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Product Description

The HD-RA35U is a four input audio mixer amplifier for systems demanding the broadest range of features and the highest energy efficiency. Two output power amplifier zones, 35 watts (Zone 1) and 4 watts (Zone 2), are driven from high-efficiency Class D amplifier stages. The mixer and amplifier sections all normally shut down (standBy"sleep" mode) when audio is absent and automatically turn on when needed. A paging source is normally connected to Input 1. The Zone 1 amplifier output level for inputs 2, 3 and 4 is VCA controlled using various al RDL remote controls. This allows the user controls to be conveniently wall mounted without running audio to and from the remote control location. The Zone 1 output drives 4 ohm or 8 ohm speakers. The output impedance is switch-selectable on the rear panel. The Zone 2 amplifier output drives an 8 ohm speaker and/or 600 ohm telephone equipment. The HD-RA35U is engineered, tested and manufactured in the U.S.A. to strict energy conservation standards. The unit consumes less than 1W of mains power in standBy mode, and meets power amplifier efficiency specifications with analog-filtered Class-D digital output stages for both power amplifier output zones and for the 600 ohm output. The HD-RA35U features two mixers. The Zone 1 mixer is split between the front-panel (Paging Input 1 and tone controls) and a remote control (Inputs 2, 3 and 4) providing user level controls for the 35 watt amplifier output. The tone controls adjust the equalization at the Zone 1 amplifier output and can be switch selected on the rear panel to also adjust the equalization at the line-level output.

• Input 1 and 2 is switch-selectable MIC or LINE
• A gain trimmer is provided to set the input preamplifier to the optimum gain for the installation
• An RDL Dual-LED VU meter is provided on the rear panel to indicate proper gain adjustment for Inputs 1 and 2
• Correct input gain adjustment insures adequate mixer stage headroom
• Inputs 3 and 4 each provide unbalanced stereo RCA input jacks, summed to mono
• Phantom voltage (IEC standard 24 Vdc) is switch-selectable for the microphone input.
• The line input is transformer isolated and accepts balanced or unbalanced, high or low impedance audio sources.

• Weight: 5.6 lbs