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Summary of Contents for Extron electronics MPA 401-70V
- Page 1 User Guide Audio MPA 401 Series Mini Power Amplifiers 68-1436-01 Rev. E 06 13...
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Page 2: Safety Instructions
Safety Instructions Safety Instructions • English Chinese Simplified （简体中文） 警告： 产品上的这个标志意在警告用户该产品机壳内有暴露的危险 WARNING: This symbol, , when used on the product, is intended to alert the user of the presence of uninsulated dangerous voltage within 电压， 有触电危险。 the product’s enclosure that may present a risk of electric shock. 注... - Page 3 “Extron Safety and Regulatory Compliance Guide” on the Extron website. Copyright © 2013 Extron Electronics. All rights reserved. Trademarks All trademarks mentioned in this guide are the properties of their respective owners. The following registered trademarks( ), registered service marks(...
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Page 4: Conventions Used In This Guide
Conventions Used in this Guide Notifications the following are used: ATTENTION: Attention indicates a situation that may damage or destroy the product or associated equipment. NOTE: A note draws attention to important information. Specifications Availability Product specifications are available on the Extron website, www.extron.com. -
Page 5: Table Of Contents
Contents Introduction ............ 1 Important Safety Instructions ......1 MPA 401-70V and MPA 401-100V Description ... 2 MPA 401-70V and MPA 401-100V Features ..3 Rear Panel and Cabling ........ 4 Rear Panel ............4 Power Input ............5 Audio Inputs ............6 Remote Input Port .......... - Page 6 MPA 401-70V and MPA 401-100V • Contents...
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Page 7: Introduction
Introduction This guide contains information about the Extron MPA 401-70V and MPA 401-100V mini power amplifiers with instructions for experienced installers on how to install, configure, and operate the equipment. Unless otherwise specified, references in this guide to the “amplifier,” “MPA,” or “MPA 401” relate to the features or operation of either amplifier. -
Page 8: Mpa 401-70V And Mpa 401-100V Description
Both amplifiers accept balanced or unbalanced, stereo or mono inputs and provide a summed mono output. The MPA 401-70V delivers up to 40 watts (rms) for a high-impedance, 70 V distributed sound system. The MPA 401-100V delivers up to 40 watts (rms) for a high-impedance, 100 V distributed sound system. -
Page 9: Mpa 401-70V And Mpa 401-100V Features
Quick-plug speaker outputs — Speaker output is on a 5 mm screw lock captive screw connector for quick installation. ENERGY STAR® qualified amplifiers — The MPA 401-70V and MPA 401-100V amplifiers are ENERGY STAR qualified amplifiers and energy efficient products that conserve energy and reduce costs. -
Page 10: Rear Panel And Cabling
NOTE: Control signal ground pins may be labelled , , or G. Audio ground pins may be labelled or . The wiring and function are the same, whichever way the product is labelled. MPA 401-70V and MPA 401-100V • Rear Panel and Cabling... -
Page 11: Power Input
NOTE: Do not tin the wires. Tinned wire does not hold its shape and can become loose over time. MPA 401-70V and MPA 401-100V • Rear Panel and Cabling... -
Page 12: Audio Inputs
(see attention and the note page 6 for important information about connecting wires to captive Ring Sleeve Sleeve screw connectors). Unbalanced Mono Input Balanced Mono Input MPA 401-70V and MPA 401-100V • Rear Panel and Cabling... -
Page 13: Remote Input Port
0 V giving full attenuation and 10 V giving maximum volume. It can also be used for remote control muting. Sound is muted while the mute pin is shorted to ground. Pin 3 is ground. • NOTE: All nominal levels are at ± 10%. MPA 401-70V and MPA 401-100V • Rear Panel and Cabling... -
Page 14: Controlling Multiple Amplifiers With One Volume Controller
Regulating Multiple Amplifiers with a Single Volume Controller NOTE: The 10V pin of the volume controller connects to the first MPA 401 only. There are no jumper wires linking it to subsequent amplifiers. MPA 401-70V and MPA 401-100V • Rear Panel and Cabling... -
Page 15: Speaker Connections
6 for important information about connecting wires to captive screw connectors. ATTENTION: Do not ground or short the speaker outputs as this will damage the amplifier. MPA 401-70V and MPA 401-100V • Rear Panel and Cabling... -
Page 16: Setup And Operation
It lights amber when the unit is on standby. Potentiometers — These three front panel potentiometers are used to optimize level, bass, and treble settings (see the following pages for further details). MPA 401-70V and MPA 401-100V • Setup and Operation... -
Page 17: Setting Input Level
NOTE: Turning the bass or treble potentiometers counterclockwise will decrease the output at the specified frequencies. Turning the potentiometers clockwise will increase the output. When the potentiometer is at the center detent, flat response is achieved. MPA 401-70V and MPA 401-100V • Setup and Operation... -
Page 18: Remote Control Options
In the above example, a MediaLink controller adjusts the audio volume via a network connection. Follow the instructions in the product guide. MPA 401-70V and MPA 401-100V • Setup and Operation... -
Page 19: Troubleshooting
Amplifier Enters Standby Mode Too Early Power LED Problem Description Problem Solution Color The input signal may be too weak. Raise Green or Enters standby mode • the input level. Amber early. MPA 401-70V and MPA 401-100V • Setup and Operation... -
Page 20: Reference Material
Mounting the MPA 401. Mounting Plenum Placement The MPA 401-70V and MPA 401-100V amplifiers meet UL 2043 requirements for heat and smoke release. They can be installed in the ceiling, out of sight, with reduced risk of theft. ATTENTION: Although the amplifier is plenum rated, the power supply provided with it is not. -
Page 21: Under-Desk, Through-Desk, And Projector Mounting
Under-desk, Through-desk, and Projector Mounting The amplifier can be mounted under or through a desk, or above a projector. For the appropriate mounting kit, see www.extron.com. Follow the instructions provided with each kit. MPA 401-70V and MPA 401-100V • Reference Material... -
Page 22: Extron Warranty
Extron Electronics makes no further warranties either expressed or implied with respect to the product and its quality, performance, merchantability, or fitness for any particular use. In no event will Extron Electronics be liable for direct, indirect, or consequential damages resulting from any defect in this product even if Extron Electronics has been advised of such damage.