Extron electronics A-4 User Manual download pdf (Page 6)

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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