Data Sheet

Attenuators with
Bypass for 25V/70V
Speaker Line
Models ATP10, ATP35
The ATP-Series of attenuators allows the output level of a network of 25V or 70V speakers to be controlled
from a wall-mounted volume control, without affecting overall amplifier volume settings. A bypass function
overrides the volume control knob setting when activated by 9V to 30V DC. Applying 9V to 30V DC between
pins labeled D+ and D- bypasses the volume control function and provides full volume audio to the speak-
ers. The ATP-Series attenuators feature etched faceplate markings.
• Adjusts loudspeaker output levels on 25V and
70V systems
• Bypass function allows important and emergency
announcements to be heard at the highest level
even if local attenuator volume is set low or off
• 2 models control up to 10-watt and 35-watt
speaker systems
• 10 attenuation steps and an off setting
• Attenuation in 3 dB increments except for two
lowest settings, which provide 6 dB reduction
increments
• Mounts in standard electrical box, single (ATP10)
or double (ATP35)
• Convenient pluggable screw terminal connections
Features
Description
Architect
& Engineer
Specifications
The speaker line attenuator shall be a Bogen model
(specify ATP10 or ATP35), and shall permit setting
the output level at loudspeakers on a 25V or 70V line
without altering the amplifier volume setting. The
attenuator shall also have the ability to override the
volume control setting when activated by 9V to 30V
DC so that important and emergency messages will
be heard at all speaker locations. The attenuator
shall provide a choice of 10 stops and an “off” posi-
tion, and shall be capable of controlling up to 10-/35-
watt speaker systems. The attenuator shall measure
(2-3/4" W x 4-1/2" H x 2-5/8" D for ATP10 or 4-5/8"
W x 4-5/8" H x 3" D for ATP35), weigh (13 oz. for
ATP10 or 14 oz. for ATP35), and feature etched face-
plate markings.
Technical
Specifications
Model:
Speaker Types:
Bypass Control:
Power Rating:
Gang Box:
Dimensions:
Product Weight:
ATP10
25V & 70V
9V - 30V DC @ 22mA max.
10 Watts
Single
2-3/4" W x 4-1/2" H x 2-5/8" D
13 oz.
ATP35
25V & 70V
9V - 30V DC @ 22mA max.
35 Watts
Dual
4-5/8" W x 4-5/8" H x 3" D
14 oz.
50 Spring Street, Ramsey, NJ 07446, U.S.A.
Tel.: [phone] • Fax: [phone]
www.bogen.com