Sonifex RM-MC1L Instruction Manual

Reference Monitor
Controllers
User Handbook
RM-MC1L Monitor Controller, Single Stereo Input & Output
With Light Control
RM-MC4L Monitor Controller, 4 Stereo Inputs, 1 Output With
Light Control
RM-MC51L Monitor Controller, 5.1 Stereo Inputs & Outputs
With Light Control
RM-MCL Monitor Light Controller, 3 Button,
TX-STANDBY-REH

bReference Monitor Controllers User Handbook
This handbook is for use with the following products.
RM-MC1L Monitor Controller, Single Stereo Input & Output With Light Control
RM-MC4L Monitor Controller, 4 Stereo Inputs, 1 Output With Light Control
RM-MC51L Monitor Controller, 5.1 Stereo Inputs & Outputs With Light Control
RM-MCL Monitor Light Controller, 3 Button, TX-STANDBY-REH
©Sonifex Ltd, 2010
All Rights Reserved
Revision 1.02, June 2013
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel: [phone]
Fax: [phone]
Email: [email protected].uk
Website: http://www.sonifex.co.uk
Information in this document is subject to change without notice and does not represent a commitment on the part of
the vendor. Sonifex Ltd shall not be liable for any loss or damage whatsoever arising from the use of information or any
error contained in this manual.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical,
including photocopying, recording, information storage and retrieval systems, for any purpose other than the purchaser’s
personal use, without the express written permission of Sonifex Ltd. Unless otherwise noted, all names of companies,
products and persons contained herein are part of a completely ctitious adaptation and are designed solely to
document the use of Sonifex product.
REFERENCE MONITOR CONTROLLERS
USER HANDBOOK
REFERENCE MONITOR CONTROLLERS USER HANDBOOK

Reference Monitor Controllers User Handbook c
CONTENTS
CONTENTS
Warranty i
Warranty and Liability i
Unpacking the Reference Monitor Controller iii
Returning the Warranty Card iii
Safety Information iv
Safety of Mains Operated Equipment iv
Voltage Setting Checks iv
Fuse Rating iv
Power Cable and Connection iv
Ordering the Correct Mains Lead v
Installation Information v
Atmosphere v
Electromagnetic Radiation v
WEEE & RoHS Directives - Sonifex Statement vi
1 Reference Monitor Controllers Introduction 1
2 RM-MC1L Monitor Controller 2
Front Panel Controls & Indicators 3
Power LED 3
Light Control Buttons 3
DIM Button 4
CUT Button 4
Master Volume Control 4
Rear Panel Controls & Connectors 5
DIM Level Adjustment Potentiometer 5
Audio Inputs 5
Audio Outputs 5
Remote Port 5
Mains Power 6
3 RM-MC4L Monitor Controller 7
Input Select Buttons 8
Rear Panel Controls & Connectors 8
Audio Inputs 8
4 RM-MC51L Monitor Controller 9
Rear Panel Controls & Connectors 10
Audio Inputs 10
Audio Outputs 10
5 RM-MCL Monitor Controller 11
Light Control Buttons 11
Rear Panel Controls & Connectors 12
6 Technical Specication 13

dReference Monitor Controllers User Handbook
FIGURES
FIGURES
Figures
Fig A: Packing List iii
Fig B: Power Connections iv
Fig C: Mains Lead Table v
Fig 1-1: RM-MC1L Block Diagram 2
Fig 1-2: RM-MC1L Monitor Controller, Single Stereo Input & Output With Light Control 3
Fig 1-3: Rear View of RM-MC1L 5
Fig 2-1: RM-MC4L Block Diagram 7
Fig 2-2: RM-MC4L Monitor Controller, 4 Stereo Inputs, 1 Stereo Output With Light Control 8
Fig 2-3: Rear View of RM-MC4L 8
Fig 4-1: RM-MC51LBlock Diagram 9
Fig 4-2: RM-MC51L Monitor Controller, 5.1 Stereo Inputs & Outputs With Light Control 10
Fig 4-3: Rear View of RM-MC51L 10
Fig 5-1: RM-MCL Block Diagram 11
Fig 5-2: RM-MCL Monitor Light Controller, 3 Button, TX-STANDBY-REH 11
Fig 5-3: Rear View of RM-MC1L 12

