Extron Electronics MPA 122 User Guide - Manual (Page 6)

MPA 122 • Introduction MPA 122 • Introduction
Introduction
About this Manual
This manual contains information about the Extron MPA 122
Mini Power Amplifier with instructions on how to mount and
operate the unit.
About the MPA 122
The Extron MPA 122 Mini Power Amplifier provides 2-channel
power amplification for speaker systems in applications
requiring compact, economical audio solutions. The MPA 122
delivers 11 watts (rms) per channel into 4 ohms and
7 watts (rms) into 8 ohms. It is optimized for driving four 8
ohm ceiling speakers, two in parallel, per channel.
The MPA 122 accepts balanced and unbalanced stereo inputs,
and provides outputs as stereo or dual mono audio signals.
Front panel controls are provided for input level, bass, and
treble. The front panel also features switches for stereo/dual
mono operation and a limiter switch which automatically
reduces the gain to prevent distortion (amplifier clipping). The
MPA 122 features remote control capability for volume
adjustment and muting. As part of the VersaTools
® line, the
MPA 122 can be housed in a 1U, quarter rack width metal
enclosure, mounted under a desk, or mounted on a projector.
Features
Digital audio amplifier — The MPA 122 features improved,
class D technology for high efficiency and low distortion.
Compact size — The MPA 122 is housed in a 1U high, 1/4 rack
width, 3" deep, metal enclosure, making this amplifier a
powerful product for many unique applications.
Balanced and unbalanced audio inputs — Balanced or
unbalanced stereo input is on a captive screw connector.
The MPA 122 also includes RCA connectors and a 3.5 mm
stereo mini jack for unbalanced input.
Quick plug speaker outputs — Speaker output is on a captive
screw connector for quick installation.
Front panel controls — Input level, bass, and treble can be
easily adjusted from the front panel.
Limiter switch — The limiter switch prevents output distortion
(clipping) and potential damage to speakers.
Stereo/dual mono switch — Fits applications for both stereo
program speakers or mono ceiling speakers.
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Volume and mute remote control — The MPA 122 can be
remotely controlled for volume adjustment and muting
via connectivity to a rear panel, captive screw “Remote”
input connector.
Flexible mounting options — The MPA 122 can be mounted on
a rack, projector, or under furniture.
External international power supply — The autoswitchable,
12 VDC, 3 A external power supply provides worldwide
power compatibility (part #70-380-01).
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