RDL HD-MA 35A 35 Watt Mixer Amplifier with Power Supply - Manual (Page 3)

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
891-3405A
REMOTE CONTROL FOR ZONE 1 AMPLIFIER OUTPUT
ZONE 2
EXTERNAL MODULES
ADDING ZONES OPERATION
The Zone 2 mixer operates from the same 3 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. Two
Zone 2 outputs are provided. The 600 Ohm output is transformer isolated (providing galvanic isolation) to drive a phone PBX paging
input or the input of another power amplifier. The 8 Ohm output drives an 8 ohm speaker with up to 2 W RMS.
MODULE MOUNTING AREA
This area is reserved for mounting RDL STICK-ON
or TX-Series modules. The example shows a mixer
module that provides additional inputs to the mixer
amplifier. Other possibilities include equalizers, signal
detectors, crossovers or processors.
MODULE POWER
24 Vdc, 100 mA is available to power external modules.
Balanced LINE signal feeds phone PBX
Connect an 8 Ohm speaker or multiple
speakers configured to present an 8 Ohm
load to the amplifier.
SIGNAL PRESENT 1 - 3 The green LED glows when audio is present at the input. The indication is not affected by the setting of the mixer level control.
MIXER LEVEL 1 - 3
Adjust each level control for the desired output level. If a master remote control is connected, it will adjust the final
mixer output level feeding the Zone 1 amplifier.
POWER INDICATOR
Glows dimly when unit is in standby (off)
mode; glows bright when amplifier is on.
POWER BUTTON
Latching pushbutton turns the amplifier
ON or off (STANDBY).
TONE CONTROLS
Adjust BASS and TREBLE as desired.
COMPRESSION INDICATOR
LED flashes when audio compressor is
acting on the amplified audio.
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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.
MASTER VCA REMOTE CTRL
Connect the VCA terminals directly to an RDL remote control. (Examples providing a single volume control location: D SERIES-RLC10K or D SERIES-RLC10KM with pushbutton muting) Other RDL remote controls
are available to provide multiple control locations. Visit rdlnet.com for details. The VCA may be controlled by an external 10 kOhm linear pot or from other equipment control outputs that provide 0 to 10Vdc.
CCW
CW
External 10k Pot
(Linear Taper)
0 to 10 V
Ground Reference
External Control
0 to 10 V
3 Mic/Line Inputs
Wiring may be unshielded or single-pair shielded (connect the shield between the ground terminals). Shielded wiring is recommended for installations in
environments where radio frequency emissions may be present.
INPUTS
Adjust for desired
output level
LINE OUTPUT
Transformer isolated
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
is not controlled by the master VCA remote control so
each additional zone may have its own master level
control. The LINE OUTPUT provides “flat” audio without
equalization by the front-panel tone controls. The LINE
OUTPUT may also be used to feed recording equipment or
an audio distribution amplifier.
ZONE 1 OUTPUT CONNECTIONS