety earth,
produces a ring of conductors often referred to as a “ground loop”. Typically, this gives
rise to induced currents within the components of the loop, namely the ground
conductors, the chassis of the equipment and the safety earth conductors. This is not
dangerous, but if the grounds are used as a reference for audio signals, as occurs with
unbalanced connections, the ground currents may generate small voltages that corrupt
the signal integrity. The audible results are noise added to the intended signal.
Typically, this sounds like hum (from the power AC voltage), buzzing or whistles (from
power supply diodes or switch mode power supplies), or digital noise (from computers).
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Appendix E: Best Grounding Practice
Audio connection
Loop currents
GEQ (for
example, Square
ONE Graphic)
Midas VeniceU
console
Power
connection
Power distribution
unit (PDU)
Power connection
Ground loop
Noise sources
Audio manufacturers have known about these issues for many years and most
equipment is designed to reduce ground loop generation to the bare minimum or to
minimise the effects. But, as switch mode power supplies and computers become more
common place, the earth/ground environments that audio systems operate in become
more and more contaminated by noise currents from both within the system and from
external sources.
The USB connection on the VeniceU is an example of this. The high speed nature of the
connection necessitates a good screen ground to bond the computer to the VeniceU.
However, if the computer is grounded via its power cable a ground loop will exist that
can inject current into the console chassis and may produce currents or small voltages
that can affect other externally connected equipment. The size of the injected current
will vary from one computer to another, depending on the quality of the grounding and
components used internally, and within its power supply. To eliminate this problem,
computers with an isolated power supply are the best choice.
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Noise sources
Laptop
PC/Mac
USB connection
Broken ground
loop
Isolation
barrier
Midas VeniceU
console
Power supply unit
(PSU) with
internal isolation
barrier
Power
connection
Power distribution
unit (PDU)
Power connection
Isolated USB computer system. Note how the isolation barrier breaks the ground loop.
Laptop
PC/Mac
USB connection
Ground loop
Midas VeniceU
console
Power supply
unit (PSU)
without internal
isolation barrier
Power
connection
Power connection
Power distribution
unit (PDU)
Non-isolated USB computer system. With no isolation barrier, the ground loop is
present.
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Appendix E: Best Grounding Practice
Noise solutions
The grounding on the VeniceU is very robust and often such ground loop induced noises
are negligible, but to get the very best out of your console, and especially out of any
less robust equipment within the overall system, some consideration should be given to
good grounding practice as follows:
•
Power Connect all equipment within the audio system to a power distribution
system with a source that has been set aside for that use alone. This will provide a
degree of isolation from other ground noise inducing apparatus, such as fans,
lighting, etc.
•
Cable runs Plan power cabling as far as is practical so that it follows the same
physical paths as the audio connections. This reduces the area contained within any
ground loops, which will minimise the currents induced from magnetic fields into
their conductors. Similarly, audio cables to and from equipment racks should be
dressed together to reduce loop area — additionally, producing a tidy appearance.
Audio
connection
Large loop area
GEQ (for
example, Square
ONE Graphic)
Midas VeniceU
console
Power
connection
Power
connection
Power distribution
unit (PDU)
Loop area diagram showing a large loop area
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Balanced connections
Audio
connection
GEQ (for
example, Square
ONE Graphic)
Midas VeniceU
console
Small loop area
Power
connection
Power connection
Power distribution
unit (PDU)
Loop area diagram showing a small loop area
Balanced connections
Balanced connections are generally immune to ground loops because the grounded
screen conductor is not used as a reference for the signal conductors. Instead, each
conductor of a balanced connection is a reference for the other, and any induced noise
is rejected because it is common to both conductors. The process of eliminating noise
like this is called common mode rejection (CMR), which is often measured as a ratio
(common mode rejection ratio (CMRR)). CMRR is dependent on the performance of the
sending and receiving circuits at either end of the connection.
Source
Destination
Screen
+
+
-
Chassis
Chassis
Balanced connection diagram
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Appendix E: Best Grounding Practice
Balanced transformers
Active electronic circuits achieve good results, but for ultimate noise rejection,
transformers are needed. Transformers colour the sound especially at low and high
frequencies due to core saturation and impedance rises. They are also expensive, so
they are typically only used as external problem solvers when all else fails.
