AUSTRALIAN MONITOR MX883 Installation and Operation Manual

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AUSTRALIAN MONITOR MX883 Installation and Operation Manual | Manualzz

M X 8 8 3

8 C H A N N E L S T E R E O M I C / L I N E M I X E R

I N S TA L L AT I O N A N D O P E R AT I O N M A N UA L

I M P O RTA N T S A F E T Y I N F O R M AT I O N

1. Save the carton and packing material even if the equipment has arrived in good condition. Should you ever need to ship the unit, use only the original factory packing.

2. Read all documentation before operating your equipment. Retain all documentation for future reference.

3. Follow all instructions printed on unit chassis for proper operation.

4. Do not spill water or other liquids into or on the unit, or operate the unit while standing in liquid.

5. Make sure power outlets conform to the power requirements listed on the back of the unit.

6. Do not use the unit if the electrical power cord is frayed or broken.

The power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords and plugs, convenience receptacles, and the point where they exit from the appliance.

7. Always operate the unit with the AC ground wire connected to the electrical system ground. Precautions should be taken so that the means of grounding of a piece of equipment is not defeated.

8. Mains voltage must be correct and the same as that printed on the rear of the unit. Damage caused by connection to improper AC voltage is not covered by any warranty.

9. Have gain controls on amplifi ers turned down during power-up to prevent speaker damage if there are high signal levels at the inputs.

10 Power down & disconnect units from mains voltage before making

connections.

11. Never hold a power switch in the “ON” position if it won’t stay

12. Do not use the unit near stoves, heat registers, radiators, or other heat

13. Do not block fan intake or exhaust ports. Do not operate equipment on a surface or in an environment which may impede the normal fl ow of air around the unit, such as a bed, rug, weathersheet, carpet, or completely enclosed rack. If the unit is used in an extremely dusty or smoky environment, the unit should be periodically “blown free” of foreign matter.

14. Do not remove the cover. Removing the cover will expose you to potentially dangerous voltages. There are no user serviceable

15. Do not drive the inputs with a signal level greater than that required to drive equipment to full output.

16. Do not connect the inputs / outputs of amplifi ers or consoles to any other voltage source, such as a battery, mains source, or power supply, regardless of whether the amplifi er or console is turned on or off.

17. Do not run the output of any amplifi er channel back into another channel’s input. Do not parallel- or series-connect an amplifi er output with any other amplifi er output. Australian Monitor Inc is not responsible for damage to loudspeakers for any reason.

18. Do not ground any red (“hot”) terminal. Never connect a “hot” (red) output to ground or to another “hot” (red) output!

19. Non-use periods. The power cord of equipment should be unplugged from the outlet when left unused for a long period of time.

20. Service Information Equipment should be serviced by qualifi ed service

A. The power supply cord or the plug has been damaged.

B. Objects have fallen, or liquid has been spilled into the equipment

C. The equipment has been exposed to rain

D. The equipment does not appear to operate normally, or exhibits a marked change in performance

E. The equipment has been dropped, or the enclosure damaged.

THIS SAFETY INFORMATION IS OF A GENERAL NATURE AND MAY BE SUPERSEDED BY INSTRUCTIONS CONTAINED WITHIN THIS MANUAL

I N T R O D U C T I O N A N D C O N T E N T S

The MX883 is a stereo 8 channel audio mixer that operates from

110/230-240 VAC @ 50/60 Hz. The MX883 offers high quality audio performance & a wide array of features in a standard 2 RU size.

For table mounting, rubber feet are supplied but these can be removed if rack mounting is intended. There are eight dual purpose inputs consisting of balanced XLR inputs switchable between mic & line level and stereo RCA line level inputs. Each channel also features a line level direct output which can be used to feed additional amplifi ers, mixers or recording devices. An internal jumper allows each input to be routed to the direct output either pre or post fader. Each input has front panel trim control, status LED and bass & treble controls. Each input channel can be routed to the left, right or aux output. The left and right outputs have a constant Q 5 band graphic EQ stage. Priority muting is available as an optional addition as is remote VCA master control and tone generation.

The MX883 also features 4 segment LED output metering & the ability to internally switch input 1 to be either pre or post master. With both

Headphone out & Record out also available the MX883 is extremely versatile. The MX883 has taken the AMIS heritage of contractor friendly installation product & has added the audio fi delity needed in today’s AV contracting market.

I N T R O D U C T I O N 3

F R O N T PA N E L

R E A R PA N E L

I N T E R N A L A D J U S T M E N T S

I N S TA L L AT I O N & T R O U B L E S H O OT I N G

B A S I C S E T U P A N D O P E R AT I O N

D I M E N S I O N S 9

B L O C K D I AG R A M

6

7

4

5

8

1 0

S P E C I F I C AT I O N S 1 1

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK),

NO USER SERVICEABLE PARTS INSIDE,

REFER SERVICING TO QUALIFIED SERVICE PERSONAL.

