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BUFEX

Attenuator,Buffer,and Speaker Expander

for Self-Amplified Speakers

Features

•Can drive up to 50 self-amplified speaker inputs1

•100V,70V,25V,and page port level selectable inputs

•Bypass trim control for emergency paging

•Continuously variable attenuator

54-223-0B11

Specifications subject to change without notice.

0511

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 50 self-ampli-1

fied speakers.It allows speaker system expansion for existing 00V,70V,or 25V central amplifier1

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 2 dB of attenuation.The BUFEX fits into a sin-1

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

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