5.1 Plus technical manual
Broadcast Devices, Inc.
Technical Reference Manual
5.1 + Stereo Monitor Controller
Broadcast Devices, Inc.
2066 E. Main Street
Cortlandt Manor, NY 10567
Tel. (914) 737-5032
Fax. (914) 736-6916
World Wide Web: www.Broadcast-Devices.com
Rev A. 07/09
2
Table of Contents
I. Introduction
3
II. Unpacking
3
III. Installation and Connections
3-7
IV. Features and Operation
4
V. Remote Control and Programming chart
8
VI. Audio Specifications
9
VII. Warranty
10
VIII. Connector Schematic Diagrams
11
3
I. Introduction
The 5.1 + Stereo Monitor Controller is intended for use in professional applications where it is
desired to control 5.1 and stereo mix levels fed to powered monitors. The front panel has VU
meter indication of each input and controls for 5.1 and stereo mix levels. The 5.1 + Stereo
Monitor Controller can be used in professional recording, television or post control room
applications. The 5.1 + Stereo Monitor Controller is designed to provide single potentiometer
control of a 5.1 surround mix and separate potentiometer control of a stereo pair. Each input
accepts +4 dBm and output is a balanced +4 dBm with controls full open. The unit has provision
to remotely mute all channels or do selective stereo pair muting of the surround mix channels or
the separate stereo paired channels. It is often desirable to be able to turn channels on and off
during a mix process. There is also remote provision to provide a group dim control of each
input. It is also possible to disable the front panel controls and use remote potentiometers to
control the 5.1 and stereo mixes.
II. Unpacking and Inspection
Carefully inspect the unit after unpacking and make certain that no damage has occurred
during shipping. If damage is noted, contact the shipper immediately and file a claim for
damages. Each unit is carefully packed and carries full insurance against damage. Inspect the
packing list and make sure that the contents of the package match those described on the
packing list.
III. Installation and Connections
As shipped from the factory, the 5.1 + Stereo Monitor is designed to accept +4 dBm balanced
audio and produces +4 dBm balanced audio outputs. Audio connections are made to the unit is
via two DB-25 connectors. Inputs are connected to the input connector utilizing a standard DB-25
to XLR breakout cable with female XLR connectors utilizing the Tascam® ADAT format. Cables
and/or a single RU breakout panel for this purpose are available from Broadcast Devices, Inc. or
can be purchased from a reseller. Outputs are taken from the “Output” DB-25 connector again
utilizing a standard DB-25 breakout cable with male XLR connectors. Remote control
connections are made via the “Remote” connector. As shipped from the factory the unit has
installed a DB-25 jumper cable from “Remote” to “Front Panel” DB-25 connector. To utilize the
features described below, remove this connector and connect remote control connections as per
the remote control designations described in the remote control connections section of this
manual. In order for the front panel controls to be functional a set of jumpers from the “Remote”
and “Front Panel” connector must be made. Refer to the installation section for connection
information. If remote control of level is desired then no connections to the “Front Panel”
connector need be made. Connections for this purpose are made to the “Remote” connector
described in the remote control connections section of this manual. The following remote control
and status are available:
Global Mute – simultaneously for all channels
Stereo pair mute - with corresponding status to light an LED for channels 1 / 2 , 3 / 4, 5 / 6 and 7
/8
Global Dim – all channels simultaneously by 10, 20, or 30 dB
Remote level - control for each of eight channels
When the 5.1 + Stereo Monitor Controller is used in conjunction with the REM-400 series remote
control panels simply connect a standard male to female 25 conductor cable Pins 1-25 identical
on each end.
4
See the remote control/status chart for connection information if the REM-400 panel is not used.
IV. Features and Operation
The 5.1 + Stereo Monitor Controller contains eight VCA level controlled balanced input to
balanced output amplifiers. Each channel has provision for front panel or remote control of level
using voltage controlled amplifier techniques. Each pair of channels can be turned on and off
remotely and there is also provision for a programmable global on/off control of channels. There
is also provision for each channel to be dimmed by 10, 20 or 30 dB. This is also a programmable
feature whereby any combination of channels can be dimmed by one remote control command.
Each remote control command of on/off and dimming function can be programmed to accept a
momentary closure for a toggle function or for a maintained closure for operation.
Standard factory default input level for the 5.1 + Stereo Monitor Controller is +4 dBm balanced
connection. The unit can also be modified to accept -55dBm sensitivity for microphone input use
if desired. Standard output level is +4 dBm balanced. Each output is servo steered such that
grounding one of the balanced outputs will not cause any damage or loss of level.