WARNING!

TO REDUCE THE RISK OF FIRE OR ELECTRIC HOCK

DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

AUS, EUR, USA

Copyright 9th Feb 2006

Rev A 13/02/07

Rev B 19/03/08

This symbol is intended to alert the user to the presence of uninsulated “dangerous voltage” within the products enclosure that may be of suffi cient magnitude to constitute a risk of electric shock to persons.

This symbol is intended to alert the user to the presence of important operational and maintenance (servicing) instructions in the literature accompanying the appliance.

Caution: To prevent electric shock do not use this (polarised) plug with an extension cord, receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure.

To prevent electric shock, match wide blade of plug to wide slot, fully insert.

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F R O N T PA N E L

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7 10

5 1 2 3 6 9 11

This control is used to adjust the input gain and affects both the XLR and the RCA inputs. The input gain can be adjusted by +/- 15dB. This allows a wide rage of program sources to be set up with optimum gain structure.

With the gain trim in the centre position, the boost/cut is set to 0dB. See the block diagram on page 10 for details of the gain structure.

Controls the level of the input signal.

3 INPUT STATUS LEDS

Each input has an LED status indicator. The LED is green when there is signal present and red if the signal is approaching clip. If the LED begins to light red this would indicate the internal signal level is 6dB before clip.

Note that the front panel level control is post status LED and as such, the status LED is NOT affected by the level control. If an input channel is clipping use the gain control to adjust the correct amount of input level.

4 CHANNEL TONE CONTROLS

Each input has a 2 band EQ.

Bass – +/-12dB 100Hz shelving

Treble – +/-9dB 10kHz shelving

5 BUS SELECT SWITCHES

These switches connect each input to the left, right or aux outputs. The

LED above the switch indicates when the channel is being routed to the respective output.

For stereo inputs the left signal only is routed to the left bus, the right signal only is routed to the right bus, and a mono summed signal is sent to the aux bus.

6 LEFT, RIGHT AND AUX MASTER

These pots control the overall mixed output level for the left, right and aux channels respectively.

7 LEFT, RIGHT AND AUX VU DISPLAY

These VU displays indicate output level for the left, right and aux channels respectively.

8 LEFT AND RIGHT GRAPHIC EQ

These 5 band EQ sections are constant Q fi lters with centers at 100Hz,

300Hz, 1kHz, 3kHz and 10kHz. Each fi lter has a range of 12dB cut and boost.

This 1/4” jack socket allows headphones to be used for monitoring. It can be set as pre or post master volume control. It can also be set to listen to the aux output, pre or post aux fader. See “Internal Settings” on page 6.

Default factory setting is pre master volume control.

10

This switch switches power from the mains. The up position is on.

11 POWER ON LED

This indicates there is power to the unit.

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R E A R PA N E L

9 10 7 8

5

6 4 3 2 1

Each channel has two inputs:

XLR input - This is a balanced input. It accepts mic or line level signals depending on the adjacent gain switch position. The XLR will also have

+15V phantom power if selected on the adjacent switch.

RCA input - This is an unbalanced line level input. The two RCA sockets are stereo, left and right.

2 P/P – PHANTOM POWER

15V phantom power is available for condenser or electret microphones on the XLR input when this switch is in the “ON” position.

3 MIC / LINE

These two switches control the sensitivity of the XLR input. In the “MIC” position the XLR input is suitable for use with microphones; in the “LINE” position the XLR input is suitable for use with a balanced line level signal.

NOTE: Both MIC/LINE switches must be in the same

position for correct operation of the balanced input.

NOTE: The MIC/LINE switches only affect the XLR input.

6 LEFT, RIGHT AND AUX OUTPUT

The OUTPUT XLR’s provides balanced line level signal of the left, right and aux channels respectively.

NOTE: When wiring the LINE output as unbalanced, Pin2

should be wired as hot and Pin1 should be wired as ground/shield.

Do not wire Pin3.

7

This connector is used for linking two MX883’s together. A short cable

(<300mm) connecting pin for pin should be used. When linked all

16 channels will sum together and both master and slave outputs will work independantly.

The buses sum pre master level controls, alowing the outputs on either the master or slave unit to be used.

8

When linking two MX883’s only one mixer should be set to master. The other should be set to slave. When an MX883 is used on its own, this switch should be set to master.

4

A unique feature of the MX883 is the individual direct output available for all 8 channels. The direct outputs are a mono sum of the stereo inputs and

XLR input and are accessed via balanced TRS 1/4” sockets for each channel. The level of each output is 0dBu (nominal). The direct outputs are adjustable to be pre or post the channel level control, see the Internal

Adjustments.

