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REMOTE CONTROL FOR ZONE 1 MIXER INPUTS 2, 3 AND 4

ZONE 2

EFFECTS LOOP

AUTOMATIC SLEEP MODE

ADDING ZONES

OPERATION

External 0 to 10 V  Control

Pin 1 

0 to 10 V for Input 2

Pin 3 

0 to 10 V for Input 3

Pin 5 

0 to 10 V for Input 4

Pin 8 

Ground Reference

Input 4 External 10k Ω Pot.

Input 3 External 10k Ω Pot.

Input 2 External 10k Ω Pot.

Upon loss of audio at all inputs, a timer starts.  At the completion of the timing interval, the mixer amplifier enters the standby mode.  All circuits not needed to detect audio presence are shut 

off.  When audio is detected, all circuits turn on and wait for a loss of audio to restart the timing interval.  The timer may be disabled if required by system specifications.

The Zone 2 mixer operates from the same 4 inputs as the front-panel Zone 1 mixer.  Ducking assignments do not affect the signals in Zone 2.  Each input source should be adjusted to the 

desired output level.  Turn down unused inputs to remove them from the mix.  Three Zone 2 outputs are provided.  The LINE OUTPUT is balanced and may be used to feed the input of an other 

power amplifier. The 600 Ohm output is transformer isolated (providing galvanic isolation) to drive a phone PBX paging input.  The 8 Ohm output drives an 8 Ohm speaker with up to 4 W RMS.

REMOTE MIXING CONTROL

Connect this RJ45 jack directly to an RDL 

remote control. (Examples: D/DS-RC3 or 

D/DS-RC3M)  The RJ45 wiring may be 

“broken out” for connection to external 

OEM 0 to 10 Vdc controls or 10k Ohm 

potentiometers.

WIRING “Break-out”

LINE OUTPUT

Active balanced

INPUTS

Adjust for desired 

output level

10 Minutes

40 Minutes

70 Minutes

100 Minutes

20 Minutes

50 Minutes

80 Minutes

110 Minutes

Disable (mixer-amplifier remains 
ON, does not enter standy mode)

30 Minutes

60 Minutes

90 Minutes

120 Minutes

PIN 1, Mixer Input 2 VCA control

PIN 2

PIN 3, Mixer Input 3 VCA control

PIN 4

PIN 5, Mixer Input 4 VCA control

PIN 6

PIN 7, +10 Vdc

PIN 8, Ground Ref.

RJ45 Control Wiring

PIN 5, VCA control

PIN 7, +10 Vdc

PIN 8, Ground Ref.

CCW

CW

PIN 3, VCA control

PIN 7, +10 Vdc

PIN 8, Ground Ref.

CCW

CW

PIN 1, VCA control

PIN 7, +10 Vdc

PIN 8, Ground Ref.

CCW

CW

EFFECTS LOOP CONNECT SWITCH

This switch is normally left in the ON (up) 

position when the effects loop is not used.  

The switch connects the preamp output from 

the Zone 1 mixer directly to the input of the 

Zone power amp stage.  Set this switch OFF 

(down) to insert external processing.

MODULE MOUNTING AREA

This area is reserved for mounting RDL STICK-ON 

or TX-Series modules. This example shows a 

high-pass filter to protect horn loudspeakers from 

bass overload. Other effects possibilities include 

equalizers, mixers, crossovers or processors.

MODULE POWER

24 Vdc, 100 mA is available to power external modules.

Balanced LINE signal feeds phone PBX

Note: Remote control labels for 
INPUTs 1, 2 and 3 correspond to 
mixer-amplifier inputs 2, 3 and 4 
respectively.

Connect an 8 Ohm speaker or multiple 
speakers configured to present an 8 Ohm 
load to the amplifier.

EQUALIZATION

Set the switch to 

EQUALIZED (in) if the 

front-panel tone controls 

should affect the line 

output; Set to FLAT (out) 

if the tone controls should 

not affect the line output.

SIGNAL PRESENT

  

The green LED glows when audio is present at INPUT 1. The indication is not affected by the setting of the mixer level control.

MIXER LEVEL 1

Adjust the level control for the desired output level.  INPUT 1 is usually the paging signal.  The level for this source is 

set on the front panel and is unaffected by the remote control.  Inputs 2, 3 and 4 are adjusted using the level controls 

on the remote control.  Note:  Multiple compatible RDL remote controls are available separately. 

POWER INDICATOR

Glows dimly when unit is powered in 

standby (sleep) mode; glows bright when 

amplifier is on; flashes during power-up. 

POWER BUTTON

Momentary pushbutton toggles the 

amplifier between ON and STANDBY. 

TONE CONTROLS

Adjust BASS and TREBLE as desired. 

COMPRESSION INDICATOR

LED flashes when audio compressor is 

acting on the amplified audio. 

ADDITIONAL ZONE AMPLIFIERS

Connect the LINE OUTPUT to the line input of one or 

multiple additional RDL amplifiers to permit the Zone 1 

mixer to feed other zones.  The LINE OUTPUT may be 

set to provide “flat” audio or to allow equalization by the 

front-panel tone controls. The LINE OUTPUT may also be 

used to feed recording equipment or an audio distribution 

amplifier.

RDL

 659 6th Street 

 Prescott, AZ 

 USA  86301 

 Sales: 800-281-2683 

 928-443-9391 

 Tech Support: 800-933-1780 

 928-778-3554 

 RDL Europe Sales & Support: (31) 20-6238-983 

  

www.rdlnet.com

Copyright © 2011 Radio Design Labs, Inc.  RDL, Radio Design Labs and the RDL logo are registered trademarks of Radio Design Labs, Inc.  Data reflects product at publication time, subject to change without notice. “Made in USA” applies to all HD products except power supplies. Other trademarks, if any, are the property of their respective owners.

891-3355A

ZONE 1 OUTPUT CONNECTIONS

Unplug the power supply and remove the output terminal security cover. Connect constant voltage speakers to a single output voltage tap. Do not connect speakers with dissimilar voltages to multiple 

output taps.  Total connected load must not exceed 35 W. Upon completion of the output terminal block wiring, re-install the cover over the terminal block prior to plugging in the power supply.

Multiple 25 V speakers

Multiple 70 V speakers

Multiple 100 V speakers

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