Screen termination
Sometimes ground loop currents are so strong that even balanced systems can pick up
some noise. This is because the currents manage to find a way into a piece of
equipment’s internal unbalanced circuits. This is easily cured by breaking the screen
ground connection, so that it is only connected at one end of the cable. Opinions as to
which end to break differ within the audio industry but:
•
Induced noises in electronically balanced systems are typically best rejected by input
stages, so breaking the ground there will generally give the best audio performance.
This also allows any common mode AC currents from the output driver to return via
the screen ground to their source rather than finding a longer path through the
power cables, which may give rise to noise or crosstalk elsewhere.
•
Alternately, breaking the screen connection at the send end provides a much more
practical grounding scheme if cables are to be hot plugged. Then any cables that are
plugged first (that is, only) into an input will have a screen and thus will not be a
source of severe electromagnetic interference (which would be the case without the
screen connection).
•
If a transformer is utilised within the balanced connection the best CMRR
performance will be obtained by breaking the screen ground at the transformer end
of the cable.
With long cable runs, sometimes the impedance of the screen conductor is high enough
that disconnecting one end allows some electromagnetic interference through the
screen onto the signal conductors. This is typically audible as stray local radio
transitions, typically at very low levels. If this is a problem, it can be cured by bridging
the break in the screen connection with a capacitor. This improves the screen at high
frequencies, but maintains the isolation that breaks ground loops at lower frequencies.
10nF to 50nF are good values to use and are available in ceramic packages that are
small enough to fit inside connector shells. Some experimentation may be necessary,
especially if multiple cables are bridging two units, because in this case the capacitors
are effectively connected in parallel and their combined value will grow (for example,
32 channels at 50nF will equate to 1,600nF). It is probably better to use 10nF for this
kind of multiple connection, so that the overall value only grows to 160nF.
Source
Destination
Screen
+
+
-
Chassis
Chassis
Screen termination diagram showing screen broken at destination
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Ground referenced connections
Source
Destination
Screen
+
+
-
Chassis
Chassis
Screen termination diagram showing screen broken at source
Ground referenced connections
Many unbalanced signals are passed between pieces of equipment where one of the
devices is balanced and the other is not. By careful wiring using two-core cable with an
overall screen, it is possible to convert this connection so that it operates in a similar
way to a balanced system, with a ground reference that is not corrupted by ground loop
currents in the shield. One conductor carries the signal from the unbalanced device to
the hot connection on the balanced unit, while the other conductor carries the ground
as a reference from the unbalanced device to the cold connection on the balanced unit.
The screen is connected at the unbalanced end only. This referenced connection works
for balanced to unbalanced and vice versa.
Chassis
Chassis
Screen
+
Source
Destination
Screen
+
-
Ground referenced insert wiring diagram. For a typical example of how to wire a
ground referenced insert, see Figure 1 on page 15; the example above shows the
screen connection at the other end because it is more practical, as it reduces the wiring
complexity within the 1/4” TRS Jack connector.
To save space and cost, as is typical for consoles at this point in the market, all inserts
on the VeniceU are unbalanced, with send and return on the same jack. When
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Appendix E: Best Grounding Practice
connecting balanced external processing equipment to the insert points, the connection
method described in this section should be adopted so as to benefit from the CMR of the
external unit.
For an example of how to wire a ground referenced insert, see Figure 2 on page 15.
Unbalanced connections
Ground loops with unbalanced signals are more difficult to deal with, but there are
several good techniques available. Firstly, many sources of unbalanced signals are
battery or class 2 powered devices without a safety earth connection, thus ground loops
are not being generated. These signals can be connected via single conductor cables
with an overall ground shield and should not present any problems.
Signal ground lift
Older processing equipment is often unbalanced, but even if it is a class 1 device, very
often the internal signal ground can be isolated from the safety ground. This is
normally achieved by setting an external "ground lift" switch or breaking an internal
link. Refer to the equipment’s manual and qualified technicians for advice on any such
internal links. If ground isolation is available it should be used so that the screen
ground connection from the insert points on the console provide a reference for all
signals within the inserted unit, eliminating the possibility for induced noise to corrupt
the signal path. Two-core cables should be used with one core carrying the signal and
the other carrying the ground plus an overall screen (also grounded). The screen can
be connected at both ends or, as with balanced systems, it can be broken at one end if
that improves performance. Some experimentation may be needed.
