• Consists of an ANS50
1
control unit, an ANS500M
microphone module, and a power supply
• Balanced input and output
• Unbalanced input and output
• Unbalanced stereo AUX inputs (summed mono)
• AUX inputs bypass gain control feature
• Remote defeat connections (to disable level boost)
• Automatically adjusts level of page announcements
• Run/Set mode switch
• ANS50
1
can be wired in between preamp and
power amp or to amplifier insert jacks
• Maximum boost; activity threshold; relative gain;
AUX input level; ramp speed; and ambient MIC
input threshold controls
• Supports up to four microphones wired in parallel
• Microphone wire run can be up to 2,000 feet with
no appreciable loss of signal
• Microphone module includes an adjustable mount-
ing bracket for precise positioning
• Powered by a
1
2V wall-mounted power supply
that operates from
1
20V AC
Features
Description
Specifications subject to change without notice.
© 2004 Bogen Communications, Inc.
Part No. 54-8022-0
1
A Printed in U.S.A. 0408
Ambient
Noise Sensor
System
Model ANS501
Control Unit
Model ANS500M
Microphone Module
The Bogen Ambient Noise Sensor system is designed to monitor continuously changing ambient noise levels
and electronically adjust the level of a page announcement and/or background music so intelligibility is
maintained. The system consists of the control module (Model ANS50
1
), a microphone module (ANS500M),
and a power supply.
The system ensures that page announcements and music are audible even during periods of high noise levels
by continuously monitoring the ambient noise level through a microphone module located in the subject area
and adjusting the paging signal level into the system’s amplifier.
