Extron electronic MPA 152 PLUS manual

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. A TTENTION: This symbol, I , when used on the product, is intended to alert the user of important operating [...]

FCC Class B Notice This equipment has been tested and found to comply with the limits for a ClassB digital device, pursuant to part15 of the FCC rules. These limits provide reasonable pr otection against harmful interfer ence in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not inst[...]

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 .extron.com .[...]

Contents Introduction ............................................................ 1 Important Safety Instructions .............................. 1 About the MP A 152 Plus .................................... 2 MP A 152 Plus Features ...................................... 2 Panels and Cabling .............................................. 4 MP A 15[...]

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 A152 Plus. This section provides the following inform[...]

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. It also featur es patented CDRS (Class D Ripple Suppression) technology that pr ovides a smooth, clean audio waveform and an improvement in signal fidelity over conventional Class D amp[...]

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 ENERGYST AR qualification. Extron patented CDRS - Class D Ripple Suppr ession — CDRS is an Extr on patented technology that provides a smooth, clean audio waveform and [...]

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 page7), and audio output (see page9). POWER 12V 0.7A MAX 4 Ω[...]

Power Receptacle DC Power Cord Captive Screw Connector MP A 152 Plus Amplier 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. Use of an unauthorized p[...]

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. The input can be stereo, using two RCA connectors, or[...]

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 . Wiring for r emote contr ol Options for remote contr ol include the Extr on VC50, VCM100AAP , VCM100MAAP , VCM?[...]

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 A152Plus unit only: • Ground ( ) to ground (G) • V ol/Mute to C • 10 V to V . 2. Use jumper wires to connect the C (V olume and Mute) pins of the fi[...]

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 8watts per channel. With a 4 ohm load, the amplifier produces up to 15watts per channel. See the attention (page 5) and note (page 5) for important [...]

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. BASS[...]

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 10kHz and above. NOTE: T urning the Bass or T reble potentiometers counterclo[...]

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. Resetting th[...]

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). The resistor is shown in the white box in figur[...]

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. Elevated operating ambient temperature — If the unit is installed in a closed or mul[...]

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 A152Plus. The other four holes anchor stand‑offs for the internal circuit boards; using them may damage th[...]

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