RDL HD-MA 35A 35 Watt Mixer Amplifier with Power Supply - Manual

HD-MA35A
Congratulations on your selection of an RDL HD-Series High-Efficiency commercial mixer amplifier. The HD-MA35A is part of the world’s highest performance full-featured high-efficiency
mixer amplifier series for commercial installations. This product includes a studio quality microphone input stage, line-level transformer isolation, equalization, remote control capability and
integral analog compression coupled to a sonically pleasing analog-filtered high efficiency Zone 1 Class D output stage. The HD-Series mixer amplifiers are designed and manufactured in the
U.S.A. using the most advanced automated manufacturing and testing processes for years of reliable high performance and cost savings.
HD-MA35A 25/70/100 V
OUTPUT CONNECTIONS MUST BE MADE BY
PERSONS ADVISED OR SUPERVISED TO
AVOID DANGERS AND PREVENT RISKS
WHICH ELECTRICITY MAY CREATE.
USE ONLY THE TERMINAL BLOCK
SUPPLIED WITH THE MODULE.
USE ONLY THE POWER SUPPLY
SUPPLIED WITH THE MODULE.
INSTALLATION AND OPERATION
INTRODUCTION
INPUT WIRING
PRIORITY PAGING
INPUTS 2 & 3 INPUT 1
CONNECTIONS
Three inputs may be connected. Each input is available on the primary Zone 1 front-panel mixer and on the Zone 2 rear-panel mixer. If used, the paging source is usually connected to Input 1.
Connections are made on the rear panel. All connections are on detachable terminal blocks or connectors. The Zone 2 mixer, Input 1 MIC/LINE switch, ducking controls and assignments and phantom
voltage selector are also provided on the rear panel. The Zone 1 mixer, tone controls, indicators and power button are on the front panel.
Balanced MIC or LINE source connected
using a single-pair shielded audio cable Unbalanced MIC or LINE source connected using
a single-conductor shielded audio cable Balanced LINE signal from phone
PBX or audio transformer
INPUT 1
Connect a MIC or LINE source. This is normally a paging mic or the line-level paging output from a phone PBX. The line-level
input is transformer balanced (providing galvanic isolation) and may be connected balanced or unbalanced.
INPUTS 2 & 3
Connect a mono or stereo standard unbalanced -10 dBV audio
source to INPUTs 2 and/or 3. The two input jacks associated with
each input provide active summing of the left and right channels,
thereby preserving the stereo separation of the audio source.
MIC or LINE Gain
Set the Input Gain to MIC or LINE/TEL according to the input
signal connected.
VOX (VOICE-ACTIVATED PRIORITY)
If a paging signal is to automatically “duck” (fade down) other
audio inputs, feed a normal paging signal into INPUT 1 and adjust
the SENSITIVITY trimmer until the LED flashes regularly. Set the
SENSITIVITY trimmer fully CCW to disable the VOX function.
MANUAL PRIORITY
If a swich (such as a momentary paging mic push-to-talk switch) should “duck” (fade down) other audio inputs, connect the switch to the DUCK and Ground terminals.
INPUT DUCKING SELECTOR
Select one or both inputs (2 and/or 3) to be ducked when a paging priority is detected (VOX activated by audio signal on INPUT
1, or MANUAL activation by an external switch. Selected inputs are ducked only in Zone 1 (the primary amplified output). Set
the switch ON (switch up) to duck the input in Zone 1; set the switch OFF to prevent ducking. Inputs are not ducked in Zone 2.
PHANTOM VOLTAGE
If a condenser mic may be connected to INPUT 1, set the phantom voltage ON (switch up).
LEFT
STEREO SOURCE MONO SOURCE
RIGHT