User’s Manual MPA 122 Mini Power Amplifier www.extron.com Extron Electronics, USA Extron Electronics, Europe Extron Electronics, Asia Extron Electronics, Japan 1230 South Lewis Street Anaheim, CA 92805 USA 714.491.1500 Fax 714.491.1517 Beeldschermweg 6C 3821 AH Amersfoort The Netherlands +31.33.453.4040 Fax +31.33.453.4050 135 Joo Seng Road, #04-01 PM Industrial Building Singapore 368363 +65.6383.4400 Fax +65.6383.4664 Daisan DMJ Building 6F 3-9-1 Kudan Minami Chiyoda-ku, Tokyo 102-0074 Japan +81.
Precautions Safety Instructions • English This symbol is intended to alert the user of important operating and maintenance (servicing) instructions in the literature provided with the equipment. This symbol is intended to alert the user of the presence of uninsulated dangerous voltage within the product's enclosure that may present a risk of electric shock. Caution Read Instructions • Read and understand all safety and operating instructions before using the equipment.
Quick Start Guide — MPA 122 To install and set up an MPA 122 Mini Power Amplifier, follow these steps: Step 1 Turn all of the equipment off and disconnect it from the power source. Step 2 Mount the MPA 122 on a rack, under a desk, or on a projector, as illustrated below.
Quick Start Guide — MPA 122, cont’d Chapter 1 • Introduction .......................................................... 1-1 Step 6 Adjust the MPA 122 input level, bass and treble. a. If connecting to a projector, ensure that the volume on the device is at its lowest point, then adjust the level of the MPA 122 fully counterclockwise. LEVEL BASS TREBLE b. Set the projector volume to its maximum volume level (no sound should come out). c.
Table of Contents, cont’d MPA 122 1 Chapter One Introduction About this Manual About the MPA 122 Features iv MPA 122 • Table of Contents
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.
Introduction MPA 122 2 Chapter Two Installation and Operation Installation Overview Mounting the MPA 122 Rear Panel Features Front Panel Features Setting up the MPA 122 Amplifier 1-4 MPA 122 • Introduction
Installation and Operation Installation Overview Rack mounting To install and set up an MPA 122, follow these steps: 1 Turn all of the equipment off. Make sure that the input devices (DVD, VCR, PC, etc.), the MPA 122 unit, and the output devices are turned off and disconnected from their power source(s). 2 Mount the MPA 122 unit. See Mounting the MPA 122 below. 3 Attach the speakers and/or other output devices to the MPA 122. See Rear Panel Features later in this chapter for more information.
Installation and operation, cont’d 1U Universal Rack Shelf 1/2 Rack Width Front False Faceplate 1/4 Rack Width Front False Faceplate Both front false faceplates use 2 screws. Figure 2-3 — Under-desk mounting Projector mounting Use 2 mounting holes on opposite corners.
Installation and operation, cont’d On the side mounting plates, devices are typically mounted on the outside of the bracket. On the front mounting plate, devices are typically mounted on the inside of the bracket. Power input 1 To verify the polarity before connection, plug in the power supply with no load and check the output with a voltmeter. The front mounting plate is 1/4" taller than the side plates. This size helps ensure the accessibility of buttons or connectors. 3.
Installation and operation, cont’d 4 Balanced or unbalanced audio input connector — Marked “L” and “R”, this 3.5 mm captive screw input is for bare wire, balanced or unbalanced audio signals. 1 Power LED — A green LED lights to indicate that the unit is receiving power. 2 DIP switches — This 2-bank DIP switch controls the limiter (on and off) on one side, and allows for setting the Stereo and Dual Mono modes on the other.
Installation and operation, cont’d Remote connector wiring As shown below, Pin 1 is 10 VDC reference voltage. Pin 2 is volume control DC voltage; range is 0 to 10 V, where 0 V is mute and 10 V provides maximum volume. Pin 3 is ground.
Remote Operation Remote Control Options DVD S-video Audio RCA MPA 122 8 ohm Ceiling Speakers in Parallel PC VGA w/ Audio Cable 2 12 MPA UTS TP OU ms Oh 4/8 US C INPU TS RE R L TE MO R L V UTE 10 L/M VO Extron MPA 122 L WER PO R VCR Composite Audio RCA Mini Power Amplifier Variable Audio Output 1 EC OJ PR R TO 2 F OF 3 ON ME LU VO 4 CO NFI ComLink G ML 4 IP C 10 ME 100 LU VO VCM 3 Extron MLC 104 IP Controller TE MU P AA 2 Extron VCM 100 AAP Projector Remote Control Op
Specifications, Part Numbers, and Accessories Audio Audio output Frequency response ..................... 20 Hz to 20 kHz, ±1 dB @ 1 watt output THD + Noise ................................ 0.15% @ 1 kHz at nominal level (1 watt, 8 ohm load) S/N ................................................ >72 dB @ 20 Hz to 20 kHz at maximum output (unweighted) Stereo channel separation .......... >55 dB @ 1 kHz, >45 dB @ 20 kHz CMRR ............................................
Specifications, Part Numbers, and Accessories Listings .......................................... Compliances ................................. MTBF ............................................. Warranty ....................................... UL, CUL CE, FCC Class A, VCCI, AS/NZS, ICES 30,000 hours 3 years parts and labor All nominal levels are at ±10% Specifications are subject to change without notice.
Specifications, Part Numbers, Accessories, cont’d A-6 MPA 122 • Specifications, Part Numbers, and Accessories