9 IEC MAINS INPUT SOCKET

This is a standard IEC 3 pin socket. It accepts a standard IEC mains cable, provided. The fuse draw contains the mains fuse and a spare. The mains fuse is a time lag (slow blow) HRC 20mm x 5mm ceramic type fuse.

The ratings are:

230V/240V model 100mA

115V model 200mA

IMPORTANT: Always replace the fuse with one of the same value

5 REC OUT & AUX REC OUT

The REC OUT output is on unbalanced RCA connectors. The output is not affected by the MASTER volume control.

NOTE: Always disconnect power to the amplifi er before

10

OPTIONAL MODULE INPUTS

This socket is used with a tone module and/or VCA module.

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I N T E R N A L A D J U S T M E N T S

2 5

5 5

1

1 CHANNEL DIRECT OUT PRE/POST FADER

The pre or post assignment of the direct output is set via this jumper. This is used to make the Direct Outputs either pre or post channel fader volume.

Set to the Channel 1 side the Direct Output is post fader (i.e. the channel fader volume affects the Direct Output). Set to the Channel 8 side the Direct

Output is pre fader. The default factory setting is pre fader.

2 CHANNEL 1 AND 2 HPF

Channels 1 and 2 have a 120Hz 24dB/octave high pass fi lter to remove handling noise and fl oor rumble. The fi lter is active by default. The jumpers are located at the back of the unit on the upper board near channels 1 and

2. Move the jumper toward channel 8 to bypass the fi lter.

3 CHANNEL 1 ROUTING

If channel 1 is being used as a priority input it can be routed so that the master volume does not affect channel 1. The default factory setting is pre master fader meaning the master volume affects channel 1 in the mix. The switch is located near the master pots. Move the switch toward channel 1 to set channel 1 to post master fader.

3

4

The headphone level can be routed so that it is affected by the master volume. The default factory setting is pre master fader meaning the master volume does not affect the headphone volume. The switch is located just behind the front panel near the master pot. Move the switch toward the front to set the headphone to post master fader. The headphone can also listen to the aux output. The headphone source switch is below the pre/ post switch. Move the switch toward the front to set it to aux. When set to aux the headphone is always post fader.

5

The MX883 can have installed:

- 2 VCA modules for left and right outputs

- Tone Generator module

- 2 Priority Muting modules for left and right outputs

See your local Australian Monitor dealer for more information.

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4

I N S TA L L AT I O N A N D T R O U B L E S H O O T I N G

INPUT CONNECTIONS

For wiring balanced in, pin 2 is hot. Unbalanced wiring on the microphone inputs is not recommended. Balanced input wiring (shielded pair cable) is recommended.

Unbalanced RCA wiring should be keep as short as possible. Typically less than 3m.

LINE OUTPUT

The LINE output XLR can be used to connect up to 6 booster amplifi ers.

Balanced wiring (shielded pair cable) is recommended.

NOTE: When wiring the LINE output as unbalanced, Pin2 should be wired as hot and Pin1 should be wired as ground/shield.

Do not wire Pin3.

RECORD OUTPUT

The Record output wiring should be kept as short as possible. Typically less than 3m.

DIRECT OUTPUT

The direct outputs are balance and should be wired tip hot. When wiring the direct outputs as unbalanced or when using a mono jack the ring and sleeve should be connected together and to the shield.

T R O U B L E S H O OT I N G G U I D E

Power LED not on

Noisy output

Distorted sound

No sound but unit is on

Tones and/or VCA control does not work

Condenser microphone does not work

Power not reaching unit

Incorrect gain structure

Input is overloaded

Output is being over driven

Bass control is turned up

Volume turned down

Module not installed

Phantom power not switched on

M X 8 8 3 I N S TA L L AT I O N & O P E R AT I O N M A N U A L

Check mains connection

Check mains fuse

Check power switch is on

See setup guide

Check MIC/LINE switch

Reduce input level at source

Reduce output volume

Reduce Bass control level

Check volume controls

Purchase optional modules

Switch on phantom power

PA G E 7

B A S I C S E T U P A N D O P E R AT I O N

The inputs of the MX883 can accommodate a wide range of sources including dynamic microphones, DVD and CD players. The output may be used to drive power (booster) amplifi ers, other mixers or mixer amplifi ers.

Each installation will require setting the appropriate relative mix of levels between microphones and program. Also consider what the output is driving.

Setting up correct gain structure through the whole system is important to achieve optimal results. The following step by step procedure has been devised to assist during the setup process. When the MX883 was shipped to you from the factory, it was set up in a particular way. In the following procedure it is essential that you are starting from these initial settings.

+ Program Input Gain Controls – half (12 o’clock)

+ XLR Mic/Line switch – MIC

+ XLR Phantom power - on

+ Input Level Controls – off

+ Output Level Control – off

CONNECT THE SOURCES

First connect all the required sources to the appropriate input connectors.

