Bogen BUFEX Handleiding

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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

54-2 23-0 B1 1

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

Typical Connections

Buffered branch with BUFEX

volume control (24V supply for

this branch not shown)

Output Terminals

The Tip (T) and Ring (R) con-

nections are transformer-iso-

lated audio outputs with an

output impedance of 8Ω.

Connect these to the audio

inputs of the amplified speak-

ers for driving up to 150

speaker inputs.

100V J1

70V J2

25V J3

T&R J4

INPUT

SIGNAL

TYPE

Input Terminals

The input terminals can receive

dry audio (Tip and Ring), as

well as 00V, 70V, and 25V1

speaker signals depending on

the input voltage type jumper

setting.

Existing branch that needs buffer-

ing or audio to area requiring

local volume control (24V supply

for this branch not shown).

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.

24V

Power

Supply

Bypass Connection Examples

Bypass Terminals

The bypass terminals override the vol-

ume control knob, thereby allowing a full

volume page to be heard in the area

even if the front-mounted volume con-

trol knob is set to maximum attenuation.

Bypass can be triggered via a contact

closure or an open collector output.

Bypass Trim Control

The bypass trim control

sets the volume when the

unit bypasses the volume

control knob (maximum

attenuation of 2 dB).1

In the example below the AUX contacts of the UTI1are programmed to close when the

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.

UTI1

PCM-ZPM

PCM2000

In this configuration the Bypass feature

activates when the zone is being paged,

but allows volume control when the

zone is inactive and background music

is playing. See previous page for power

and output connections.

Product specificaties

Merk:	Bogen
Categorie:	Niet gecategoriseerd
Model:	BUFEX
Kleur van het product:	Zilver
Gewicht:	1360 g
Soort:	Draaivolumeregelaar
Afmetingen (B x D x H):	51 x 51 x 101 mm