User’s Manual MPA 181T 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 Kyodo Building 16 Ichibancho Chiyoda-ku, Tokyo 102-0082 Japan +81.3.3511.
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 181T To install and set up an MPA 181T 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 181T on a rack, under a desk, or on a projector, as illustrated below. Step 3 Attach the speakers to the MPA 181T.
Quick Start Guide — MPA 181T, cont’d Table of Contents Chapter 1 • Introduction .......................................................... 1-1 Step 5 Connect power cords to the MPA 181T and other audio equipment. Step 6 Adjust the MPA 181T input level, bass and treble. LEVEL BASS If connecting to a projector, ensure that the volume on the projector is at its lowest point, then adjust the level of the MPA 181T fully counterclockwise. a. TREBLE MPA 181T MINI POWER AMPLIFIER b.
Table of Contents, cont’d MPA 181T 1 Chapter One Introduction About this Manual About the MPA 181T Features ii MPA 181T • Table of Contents MPA 181T • Introduction
Introduction About this Manual This manual contains information about the Extron MPA 181T Mini Power Amplifier with instructions on how to mount and operate the unit. About the MPA 181T The Extron MPA 181T is a high performance, compact, single channel power amplifier. The MPA 181T delivers 18 watts (rms) for 70 Volt line level speakers, 14 watts (rms) for 4 ohm speaker loads, and 8 watts (rms) for 8 ohm loads.
Introduction MPA 181T 2 Chapter Two Installation and Operation Installation Overview Mounting the MPA 181T Rear Panel Features Front Panel Features Setting up the MPA 181T Amplifier 1-4 MPA 181T • Introduction
Installation and Operation Installation Overview To install and set up an MPA 181T, follow these steps: 1 2 3 Turn all of the equipment off. Make sure that the input devices (DVD, VCR, PC, etc.), the MPA 181T unit, and the output devices are turned off and disconnected from their power source(s). Rack mounting 1. If feet were previously installed on the bottom of the MPA 181T unit, remove them. Mount the MPA 181T unit. See Mounting the MPA 181T below. 2.
Installation and operation, cont’d 6" Deep Rack Shelf #8 Wood Screw (2 Plcs) Each Side LIM ITE 1/4 Rack Width False Front Face Plate Drill pilot holes — 3/32” (2.4 mm) dia. 1/4” (6.
Installation and operation, cont’d Rear Plate Above Projector Mount Bracket Secure the bracket to the U-bolt onto the ceiling pole with the included hex nuts, washers, and lock washers. 6. Mini Power Amplifier Rubber Pad Clamping Plate Extron MPA 181T Cable Access Mini Power Amplifier ON Rubber Pad LEV EL BAS S TRE BLE COM 70V MPA 181T Cover Sheet Extron PMP 4/8 Ohms LISTED 1T23 I.T.E.
Installation and operation, cont’d To verify the polarity before connection, plug in the power supply with no load and check the output with a voltmeter. CAUTION 4 Unbalanced Output Balanced Output AUDIO Tip Ring Sleeve (s) Tip Ring R R AUDIO L Tip See Caution Sleeve (s) Tip See Caution L When connecting the power supply, voltage polarity is extremely important. Applying power with incorrect voltage polarity could damage the power supply and the interface.
Installation and operation, cont’d 4/8 ohm output COM 70V 70V 4/8 OHM + - 70 volt output 1. If connecting to a projector, ensure that the volume on the device is at its lowest point, then adjust the level of the MPA 181T fully counterclockwise. 2. Set the projector volume to its maximum volume level. No sound should come out. 3. Return to the MPA and raise the level until sound distortion occurs, then lower the level slightly until any distortion disappears.
Installation and operation, cont’d 1 MPA 181T MAX 2K 10K 2 MIN 3 GND Figure 2-12 — Pinout diagram for a third party volume potentiometer See Chapter 3, Remote Operation for more information on the three options (IR remote, MLC series, or DC volume/mute controller) for remote control.
Remote Operation Remote Control Options MPA 181T Extron SI 26CT PC DVD Two-way Ceiling Speakers S-video Audio RCA or MPA 1T 18 D TE LIS 23 1T UTS 70V TP COM OU .E. US I.
Specifications, Part Numbers, and Accessories Specifications Audio Frequency response 8 ohm direct output ......... 20 Hz to 20 kHz, ±1.5 dB 70 V output ....................... 110 Hz to 20 kHz, +0.5/-3 dB THD + Noise ................................ 0.1% @ 1 kHz at nominal level (1 watt, 8 ohm load, or 70 V output) S/N ................................................ >72 dB @ 20 Hz to 20 kHz at maximum output (unweighted) CMRR ............................................
Specifications, Part Numbers, and Accessories Enclosure dimensions ................. 1.7" H x 4.3" W x 6.0" D (1U high, quarter rack wide) 4.3 cm H x 10.9 cm W x 15.2 cm D (Depth excludes connectors.) Product weight ............................. 1.2 lbs (0.5 kg) Shipping weight ........................... 6 lbs (3 kg) Vibration .......................................
Specifications, Part Numbers, Accessories, cont’d A-6 MPA 181T • Specifications, Part Numbers, and Accessories