Reference Monitor Controllers User Handbook i
Warranty
Warranty and Liability
Important: the purchaser is advised to read this clause
(a) The Company agrees to repair or (at its discretion) replace Goods which are found to
be defective (fair wear and tear excepted) and which are returned to the Company
within 12 months of the date of despatch provided that each of the following
are satised:
(i) notication of any defect is given to the Company immediately upon its
becoming apparent to the Purchaser;
(ii) the Goods have only been operated under normal operating conditions and
have only been subject to normal use (and in particular the Goods must have
been correctly connected and must not have been subject to high voltage or
to ionising radiation and must not have been used contrary to the Company’s
technical recommendations);
(iii) the Goods are returned to the Company’s premises at the Purchaser’s expense;
(iv) any Goods or parts of Goods replaced shall become the property of
the Company;
(v) no work whatsoever (other than normal and proper maintenance) has been
carried out to the Goods or any part of the Goods without the Company’s prior
written consent;
(vi) the defect has not arisen from a design made, furnished or specied by
the Purchaser;
(vii) the Goods have been assembled or incorporated into other goods only in
accordance with any instructions issued by the Company;
(viii) the defect has not arisen from a design modied by the Purchaser;
(ix) the defect has not arisen from an item manufactured by a person other than
the Company.
In respect of any item manufactured by a person other than the Company, the Purchaser
shall only be entitled to the benet of any warranty or guarantee provided by such
manufacturer to the Company.
(b) In respect of computer software supplied by the Company the Company does not
warrant that the use of the software will be uninterrupted or error free.
WARRANTY
WARRANTY

ii Reference Monitor Controllers User Handbook
(c) The Company accepts liability:
(i) for death or personal injury to the extent that it results from the negligence of
the Company, its employees (whilst in the course of their employment) or its
agents (in the course of the agency);
(ii) for any breach by the Company of any statutory undertaking as to title, quiet
possession and freedom from encumbrance.
(d) Subject to conditions (a) and (c) from the time of despatch of the Goods from the
Company’s premises the Purchaser shall be responsible for any defect in the Goods
or loss, damage, nuisance or interference whatsoever consequential economic or
otherwise or wastage of material resulting from or caused by or to the Goods. In
particular the Company shall not be liable for any loss of prots or other economic
losses. The Company accordingly excludes all liability for the same.
(e) At the request and expense of the Purchaser the Company will test the Goods to
ascertain performance levels and provide a report of the results of that test. The
report will be accurate at the time of the test, to the best of the belief and knowledge
of the Company, and the Company accepts no liability in respect of its accuracy
beyond that set out in Condition (a).
(f) Subject to Condition (e) no representation, condition, warranty or other term,
express or implied (by statute or otherwise) is given by the Company that the Goods
are of any particular quality or standard or will enable the Purchaser to attain any
particular performance or result, or will be suitable for any particular purpose or use
under specic conditions or will provide any particular capacity, notwithstanding
that the requirement for such performance, result or capacity or that such particular
purpose or conditions may have been known (or ought to have been known) to the
Company, its employees or agents.
(g) (i) To the extent that the Company is held legally liable to the Purchaser for any
single breach of contract, tort, representation or other act or default, the
Company’s liability for the same shall not exceed the Price of the Goods.
(ii) The restriction of liability in Condition (g)(i) shall not apply to any liability
accepted by the Seller in Condition (c).
(h) Where the Goods are sold under a consumer transaction (as dened by the
Consumer Transactions (Restrictions on Statements) Order 1976) the statutory
rights of the Purchaser are not aected by these Conditions of Sale.
WARRANTY
WARRANTY