Source
Destination
Screen
Chassis
Earth lift
switch
Chassis
Ground lift connection on destination
Source
Destination
Screen
Earth lift
switch
Chassis
Chassis
Ground lift connection on source
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105
XLR shells
XLR pin 1s should only be used to provide a ground connection for cable screens. The
shell (body) of cable XLRs also need to be connected to ground so they provide a screen
for the terminals, but they should not be wired internally to the pin 1 terminal. Their
ground should be prevented from contact with the panel XLR connector body. This is
particularly important for unbalanced connections where an internal connection from
pin 1 to the connector shell could compromise ground lifting schemes. With this wiring
arrangement, joining XLR cables together to increase the overall length is best avoided,
because the joint will not be properly screened. However, if absolutely necessary it is
unlikely to cause major problems.
Signal ground bonding
If an unbalanced connection is required to external equipment with signal grounds that
cannot be isolated from safety earth it will be difficult to eliminate ground loop currents,
but their effects can usually be reduced. The currents within a ground loop will
generate small voltages in the cables, including the signal grounds. Any voltages that
develop in the signal grounds will appear as noise errors in the audio. If the impedance
of the screen cables is reduced, the voltage developed by the ground loop will also be
reduced. So, if the impedance can be zero there will be no noise. This is difficult to
achieve, but ground bonding the external equipment rack to the chassis of the VeniceU
will have a similar effect and will significantly reduce noise in unbalanced connections
between the two locations.
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Appendix E: Best Grounding Practice
Laptop
PC/Mac
USB connection
Audio connection
Bond
19” rack
Midas VeniceU
console
Power supply
unit (PSU)
without internal
isolation barrier
Power connection
Power
connection
Power connection
Power distribution
unit (PDU)
Diagram showing the bond connection between console and 19” rack
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Appendix F: Modification For
VeniceU16 Rack Mounting
Use only screws that were loosened during modification or such ones that
are contained in the mounting set.
The module is a static-sensitive device. Proper grounding and electrostatic
discharge (ESD) precautions are required before handling the module.
This appendix details the modification required to the VeniceU16 console for rack
mounting.
Electrostatic discharge (ESD) precautions
Observe full electrostatic discharge (ESD) — also known as “anti-static” —
precautions when carrying out procedures in this manual that are
accompanied by the ESD Susceptibility Symbol (shown above). This
caution symbol shows you that ESD damage may be caused to items
unless proper ESD precautions are taken, which include the following practices:
•
Keep the work area free from plastic, vinyl or styrofoam.
•
Wear an anti-static wrist strap.
•
Discharge personal static before handling devices.
•
Ground the work surface.
•
Avoid touching ESD-sensitive devices.
Rack mounting parts
To facilitate the rack mounting modification, the U16 is supplied with two rack mounting
brackets and eight M4 x 10 mm countersunk screws.
Special tools required
For modification you need:
•
Allen key: 5 mm
•
Torx screwdriver/wrench/bit: T10 and T20
Recommended torque settings
We recommend the following torques per screw size:
•
M3 screws = 0.7Nm
•
M4 and M6 screws = 1.6Nm
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Appendix F: Modification For VeniceU16 Rack Mounting
Modification procedure
1
Electrically isolate the U16 console by completely disconnecting it from the
mains. Remove all cables from the console, such as mains, audio, lamp, etc.
2
Remove both side cheeks. Remove one side cheek by removing the five 5 mm
screws (use 5 mm Allen key). Do the same for the other side cheek.
3
On one side of the console, slacken/remove the seven M3 x 6 mm pan head
screws (use a T10 Torx screwdriver/wrench/bit) securing the rear panel. Do the
same for the other side.
These two screws secure the
blanking bracket
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Modification procedure
109
4
At this point the blanking bracket (highlighted in red) is now loose and can be
removed. Turn the unit on its side and place it carefully on a smooth support.
Remove the blanking bracket.
5
At the rear of the console, remove the four M3 x 6 mm pan head screws securing
the rear panel assembly.
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Appendix F: Modification For VeniceU16 Rack Mounting
6
The rear panel assembly (highlighted in green) should now be loose. Rotate the
rear panel assembly so that the connector panel ends up on the underside of the
console. Take great care not to put undue stress on the cabling.
Swivel the rear panel assembly
approximately 110°
A
B
When rotating the rear panel
assembly, be careful not to
put undue strain on the
cabling
C
The underside of the console should
look something like this when the rear
panel assembly has been fully rotated
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Modification procedure
111
7
With the console still resting on its side, secure one end of the rear panel
assembly to the side panel, using five (of the seven) screws that you removed in
step 3.
