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BUFEX
Attenuator, Buffer, and Speaker Expander
for Self-Amplified Speakers
Features
•
Can drive up to 150 self-amplified speaker inputs
•
100V, 70V, 25V, and page port level selectable inputs
•
Bypass trim control for emergency paging
•
Continuously variable attenuator
Description
The BUFEX is a continuously variable speaker attenuator that allows the volume of a network of
speakers to be remotely controlled.The BUFEX provides output buffering for up to 150 self-ampli-
fied speakers. It allows speaker system expansion for existing 100V, 70V, or 25V central amplifier
systems.
The unit includes a bypass function for overriding the volume control knob setting when
activated by a contact closure or open collector output. A bypass trim control adjusts the
volume when in bypass mode with a maximum of 12 dB of attenuation.The BUFEX fits into a sin-
gle gang electrical box.
Installation
1. Make all the necessary electrical connections and jumper selection before installing unit.
2. Mount the unit to the electrical box using the 2 faceplate screws provided.
Package Contents
(1) Installation and Use Manual
(1) BUFEX Unit
(2) Faceplate Screws
© 2004 Bogen Communications, Inc.
54-2123-01B
Specifications subject to change without notice.
0511
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Summary of Contents for Bogen BUFEX
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Page 1: Package Contents
The unit includes a bypass function for overriding the volume control knob setting when activated by a contact closure or open collector output. A bypass trim control adjusts the volume when in bypass mode with a maximum of 12 dB of attenuation.The BUFEX fits into a sin- gle gang electrical box. - Page 2 24V DC Terminals The BUFEX power consumption is 1CU (50 mA) @ 24V DC.Terminals are marked "+" and "-", but will func- tion properly even if polarity connec- tions are reversed.
- Page 3 UTI1’s Override (Emergency) input becomes active.The AUX contacts trigger the Bypass fea- ture of the BUFEX allowing a full volume page to be heard regardless of the voume setting of the BUFEX. See previous page for power and output wiring.
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Page 4: Block Diagram
Limited Warranty The BUFEX is warranted to be free from defects in material or workmanship for two (2) years from the date of sale to the original purchaser. Any part of the product covered by this warranty that, with normal installation and use, becomes defective will be repaired or replaced by Bogen, at our option, provided the product is shipped insured and prepaid to: Bogen Factory Service Department, 50 Spring Street, Ramsey, NJ 07446, USA.
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