Reference Monitor Controllers User Handbook iii
Unpacking the Reference Monitor Controller
The Reference Monitor Controller is shipped with the following equipment. Please check
your packaging to ensure that you have all of the items below. If anything is missing, please
contact the supplier of your equipment immediately.
Item Quantity Reference Monitor Controller
Reference Monitor Controller 1
IEC mains lead tted with moulded mains plug 1
Handbook and warranty card 1
Fig A: Packing List
Each Reference Monitor Controller is shipped in protective packaging and should be
inspected for damage before use. Where an item is found to have transit damage, notify
the carrier immediately with all the relevant details of the shipment. Packing materials
should be kept for inspection and also for if the product needs to be returned.
Returning the Warranty Card
In order to register the date of purchase so that we can keep you informed of any design
improvements or modications, it is important to complete the warranty registration
document that is enclosed and return it to Sonifex Ltd in the UK.
For your own records you should write down the serial number (which can be found on the
rear of the Reference Monitor Controller.
Serial Number ………………………………………
WARRANTY
WARRANTY

iv Reference Monitor Controllers User Handbook
Safety Information
Safety of Mains Operated Equipment
This equipment has been designed to meet the safety regulations currently
advised in the country of purchase and it conforms to the safety regulations
specied by use of the CE Mark.
Warning : There are no user serviceable parts inside the equipment. If you should ever
need to look inside the unit, always disconnect the mains supply before removing the
equipment covers.
Voltage Setting Checks
Ensure that the machine operating voltage is correct for your mains power supply by
checking the box in which your Reference Monitor Controller was supplied. The voltage is
shown on the box label. Please note that all Reference Monitor Controllers have a universal
power supply, 85-264V AC, 47-63Hz.
Fuse Rating
The Reference Monitor Controller is supplied with a single fuse in the live conducting path
of the mains power input. For reasons of safety it is important that the correct rating and
type of fuse is used. Incorrectly rated fuses could present a possible re hazard, under
equipment fault conditions. The fuse rating for the Reference Monitor Controller is:
1A 5 x 20mm SB
The active fuse is tted on the outside rear panel of the unit.
Power Cable and Connection
An IEC power connector is supplied with the Reference Monitor Controller which has a
moulded plug attached – this is a legal requirement. If no moulded plug has been supplied
with your Reference Monitor Controller, please contact your supplier, because an IEC
connector is always supplied from the Sonifex factory.
If for any reason, you need to use the Reference Monitor Controller with a dierent power
cable, you should use the following wiring guidelines.
Wire Colour Connection
Green, or green and yellow Earth (E)
Blue, or black Neutral (N)
Brown, or red Live (L)
Fig B: Power Connections
Connect the equipment in accordance with the connection details and before applying
power to the unit, check that the machine has the correct operating voltage for your mains
power supply.
Important Note : The terminal marked on the rear panel must be earthed.
SAFETY INFORMATION
SAFETY INFORMATION

Reference Monitor Controllers User Handbook v
Ordering the Correct Mains Lead
When ordering a Reference Monitor Controller from Sonifex, it is helpful if you can specify
your required operating voltage and mains lead. After the product code add:
UK, for 230V, UK 3 pin to IEC lead
EC, for 230V, European Schuko 2 pin to IEC lead
US, for 115V, 3 pin to IEC lead
AU for 230V, Australasian 3 pin to IEC lead
Fig C: Mains Lead Table
E.g. order RM-MC1L UK for a UK IEC lead to be supplied.
Installation Information
Atmosphere
The units should be installed in an area that is not subject to excessive temperature
variation (<0°C, >50°C), moisture, dust or vibration.
Electromagnetic Radiation
The cover is connected to earth by means of the xing screws. It is essential to maintain
this earth ground connection to ensure a safe operating environment and provide
electromagnetic shielding.
SAFETY INFORMATION
SAFETY INFORMATION