V. Remote Control and Status Connections
Refer to the following table for remote control and status pin out of the remote DB-25 connector
at the rear of the unit:
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
Pin 10
Pin 11
Pin 12
Pin 13
Pin 14
Pin 15
Pin 16
Pin 17
Pin 18
Pin 19
Pin 20
Pin 21
Pin 22
Pin 23
Pin 24
Pin 25
CH 1 VCA control
CH 2 VCA control
CH 3 VCA control
CH 4 VCA control
Fused +5 VDC VCA source voltage
CH 5 VCA control
CH 6 VCA control
CH 7 VCA control
CH 8 VCA control
Fused +5 VDC VCA source voltage
Group dim control
Group mute control
Chassis Ground
CH ½ (Lf/Rf) Mute On/Off control
CH ½ (Lf/Rf) Mute On/Off status
CH 3/4 (C/Lfe) Mute On/Off control
CH 3/4 (C/Lfe) Mute On/Off status
Control/Status common ground
CH 5/6 (Lr/Rr) Mute On/Off control
CH 5/6 (Lr/Rr) Mute On/Off status
CH 7/8 (Left) Mute On/Off control
CH 7/8 (Right) Mute On/Off status
Control/Status common ground
Group Dim Status
Group Mute Status
5
In order to create a set of remote potentiometers that mimic the function of the front panel
controls the following wiring convention should be used:
Remote 5.1 mix control
1. Jumper Pins 1, 2, 3, 4, 6 and 7 together on the remote control connector.
2. Connect the high side of an audio taper 10K Ohm potentiometer to pin 5.
3. Connect the jumpered connections from step 1 to the wiper of the 10K Ohm audio taper
potentiometer.
4. Connect the low side of the 10k audio taper potentiometer to Pin 18/23 “control/status
common” on the remote control connector.
Remote Stereo mix control
1. Jumper Pins 8 and 9 together on the remote control connector.
2. Connect the high side of a 10K Ohm audio taper potentiometer to pin 10 of the remote control
connector.
3. Connect the jumpered pins from step 1 of this section to the wiper of the 10K Ohm, audio taper
potentiometer.
4. Connect the low side of the 10K Ohm audio taper potentiometer to pin 18/23 “control/status
common” on the remote control connector.
BDI offers the REM-400 remote panel which contains the potentiometers and muting buttons for
the purpose of remote controlling the functions above. It is also possible to provide individual
level control of each channel of the unit. This is sometimes desirable for theatre applications
where local acoustics dictate a custom mix of levels. The REM-400 can be ordered with from two
to eight controls for this purpose. Please contact the factory for availability.
For command lines a simple momentary or maintained closure to control common ground will
activate the desired function. See programming instructions for setting up toggle or maintained
operation. VCA control of each input is accomplished by connecting the +5 VDC source to the
high side of a 10 K ohm audio potentiometer, the low side to control/status common ground and
the wiper to the desired channel VCA control input.
6
Programming the 5.1 + Stereo Monitor Controller Motherboard
The 5.1 + Stereo Monitor Controller can be programmed via jumper placement for the following:
1. Toggle or maintained closure of remote control inputs
2. Global mute and dimming assignment
Refer to the Jumper Assignment Pictorial Diagram for the following discussion
Functional description of jumpers:
JP12-17 Toggle/Maintain control of remote control inputs. Place a jumper to the left if maintained
closure to ground will hold a command in the desired function. Place a jumper to the right if
toggle control is desired. Toggle control is momentary closure for alternate on/off function.
JP19 GRP DIM – assigns by stereo pair which channels will accept a dim command when
remote control dim line is pulled low. Place a jumper in each line where a stereo dim is desired.
Place all jumpers for group dim
JP18 GRP MUTE – assigns by stereo pair which channels will accept a mute command from the
remote control group mute control. – This is a separate mute command that can provide a group
mute of all channels and is not to be confused with the individual channel mutes which are
possible by use of the mute input select jumpers discussed below
JP1B-8B MUTE INPUT SELECT – allows for remote control input lines to be assigned to mute a
specific grouping of channels to be muted. There are four remote mute lines A, B, C, and D. Each
can be assigned to command a specific channel to be muted. Simply select which channel will be
controlled by which remote control input by placing a jumper in the A, B, C, or D, row as desired
on the desired channel jumper.
VU Meter Description
The 5.1 + Stereo Monitor Controller has eight identical LED VU meter displays for convenient
monitoring. The display is a conventional 23 dB scale VU meter display. The VU meter displays
the input level and is independent of the volume controlled output. As shipped from the factory
the unit is calibrated to produce 0 VU display for a 0 dBu input level. It is possible to recalibrate
the meter circuit by removal of the top cover. Each VU meter assembly is a stereo unit and there
are two controls on top of the board for adjustment purposes.
To recalibrate the unit feed the desired nominal level to the unit and adjust each control for a o
VU indication at the desired input level. Note that on each VU meter display assembly that the
potentiometers are reverse ordered as viewed from the front of the unit. That is to say that the left
hand control controls the level of the right hand VU display for a given assembly. The right hand
control controls the left VU meter.
See the diagram on the next page for orientation.