If the source is a microphone, set the MIC/LINE switches to the “MIC” position. If the source is an electret or condenser microphone, set the phantom switch to the “P/P on” position.

CONNECT THE OUTPUTS

Turn the amplifi ers off. Connect the MX883 output to the amplifi ers’ line level input. Check that the MX883 is on, and then turn on the amplifi ers.

If the amplifi ers have a level control, set them it to a sensitivity of 0dBu.

If in doubt, set it to maximum.

SET THE LEVELS

Turn the input levels up to 5. Turn up the output level until it is at an

appropriate level for the listening environment. You will now have to adjust the relative levels of the inputs to achieve a good balance. The aim of these adjustments is to have all level controls at between 3 and 7. This may not be possible however. A good rule of thumb is that input level controls should be higher than the output level controls.

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D I M E N S I O N S

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B L O C K D I A G R A M

PA G E 1 0 M X 8 8 3 I N S TA L L AT I O N & O P E R AT I O N M A N U A L

S P E C I F I C AT I O N S

FREQUENCY RESPONSE

TOTAL HARMONIC DISTORTION

SIGNAL TO NOISE RATIO

CROSSTALK

20Hz - 20kHz (+0,-3dB)

< 0.1% @ 1kHz

> 90dB (all pots at centre position)

>70dB

TONE CONTROLS BASS @ 100HZ +/-

TREBLE @ 10KHZ +/-

SENSITIVITY (TRIM IN CENTRE 0 d B) Mic Sens 4.36mV, -45dBu Imp 1k3ohm

Line Sens 0.775V, 0dBu Imp >100k

RCA 200mV, -12dBu Imp 30kohm

MAX LEVEL IN XLR mic -9dBu

XLR line >30dBu

RCA >30dBu

+21dBu MAX LEVEL OUT

PHANTOM POWER

OUTPUTS MASTER OUT

MONO HEADPHONE OUT

MONO REC OUT

CHANNEL DIRECT OUT

15V DC

Nominal Level 0dBu into 1kohm

Imp 100ohm

Nom -6dB into 200ohm

Imp 10ohm

Nom -12dB into 10kohm

Imp 10kohm

Nom 0dB into 1kohm

Imp 100 ohm

POWER INPUT

POWER CONSUMPTION (MAX)

FUSES

AC: 230V/50Hz or 115V/60Hz, 3 pin IEC320-C14 connector

30 VA

MAINS (115V) 200mA

MAINS (230V) 100mA

DIMENSIONS H X W X D

SHIPPING DIMENSIONS

WEIGHT

88mm x 482mm x 270mm (3.5“x19”x10.6”)

170mm x 505mm x 350mm (6.7“x19.9”x13.8”)

Net 4.0kg (8.8lb)

Shipping 4.5kg (9.9lb)

M X 8 8 3 I N S TA L L AT I O N & O P E R AT I O N M A N U A L PA G E 1 1

AUSTRALIA AND NEW ZEALAND

www.australianmonitor.com.au

SYDNEY

(NSW & ACT SALES)

1 Clyde Street

Silverwater

NSW 2128

Private Bag 149

Silverwater NSW 1811

Phone: (02) 9647 1411

Fax: (02) 9648 3698

Email: [email protected]

MELBOURNE

(VIC & TAS SALES)

22/277

Middleborough Road

Box Hill VIC 3128

PO Box 151 Blackburn

South VIC 3130

Phone: (03) 9890 7477

Fax: (03) 9890 7977

Email: [email protected]

BRISBANE

(QLD SALES)

42 Commercial Road

Fortitude Valley

QLD 4006

PO Box 2578 Fortitude

Valley BC QLD 4006

Phone: (07) 3852 1312

Fax: (07) 3252 1237

Email: [email protected]

ADELAIDE

(SA & NT SALES)

31 Walsh Street

Thebarton

SA 5031

PO Box 157

Hindmarsh SA 5007

Phone: (08) 8352 4444

Fax: (08) 8352 4488

Email: [email protected]

PERTH

(WA SALES)

3/11 Howe Street

Osborne Park WA 6017

PO Box 1281

Osborne Park BC

WA 6916

Phone: (08) 9204 0200

Fax: (08) 9244 3783

Email: [email protected]

AUCKLAND

(NZ SALES)

9C Piermark Drive

Albany 0752

New Zealand

PO Box 300-512

Albany 0752

Phone: (09) 415 9426

Fax: (09) 415 9864

Email: [email protected]

EUROPE / ASIA / MIDDLE EAST

www.australianmonitor.com.au

INTERNATIONAL SALES

1 Clyde Street Silverwater NSW 2128 Australia

Private Bag 149 Silverwater NSW 1811

Phone: (02) 9647 1411

Fax: (02) 9648 3698

Email: [email protected]

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