vi Reference Monitor Controllers User Handbook
WEEE & RoHS Directives - Sonifex Statement
The Waste Electrical and Electronic Equipment (WEEE) Directive was agreed on
13 February 2003, along with the related Directive 2002/95/EC on Restrictions
of the use of certain Hazardous Substances in electrical and electronic
equipment (RoHS).
The Waste Electrical and Electronic Equipment Directive (WEEE) aims to minimise the
impacts of electrical and electronic equipment on the environment during their life times
and when they become waste. It applies to a huge spectrum of products. It encourages
and sets criteria for the collection, treatment, recycling and recovery of waste electrical and
electronic equipment. All products manufactured by Sonifex Ltd have the WEEE directive
label placed on the case. It gives a contact for individuals who are unsure about the correct
procedure when the product has reached its “end of use”.
Sonifex Ltd will be happy to give you information about local organisations that can
reprocess the products, or alternatively all products that have reached “end of use” can be
returned to Sonifex and will be reprocessed correctly free of charge.
Sonifex Ltd has phased out the use of certain hazardous substances identied in the
European Union’s Restriction of Hazardous Substances (RoHS) directive. The RoHS
directive limits the use of certain hazardous substances currently used in EEE manufacture,
including lead, mercury, cadmium, hexavalent chromium, and halide-containing
compounds PBB (polybrominated biphenyl) and PBDE (polybrominated diphenyl ether).
Elimination of these substances will result in more environmentally friendly recycling
of electronic equipment. For the products which Sonifex manufacture, the main area
where products were aected was in the use of lead for manufacturing and assembling
electronics circuit boards.
Sonifex Ltd practices lead-free (LF) manufacturing processes. LF solder is used on the
surface-mount PCB manufacturing processes and for hand soldering. The printed circuit
boards (PCBs) used are either gold plated, or immersion tin plated, both of which use no
lead. Historically the PCBs were hot air solder levelled (HASL) PCBs which used tin/lead
based solder.
The manufacturing processes include the assembly of purchased components from
various sources. Product is oered as RoHS compliant, or LF, only after sucient evidence
is received from the component manufacturers that their components are RoHS compliant.
Sonifex Ltd relies solely on the distributor, or manufacturer, of the components for
identication of RoHS compliance. Thus whilst every eort is made to ensure compliance,
Sonifex Ltd makes no warranty, or certication, or declaration of compliance concerning
said components.
Sonifex Ltd denes “Lead Free”as pertaining to any product, which has been manufactured
by Sonifex Ltd using components which have been declared by the manufacturers as
“Lead Free”. All statements by Sonifex Ltd of RoHS compliance are based on component
manufacturer documentation.
WEEE & ROHS DIRECTIVE
WEEE & ROHS DIRECTIVE

Reference Monitor Controllers User Handbook 1
INTRODUCTION
INTRODUCTION
1 Reference Monitor Controllers Introduction
The Reference Monitor Controllers are a range of 1U rack-mount audio production
control units, for providing source selection, volume, DIM and CUT controls for
external analogue monitors, together with light controls for the Sonifex SignalLED
range of studio signs, or similar.
Each of the products has a light control section. This section has 3 buttons:
Transmit (TX), STANDBY and Rehearse (REH). The TX and REH buttons control
opto-isolated outputs on the rear panel remote connector, and these provide a
direct control interface to the Sonifex SignalLED illuminated studio sign, allowing
twin signs to be controlled individually.
The Standby button initiates a 2 minute countdown where the TX and REH
buttons and their associated remote outputs ash alternately. After the 2 minutes
has elapsed, the TX output remains on.
The remote port also has open-collector tally outputs for Transmit (TX) and
Rehearse (REH), as well as remote input control for the audio controls DIM and
CUT, and the light controls TX, Standby and REH. There is also a +12VDC source at
200mA maximum.
The TX, STANDBY and REH buttons can optionally be replaced if you want to use
dierent buttons for other applications.
There are four Monitor Controller products:
RM-MC1L Monitor Controller, Single Stereo Input & Output With Light Control
RM-MC4L Monitor Controller, 4 Stereo Inputs, 1 Output With Light Control
RM-MC51L Monitor Controller, 5.1 Stereo Inputs & Outputs With Light Control
RM-MCL Monitor Light Controller, 3 Button, TX-STANDBY-REH

