Bogen AT10A Installation And Use Manual
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Attenuators For 25V/70V Speaker Line
Models AT10A and AT35A
Installation and Use Manual
These 10-step plus “off” speaker attenuators allow the volume of a network of 25V or 70V speakers to be controlled from
a remote location. The AT10A attenuator can handle speaker loads of up to 10W (max.) and the AT35A attenuator can
handle speaker loads of up to 35W (max.). The AT10A fits into a single gang electrical box and the AT35A into a double
gang electrical box. Volume reduction takes place in 3 dB increments except for the 2 lowest settings, which provide 6 dB
reduction increments. A speaker “off” (“0”) position is also provided.
Attenuator Wiring
© 2005 Bogen Communications, Inc.
All rights reserved.
Specifications subject to change without notice.
54-2126-01A 0501
Attenuator Settings
Speaker Installation
Red
Black
Green
Hot Lead
COM
Cable Shields
Cable to speakers
Speaker “+”
positive lead
Cable from amp or zone output
Wire Nuts (4)
Note: Cable shield is not
connected to the speaker -
the shield simply “floats.”
Speaker “-”
(negative) lead
Attenuator
STEP ATTENUATION
10 0 dB (Full Volume)
9 -3 dB
8 -6 dB
7 -9 dB
6 -12 dB
5 -15 dB
4 -18 dB
3 -21 dB
2 -27 dB
1 -33 dB
0 Speaker Off