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White rectangular wall-mounted attenuator with rotary volume knob, 4.8 inches square by 2.5 inches deep

Bogen Communications

Bogen Communications BG-AT35A 35 W attenuator

SKU CH-XSNA-WFDRD MPN BG-AT35A

A wall-mounted attenuator controls 25 V or 70 V speaker levels in 3 dB steps up to 35 W across ten positions plus off

  • Controls speaker output locally without changing amplifier settings
  • Handles up to 35 W speaker loads on 25 V or 70 V lines
  • Ten volume steps plus off in 3 dB increments
  • Rugged wall-mount design fits standard 4.8 in boxes
  • Two-year limited warranty included

35 W wall-mount attenuator for 25 V

The Bogen BG-AT35A provides local volume control for distributed audio systems without changing the main amplifier level. It handles speaker loads up to 35 W across constant-voltage networks. Installers use it in commercial paging and background-music zones where independent adjustment is required.

Passive operation with no added noise or power draw

The unit inserts directly into the speaker circuit and attenuates in 3 dB steps down to the two lowest positions, which step by 6 dB. Ten active levels plus an off position give predictable level changes. Because it is passive, it adds no self-noise and draws no operating current.

Rugged wall-mount chassis measuring 4.8 by 4.8

The steel enclosure mounts on a standard electrical box and withstands daily adjustment in public areas. Screw terminals accept the speaker wiring for both 25 V and 70 V distributions. A two-year limited warranty covers the attenuator against defects.

Highlights

  • Controls speaker output locally without changing amplifier settings
  • Handles up to 35 W speaker loads on 25 V or 70 V lines
  • Ten volume steps plus off in 3 dB increments
  • Rugged wall-mount design fits standard 4.8 in boxes
  • Two-year limited warranty included

Specifications

BrandBogen
ModelBG-AT35A

Questions about this item

How do I wire the BG-AT35A into a 70 V speaker line, and what step is often missed?

Connect the attenuator in series with the speaker load on the 25 V or 70 V line; the step often missed is setting the 10-level control to the desired attenuation before securing the wall plate.

What part of the BG-AT35A will need replacement after extended use?

The internal resistor network that creates the 3 dB and 6 dB steps can drift over time; if volume steps become uneven, the attenuator itself should be replaced.

What power limit stops me from adding more speakers to this 35 W attenuator?

The unit handles speaker loads up to 35 W total; exceeding that rating will cause overheating and signal distortion before any other limit appears.

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