2Reference Monitor Controllers User Handbook
2
RMMC1L MONITOR CONTROLLER
RMMC1L MONITOR CONTROLLER
2 RM-MC1L Monitor Controller
The RM-MC1L is a stereo unit with a single stereo balanced analogue input and output.
Useful in a production environment, the unit allows you to control the audio level to
external monitors and to DIM the audio, or CUT it completely with simple front panel
controls, or remote external inputs. It has a master volume control that adjusts the
attenuation on the output channels from 0dB down to -86dB. A CUT control mutes the
audio outputs when enabled, whilst a DIM control attenuates the audio output channels by
a pre-set amount from -2dB to -23dB. All of the buttons on the front panel are illuminated
by LEDs and the brightness can be changed to better suit the environment in which the
unit is used.
Remote
Port
Mains
Input
Left
Input
Right
Left
Output
Right
Global
Mains
Power
Micro
Controller
Light
Controls
Master
Volume
Control DIM Level
DIM
Control CUT Control
Fig 1-1: RM-MC1L Block Diagram

Reference Monitor Controllers User Handbook 3
2
RMMC1L MONITOR CONTROLLER
RMMC1L MONITOR CONTROLLER
Front Panel Controls & Indicators
Fig 1-2: RM-MC1L Monitor Controller, Single Stereo Input & Output With Light Control
Power LED
The power LED illuminates blue whilst power is present within the unit. If this indicator
is not on, the most likely reason is simply the absence of mains power, but under fault
conditions it may also indicate a ruptured mains fuse or a problem with the internal power
supply module.
Light Control Buttons
The three light control buttons; Transmit (TX), Standby and Rehearse (REH) provide remote
controls for the Sonifex SignalLED range of studio signs, or similar device. The optically
isolated drivers and the open-collector tally outputs associated with the TX and REH
buttons are activated whenever the button LEDs are illuminated.
The TX button can be pressed at any time, regardless of the state of the other two light
controller buttons. If the REH button is active when TX is pressed, REH will be deactivated. If
the Standby countdown is currently active when TX is pressed, the countdown is cancelled
and both the Standby and REH buttons are deactivated.
The Standby button controls a 2 minute countdown where the TX and REH buttons
and their associated remote outputs ash alternately. To start the 2 minute Standby
countdown, which can only be initiated if the TX control is currently inactive, simply press
the Standby button. The button will illuminate white to show the countdown is active and
the TX and REH buttons will ash red and blue respectively for 0.5 seconds each. After the
2 minutes has elapsed, the Standby and REH buttons and associated remote outputs are
deactivated while the TX remains on.
The Standby countdown can be cancelled at any time during the 2 minutes by pressing the
Standby button a second time. The TX button will be deactivated and the REH button will
return to the state it was in prior to the countdown starting.
The REH button can also be pressed at any time, regardless of the state of the other two
light controller buttons. If the TX button is active when REH is pressed, TX is deactivated.
Light
Control
Buttons
DIM
Button
CUT
Button
Master
Volume
Control
Power
LED

