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4
MIX-4 Installation and Operation Manual
OVERVIEW
Product Overview
The Broadcast Tools Mix-4 is a four-channel stereo line level mixer with a profes-
sional microphone input, along with a stereo line output and mix-minus monaural
output to drive a telephone hybrid. The Mix-4 mixer is ideally suited for the typical
broadcast studio or any similar applications. It features four high impedance stereo
line level mixing inputs, which accept balanced or unbalanced stereo sources. Each
input is equipped with rotary level controls, along with on/off switches and LED
indicators. Input one may be configured as either a stereo line input or a microphone
input with or without 15V phantom power via rear panel switches. The microphone
input uses a high-performance pre-amp from THAT Corporation. Inputs one through
four feed the balanced output, while inputs one, two, and three feed the balanced
mono mix-minus output, which allows input four to accept caller audio from a tele-
phone hybrid. Channel audio switching is performed by professional level electron-
ic analog switches. The inputs and outputs are supplied with removable screw ter-
minal block connectors, while the microphone input is a female XLR jack. Each
unit may be set on a desktop, mounted on a wall or rack-mounted with the optional
RA-1 rack shelf for mounting up to three units in 1-RU.
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