Instruction/ maintenance manual of the product MPA 152 PLUS Extron electronic
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68-1320-03 Rev. A 11 13 ENERGY STAR ® Qualified Stereo Mini Power Amplifier MPA 152 Plus User Guide Audio.
Safety Instructions • English WARNING: This symbol, D , when used on the product, is intended to alert the user of the presence of uninsulated danger ous voltage within the product’ s enclosure that may pr esent a risk of electric shock.
FCC Class B Notice This equipment has been tested and found to comply with the limits for a ClassB digital device, pursuant to part15 of the FCC rules. These limits provide reasonable pr otection against harmful interfer ence in a residential installation.
Conventions Used in this Guide Notifications the following are used: A TTENTION: Attention indicates a situation that may damage or destroy the pr oduct or associated equipment. NOTE: A note draws attention to important information. Specifications A vailability Product specifications ar e available on the Extr on website, www .
Contents Introduction ............................................................ 1 Important Safety Instructions .............................. 1 About the MP A 152 Plus .................................... 2 MP A 152 Plus Features .................
MP A 152 Plus • Contents vi.
Intr oduction This manual contains information about the Extron MP A 152 Plus mini power amplifier with instructions for experienced installers on how to install, configure, and operate the equipment. Unless otherwise specified, in this manual “amplifier” or “MP A” refer to the MP A152 Plus.
About the MP A 152 Plus The MP A 152 Plus is an ENERGY ST AR qualified amplifier with an Extron exclusive, highly efficient, advanced Class D amplifier design.
Defeatable auto power -down timer for 24/7 applications — Ensures that the amplifier is always active for 24/7 operation in critical applications, while still retaining the ENERGYST AR qualification.
Panels and Cabling This section discusses the MP A 152 Plus rear panel features and cabling. MP A 152 Plus Rear Panel Features The rear panel of the MP A 152 Plus (shown in figure 2 below) allows the user to connect power (see below), audio input (see page 6), remote contr ol (see page7), and audio output (see page9).
Power Receptacle DC Power Cord Captive Screw Connector MP A 152 Plus Amplier DC Power Outputs DO NOT USE AC Power Cord Tie Wrap Captive Scr ew Connector Power Supply Output Co rd PS 1220 Power Supply POWER 12V 0.7A MAX Figure 3. Power Connector A TTENTION: • Always use a power supply supplied by or specified by Extron.
Audio Inputs Use the rear panel r eceptacles (see figur e 4) to connect audio sources to the amplifier . W ire the connectors as shown below . L R L R INPUTS 2 4 3 Figure 4. Audio Inputs b RCA unbalanced stereo input connectors — These receptacles accept unbalanced, line level audio signals.
Remote Control e Remote input connector — This 3‑pin, captive screw port allows an audio controller to contr ol volume and mute levels r emotely . See Remote Control Options on page 11 if using a MediaLink contr oller .
T o regulate multiple amplifiers with a single volume controller , follow these instructions: 1. Attach all three pins of the volume contr oller to the corr esponding pins on the first MP A152Plus unit only: • Ground ( ) to ground (G) • V ol/Mute to C • 10 V to V .
Audio Output f Speaker receptacle — This 4‑pole, 5 mm scr ew lock captive screw r eceptacle is used to connect the amplifier to the speakers. With an 8 ohm load, the amplifier produces up to 8watts per channel. With a 4 ohm load, the amplifier produces up to 15watts per channel.
Setup and Operation This section discusses: • Front Panel Featur es and Operation • Remote Control Options • Defeating the Auto Power -down Timer • T roubleshooting Fr ont Panel Featur es and Operation This section describes how configure the MP A 152 Plus, using the front panel contr ols and how to set up the remote contr ol options.
Setting Bass and T reble Adjust the MP A 152 Plus bass and treble as follows: 1. Use the Bass potentiometer to increase or decr ease the bass shelving ±10 dB at 80 Hz and below . 2. Use the T reble potentiometer to incr ease or decr ease the treble shelving ±10 dB at 10kHz and above.
Defeating the Auto Power -down Timer The auto power ‑down timer determines whether or not the amplifier enters standby mode. The amplifier powers down if the input signal remains below the input signal detection threshold for about 25 minutes. The timer resets whenever the input signal exceeds the input signal detection thr eshold.
Stereo to Dual Mono To ggle Switch Level Potentiometer Resistor R42 Figure 10. Front View , Showing the Location of Resistor R42 4. Identify resistor R42 at the fr ont of the bottom cir cuit board between the Ster eo to Dual Mono toggle switch (to the left) and the Level potentiometer (to the right).
Mounting This section provides information about the mounting options for the MP A 152 Plus. Rack Mounting UL Guidelines for Rack Mounting The following Underwriters Laboratories (UL) guidelines are r elevant to the safe installation of this product in a rack: 1.
Rack Mounting Procedur e The unit can be mounted on a compatible rack system (optional). Follow the instructions provided with the shelf accessories. A TTENTION: Use only the two holes indicated in the diagram below for mounting the MP A152Plus.
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An important point after buying a device Extron electronic MPA 152 PLUS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Extron electronic MPA 152 PLUS yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Extron electronic MPA 152 PLUS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Extron electronic MPA 152 PLUS you will learn all the available features of the product, as well as information on its operation. The information that you get Extron electronic MPA 152 PLUS will certainly help you make a decision on the purchase.
If you already are a holder of Extron electronic MPA 152 PLUS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Extron electronic MPA 152 PLUS.
However, one of the most important roles played by the user manual is to help in solving problems with Extron electronic MPA 152 PLUS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Extron electronic MPA 152 PLUS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