4Reference Monitor Controllers User Handbook
2RMMC1L MONITOR CONTROLLER
RMMC1L MONITOR CONTROLLER
If the Standby countdown is currently active, the countdown is cancelled and both the TX
and Standby buttons are deactivated.
DIM Button
The DIM button attenuates the audio level at the output by a pre-set amount from -2dB to
-23dB. The attenuation is applied after any level adjustment made by the master volume
control. The DIM level is set by adjusting the DIM Level potentiometer on the rear panel.
The DIM button has a latching action; press to activate, press again to deactivate. When the
DIM button is active it illuminates yellow.
The DIM button is also used to set the brightness of the LEDs that illuminate all of the
front panel buttons. When power is applied to the unit, all of the LEDs on the front panel
are illuminated for 1 second. During this period, pressing the DIM button will adjust the
LED brightness to one of the three available levels. Each time the button is pressed, the 1
second timeout period is restarted. When the required LED brightness level has been set,
simply allow the unit to return to normal operation.
An ‘active low’ remote input is available for remotely controlling the DIM operation.
CUT Button
The CUT button mutes the audio at the output. The CUT button has a latching action; press
to activate, press again to deactivate. When the CUT button is active it illuminates red.
An ‘active low’ remote input is available for remotely controlling the CUT operation.
Master Volume Control
The Master Volume Control adjusts the attenuation on all of the audio channels from 0dB
down to -86dB.

Reference Monitor Controllers User Handbook 5
2
RMMC1L MONITOR CONTROLLER
RMMC1L MONITOR CONTROLLER
Rear Panel Controls & Connectors
Fig 1-3: Rear View of RM-MC1L
DIM Level Adjustment Potentiometer
The DIM level potentiometer sets the attenuation applied to audio output when the DIM
button is active. Turn the potentiometer clockwise to decrease the DIM attenuation level
and clockwise to increase it (altering the audio level by -2dB to -23dB).
Audio Inputs
The single stereo audio input is via two XLR-3 pin socket connectors with the following pin
assignments:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
Audio Outputs
The single stereo audio output is via two XLR-3 pin plug connectors with the following pin
assignments:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
Remote Port
The Reference Monitor Controller’s remote port has 2 optically isolated drivers for the
Transmit (TX) and Rehearse (REH) controls that provide a direct control interface to the
Sonifex SignalLED illuminated studio signs. To drive a SignalLED studio sign from these
drivers, the Emitter connection would typically be connected to 0V and the collector
connection would be connected to one of the active low signalling inputs.
The remote port also provides 2 open-collector tally outputs for Transmit and Rehearse,
and 5 active low inputs to activate the Transmit, Rehearse, Standby, CUT and DIM controls.
XLR
Audio
Inputs
XLR
Audio
Outputs Remotes
Mains
Power
FuseDIM Level
Potentiometer

6Reference Monitor Controllers User Handbook
2RMMC1L MONITOR CONTROLLER
RMMC1L MONITOR CONTROLLER
The GPIO port connector is a 15-way female D-type with the following pin assignments:
Pin Function Description
1 Digital Ground 0V
2 TX Output Collector Collector of optically-isolated driver for TX
3 REH Output Collector Collector of optically-isolated driver for REH
4 REH Output Tally Open collector driver active when REH is active
5 STANDBY Remote Input Active low input to trigger STANDBY
6 CUT Remote Input Active low input to trigger CUT
7 Digital Ground 0V
8 Digital Ground 0V
9 TX Output Emitter Emitter of optically-isolated driver for TX
10 TX Output Tally Open collector driver active when TX is active
11 REH Output Emitter Emitter of optically-isolated driver for REH
12 TX Remote Input Active low input to trigger TX
13 REH Remote Input Active low input to trigger REH
14 DIM Remote Input Active low input to trigger DIM
15 Fused Power +12VDC @ 200mA max
Mains Power
Mains power is applied via a standard three-pin IEC male socket. Mains voltages between
85V and 264V AC at frequencies between 47 and 63Hz are accepted without adjustment.
A 1A, 5 x 20mm SB fuse is used. The Earth pin MUST be connected to ensure safety.

