Bogen ANS501 Specsheet
• Consists of an ANS501 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
• ANS501 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 mounting bracket for precise positioning
• Powered by a 12V wall-mounted power supply
that operates from 120V AC
Features
Description
Specifications subject to change without notice.
© 2004 Bogen Communications, Inc.
Part No. 54-8022-01A 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 ANS501), 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.
The Ambient Noise Sensor system shall consist of a
Bogen Model ANS501 control module, a Bogen
Model ANS500M microphone module, and a
12V/0.4A wall-mounted power supply. The system
shall be designed to electronically adjust the level of
a page announcement in an area where ambient noise
levels are continuously changing.
The system shall continuously monitor the ambient
noise level through the microphone module located
in the subject area and change page signal levels to
make pages audible over noise.
Up to four (4) microphone modules may be wired in
parallel to monitor larger locations. The wire run
between control unit and microphone module, when
composed of 2-conductor AWG20, shall be able to
reach a length of 2,000 feet with no appreciable loss
of signal strength.
All wiring connections to the control module shall be
made via pluggable screw terminals or RCA jacks.
The control module shall include controls for
maximum boost;activity threshold; relative gain;AUX
input level; ramp speed; and ambient MIC input
threshold.
The control module shall include two unbalanced
RCA inputs with mono summing stereo; balanced
and unbalanced inputs; balanced and unbalanced outputs; a sensor MIC input; and a defeat input.
The control module shall include a mode switch and
power and status LED’s.
The control module is designed to be wall-mounted.
The microphone module shall include an adjustable
mounting bracket for precise positioning.
The system shall be powered by a 12V power supply,
which shall operate from 120V AC. Current draw
shall not exceed 400 mA.
Dimensions of the control unit shall be 5
1
/4" W x 3"
H x 1
1
/4" D. Dimensions of the microphone module
shall be 2" W x 2
1
/8" H x 7/8" D.
Architect and
Engineer
Specifications
50 Spring Street, Ramsey,NJ 07446, U.S.A.
201-934-8500 FAX: 201-934-9832
Web Site: www.bogen.com
Technical
Specifications
Gain (Boost): 0 dB to 22 dB (± 1 dB)
Frequency Response: 5 Hz to 80 kHz (+0 / -3 dB)
S/N (20 Hz - 20 kHz): -96 dBV
Distortion: <0.007%
Input Impedance: Aux Input: Unbalanced 10 k-ohms
Unbalanced Input: 20 k-ohms
Balanced Input: 20 k-ohms
Output Impedance: Unbalanced Output: 300 ohms
Balanced Output: 600 ohms
Gain Ramp Speed: 1 dB/s to 20 dB/s
Power : 12V AC/0.4A
Controls: Maximum Boost, Ramp Speed, Activity Threshold,Ambient Threshold,
Aux Level, & Relative Gain
Connector: RCA & pluggable screw terminals
Product Weight: 12 oz. (ANS501); 4 oz. (ANS500M)
Dimensions: 5
1
/4" W x 3" H x 11/4" D (ANS501); 2" W x 2
1
/8" H x 7/8" D (ANS500M)
Indicators: Bi-Color Status (Amber/Green); Power (Green)
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