7
5.1
Stereo
Volume
Lf
Rf
C
Lfe
Lr
Rr
Left Right
5.1 + Stero VU Meter Assembly
Top View
Front of Unit
5.1 + Stereo Monitor
Controller
8
V. Specifications
Inputs Sensitivity:
0 dBu or -55 dBm any input
Outputs:
0 dBu balanced 600 ohms
Frequency Response:
+/- 0.2 dB from 20 Hertz to 20 KHz
Total Harmonic Distortion:
less than .05% any channel at any frequency
At +4 dBm nominal operating level
Maximum Output level:
+17 dBu
Mute Isolation:
70 dB or greater all channels from 20 Hertz to
20 KHz
VU Meter Calibration:
0 VU = 0 dBu Input Standard 23 dB segmented
display – Field Adjustable
Remote Control:
Custom remote control via REM-400 Panel
Remote Status:
Active low ground, +5 VDC inactive TTL
compatible
Power Requirements:
120/240 V.A.C. @ 0.25A; 50 – 60 Hz.
Operating Environment:
0 – 60 Degrees Celsius Non Condensing
Atmosphere
Physical:
19”W X 10”D X 1.75”H Mounted via Standard
E.I.A. 19” rack one rack unit occupied. Weight:
12 LBS.
9
VI. Warranty
Broadcast Devices, Inc. products are warranted against failure due to faulty materials or
workmanship for a period of one year from the date of shipment to the ultimate user. The
warranty covers repair or replacement of defective parts at the factory, provided the unit has
been returned prepaid by the user. All shipments to the factory shall have affixed to the outside of
the container an R. A. number obtained from the factory. The above warranty is void if the unit
has been modified by the user outside of any recommendations from the factory or if the unit has
been abused or operated outside of its electrical or environmental specifications. If customer
conducted field tests suggest that the unit may be faulty, whether or not the unit is in warranty, a
full report of the difficulty should be sent to Broadcast Devices, Inc. factory at Cortlandt Manor,
New York. The office may suggest further tests or authorize return for factory evaluation.
Units sent to the factory should be well packed in the original packing if possible and shipped to
Broadcast Devices, Inc. 2066 E. Main Street, Cortlandt Manor, NY 10567. Remember to affix the
R.A. number to the outside of the carton. Any packages received without such R.A. number will
be refused. Note: freight collect shipments will also be refused. When the unit has been received,
inspected and tested, the customer will receive a report of the findings along with a quotation for
recommended repairs, which are found falling outside of the standard warranty. Units returned for
in-warranty repairs which are found not to be defective will be subject to an evaluation and
handling charge. In-warranty units will be repaired at no charge and returned via prepaid freight.
Out-of-warranty units needing repair require a purchase order and will be invoiced for parts,
labor, and shipping charges.
When ordering replacement part, always specify A) Part number or Description, and Quantity;
B) Date of Purchase, Where Purchased; C) Any Special Shipping Instructions. Always specify a
street address, as shipping companies cannot deliver to a postal box.
Broadcast Devices, Inc. is not responsible for any other manufacturer’s warranty on original
equipment. Nor are we responsible for any failure, damage, or loss of property that may occur
due to the installation or operation of our equipment outside of recommended specifications.
Broadcast Devices, Inc. may from time to time make changes to the materials used in the
manufacture of its equipment and reserves the right to do so without further notice.
10
VII. Schematic Diagrams
11
Audio and Remote Control Connector Designations
AUDIO IN
P1
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
AUDIO OUT
CH8IN-P
CH8IN-N
CH8OUT-P
CH8OUT-N
CH7IN-P
CH7IN-N
CH7OUT-P
CH7OUT-N
CH6IN-P
CH6IN-N
CH6OUT-P
CH6OUT-N
CH5IN-P
CH5IN-N
CH5OUT-P
CH5OUT-N
CH4IN-P
CH4IN-N
CH4OUT-P
CH4OUT-N
CH3IN-P
CH3IN-N
CH3OUT-P
CH3OUT-N
CH2IN-P
CH2IN-N
CH2OUT-P
CH2OUT-N
CH1IN-P
CH1IN-N
CH1OUT-P
CH1OUT-N
KF22X-B25S-N
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
P2
KF22X-B25S-N
RN1
2.2Kx9 SIP
+5V
P3
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
KF22X-B25S-N
1N4148
Mute Lf/Rf
+5V
R10
1
2
3
4
5
6
7
8
9
10
REMOTE CONTROL
CR2
2.2K
CR3 1N4148
CH1VCACTL
Mute Center/Lfe
CH2VCACTL
STATUSA
CH3VCACTL
R11
2.2K
CR4 1N4148
CH4VCACTL
STATUSB
Mute Lr/Rr
R12
CR5
CH5VCACTL
CH6VCACTL
STATUSC
CH7VCACTL
2.2K
1N4148
+5V
Mute L/R Stereo
R13
CH8VCACTL
STATUSD
2.2K
CR6
1N4148
R14
CR7
2.2K
1N4148
R15
2.2K
VREMOTE
STATUSF
+5V
1
F1
1A PTC
Group Mute
STATUSE
Group Dim
JP20
+12V
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