Reference Monitor Controllers User Handbook 7
RMMC4L MONITOR CONTROLLER
RMMC4L MONITOR CONTROLLER 3
3 RM-MC4L Monitor Controller
The RM-MC4L has four stereo balanced analogue inputs with a single stereo balanced
output. The RM-MC4L has the same master volume control, CUT, DIM, light control
functions, remote operation and adjustments as the RM-MC1L unit.
Fig 2-1: RM-MC4L Block Diagram
Mains
Input Remote Port
Global
Mains
Power
Micro
Controller
Light
Controls
Left
Input 4
Right
Left
Input 3
Right
Left
Input 2
Right
Left
Input 1
Right
Output
Right
Left
Master
Volume
Control
DIM
Level
DIM
Control CUT Control
Input
Select

8Reference Monitor Controllers User Handbook
3RMMC4L MONITOR CONTROLLER
RMMC4L MONITOR CONTROLLER
Front Panel Controls & Indicators
Fig 2-2: RM-MC4L Monitor Controller, 4 Stereo Inputs, 1 Stereo Output With Light Control
Input Select Buttons
The four input select buttons select which of the four stereo inputs is routed to the single
stereo output. The currently selected input button illuminates green and the unit defaults
to input 1 on power up.
For details of the other RM-MC4L Monitor Controller front panel controls and indicators,
please refer to the RM-MC1L description.
Rear Panel Controls & Connectors
Fig 2-3: Rear View of RM-MC4L
Audio Inputs
The RM-MC4L has four stereo audio inputs via eight XLR-3 pin socket connectors with the
following pin assignments:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
For details of the other RM-MC4L Monitor Controller rear panel controls and connectors,
please refer to the RM-MC1L description.
XLR
Audio
Inputs
XLR
Audio
Outputs Remotes
Mains
Power
DIM Level
Adjustment
Light
Control
Buttons
DIM
Button
CUT
Button
Master
Volume
Control
Power
LED
Input
Select
Buttons

Reference Monitor Controllers User Handbook 9
RMMC51L MONITOR CONTROLLER
RMMC51L MONITOR CONTROLLER 4
4 RM-MC51L Monitor Controller
The RM-MC51L is a monitor controller for surround sound applications with 6 balanced
analogue inputs and 6 balanced analogue outputs. It is used in situations where you
need to adjust the volume, or CUT, or DIM all of the speakers in a 5.1 surround system.
Alternatively, the unit can be used as a global volume control for 6 analogue outputs. The
RM-MC51L has the same master volume control, CUT, DIM and light control functions and
adjustments as the RM-MC1L unit.
Fig 4-1: RM-MC51LBlock Diagram
Remote
Port
Mains
Input
Global
Mains
Power
Micro
Controller
Light
Controls
1-L
Inputs Outputs
2-R
3-C
4-LFE
5-LS
6-RS
1-L
2-R
3-C
4-LFE
5-LS
6-RS
Master
Volume
Control DIM Level
DIM
Control CUT Control

10 Reference Monitor Controllers User Handbook
4
RMMC51L MONITOR CONTROLLER
RMMC51L MONITOR CONTROLLER
Front Panel Controls & Indicators
Fig 4-2: RM-MC51L Monitor Controller, 5.1 Stereo Inputs & Outputs With Light Control
For details of the RM-MC51L Monitor Controller front panel controls and indicators, please
refer to the RM-MC1L description.
Rear Panel Controls & Connectors
Fig 4-3: Rear View of RM-MC51L
Each audio input and output on the RM-MC51L is labeled with a channel number and a
corresponding 5.1 channel surround sound channel name.
Audio Inputs
The RM-MC51L has six audio inputs via XLR-3 pin socket connectors with following pin
assignments:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
Audio Outputs
The six audio outputs are via XLR-3 pin plug connectors with the following pin
assignments:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
For details of the other RM-MC51L Monitor Controller rear panel controls and connectors,
please refer to the RM-MC1L description.
XLR
Audio
Inputs Remotes
Mains
Power
Fuse
XLR
Audio
Outputs
Light
Control
Buttons
DIM
Button
CUT
Button
Master
Volume
Control
Power
LED
DIM Level
Adjustment