8
Secure the rear panel assembly using the four screws you removed in step 5.
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Appendix F: Modification For VeniceU16 Rack Mounting
9
Fit the blanking bracket that you removed in step 4 (highlighted in green below)
to the rear of the console.
10
Secure one end of the blanking bracket to the side panel using the remaining two
(of the seven) screws that you removed in Step 3.
11
Turn the console 180 degrees so that it rests on its other side and fit (but do not
tighten) the seven screws that you removed in Step 3. Tighten the screws.
These two
screws secure
the blanking
bracket
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Modification procedure
113
12
Turn the console onto its base and remove the arm rest by removing the four
securing screws at the front.
13
Fit the rack mounting brackets to both sides of the console. Secure a bracket
(highlighted in green below) to one side of the console using four M4 x 10 mm
countersunk screws (use a T20 Torx screwdriver/wrench/bit) supplied. Do the
same for the other side.
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Appendix F: Modification For VeniceU16 Rack Mounting
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Appendix G: Service Information
This appendix give details of how to look after your VeniceU.
Routine maintenance
To help keep your VeniceU unit in good working order and to make sure it gives you
optimum performance, we recommend that you carry out the following about once
every month.
•
Clean the console, as detailed in “Cleaning the console” below.
•
Check controls for freedom of operation. As the controls are ‘self-cleaning’, this
operation will help to prevent them from sticking.
•
Check the functionality of all controls, that is, control knobs, faders, pushbuttons,
LEDs, etc.
•
Check the functionality of the equipment.
Cleaning the console
Switch off the console and electrically isolate it from the mains before cleaning.
Clean the console using a dry, lint-free cloth. Do not use harsh abrasives or solvents.
When cleaning the console, take great care not to damage faders, pushbuttons, etc.
Troubleshooting
If you encounter ground loop problems, see Appendix E "Best Grounding Practice" on
page 97.
Special accessories
To comply with part 15 of the FCC Rules, any special accessories (that is, items that
cannot be readily obtained from multiple retail outlets) supplied with this equipment
must be used with this equipment; do not use any alternatives as they may not fulfil
the RF requirement.
Optional equipment
Unless advised otherwise, optional equipment must only be installed by
service personnel and in accordance with the appropriate assembly and usage
regulations.
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Appendix G: Service Information
Equipment disposal
When this equipment has come to the end of it useful life, its disposal may come under
the DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of
27 January 2003 on waste electrical and electronic equipment (WEEE).
Hazardous substances in WEEE contaminate water, soil and air and ultimately put at
risk our environment and health. The directive aims to minimize the impacts of WEEE
on the environment during their life times and when they become waste.
The WEEE directive addresses the disposal of products when they have reached the end
of their life and contributes to the reduction of wasteful consumption of natural
resources. This will help to reduce pollution, and protect the environment and
ourselves.
If this equipment carries a ‘crossed-out wheelie bin’ (shown left), please
do not dispose of WEEE as unsorted municipal waste but collect and
dispose of in accordance with local WEEE legislation. The horizontal bar
underneath indicates that the product was placed on the EU market after
13th August 2005.
For WEEE disposal; see our website at www.midasconsoles.com for
information.
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FEDERAL COMMUNICATIONS COMMISSION COMPLIANCE
INFORMATION
MUSIC Group Research
UK Limited
VeniceU16/VeniceU24/
VeniceU32
Responsible party name:
MUSIC Group Research UK
Limited
Address:
Klark Industrial Park, Walter Nash
Road, Kidderminster.
Worcestershire. DY11 7HJ.
England.
Phone/Fax No:
Phone: +44 1562 741515
Fax: +44 1562 745371
VeniceU16/VeniceU24/VeniceU32
complies with the FCC rules as mentioned in the following paragraph:
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense.
Important information:
Changes or modifications to the equipment not expressly approved by
MUSIC Group can void the user’s authority to use the equipment.
MUSIC Group IP Limited
118
VeniceU
MUSIC Group IP Limited
Thank you for reading through this Operator Manual.
We hope you found it useful.
Please feel free to send us your comments. Our
contact details and website address can be found at
the front of this document.
© 2013 MUSIC Group IP Limited
Klark Industrial Park, Walter Nash Road,
Kidderminster. Worcestershire. DY11 7HJ. England.
Tel: +44 1562 741515, Fax: +44 1562 745371
Email: mkt.info@music-group.com
Website: www.midasconsoles.com