User’s Manual MPA 152 Mini Power Amplifier 68-1320-01 Rev.
Precautions 3AFETY )NSTRUCTIONS s %NGLISH 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 )NSTRUCTIONS s Read and understand all safety and operating instructions before using the equipment.
安全须知 s 中文 警告 这个符号提示用户该设备用户手册中 有重要的操作和维护说明。 电源 s 该 设 备 只 能 使 用 产 品 上 标 明 的 电 源 。 设 备 必须使用有地线的供电系统供电。 第三条线 （地线）是安全设施，不能不用或跳过。 这个符号警告用户该设备机壳内有暴 拔掉电源 s 为安全地从设备拔掉电源，请拔掉所有设备后 或桌面电源的电源线，或任何接到市电系统的电源线。 露的危险电压，有触电危险。 电源线保护 s 妥善布线， 避免被踩踏，或重物挤压。 注意 阅读说明书 s 用 户 使 用 该 设 备 前 必 须 阅 读 并 理 解所有安全和使用说明。 保存说明书 s 用户应保存安全说明书以备将来使 用。 遵守警告 s 用户应遵守产品和用户指南上的所有安 全和操作说明。 维护 s 所有维修必须由认证的维修人员进行。 设备内部 没有用户可以更换的零件。为避免出现触电危险不要自 己试图打开设备盖子维修该设备。 通风孔 s 有些设备机壳上有通风槽或孔，它们是用来防止 机内敏感元件过热。 不要用任何东西挡住通风孔。 锂电池 s 不正确的更换电池会有爆炸的危险。 必须使用 与厂家推荐的相同
Important Safety Instructions 2EAD THESE INSTRUCTIONS +EEP THESE INSTRUCTIONS (EED ALL WARNINGS &OLLOW ALL INSTRUCTIONS $O NOT USE THIS APPARATUS NEAR WATER #LEAN ONLY WITH DRY CLOTH $O NOT BLOCK ANY VENTILATION OPENINGS )NSTALL IN ACCORDANCE WITH THE MANUFACTURERgS INSTRUCTIONS $O NOT INSTALL NEAR ANY HEAT SOURCES SUCH AS RADIATORS HEAT REGISTERS STOVES OR OTHER APPARATUS INCLUDING AMPLIlERS THAT PRODUCE HEAT $O NOT DEFEAT THE SAFETY PURPOSE OF THE POLARIZED
Quick Start Guide — MPA 152 Amplifier 4O INSTALL AND SET UP AN -0! -INI 0OWER !MPLIlER FOLLOW THESE STEPS Step 1 Turn all of the equipment off AND DISCONNECT IT FROM POWER SOURCES Step 2 Mount the MPA 152 ON A RACK UNDER A DESK OR ON A PROJECTOR AS ILLUSTRATED BELOW Extron MPA 152 Mini Power Amplifier Extron PMK 300 Projector Mounting Bracket Extron Power Supply Plastic Tie Under Desk Projector Mount DIS TR IBU TIO N AM PL IFIE R 3.
Quick Start Guide — MPA 152 Amplifier, cont’d N The MPA 152 amplifier mixes all right channel inputs to a single signal and all left channel inputs to a second signal. The user may output these signals as stereo or sum them to produce a dual mono signal. Step 5 Connect power cords to MPA 152 and other audio equipment Step 6 Adjust the MPA 152 Plus input level, bass and treble. a.
Table of Contents Chapter One s Introduction .................................................... 1-1 !BOUT THIS -ANUAL .................................................................... 1-2 !BOUT THE -0! ................................................................... 1-2 -0! &EATURES ...................................................................... 1-3 Chapter Two s Installation ..................................................... 2-1 -OUNTING THE -0! .............................
Table of Contents, cont’d ii -0! !MPLIlER s 4ABLE OF #ONTENTS
MPA 152 Amplifier 1 Chapter One Introduction About this Manual About the MPA 152 MPA 152 Features
Introduction About this Manual 4HIS MANUAL CONTAINS INFORMATION ABOUT THE %XTRON -0! -INI 0OWER !MPLIlER WITH INSTRUCTIONS ON HOW TO MOUNT INSTALL AND OPERATE THE UNIT About the MPA 152 4HE %XTRON -0! IS A HIGH PERFORMANCE COMPACT POWER AMPLIlER 4HE AMPLIlER DELIVERS UP TO WATTS RMS CHANNEL STEREO OR DUAL MONO INTO A OHM SOUND SYSTEM OR WATTS RMS CHANNEL INTO AN OHM SYSTEM &RONT PANEL CONTROLS ALLOW EASY ADJUSTMENT OF BASS AND TREBLE VOLUME AND INPUT LEVEL 4HE UNIT MEETS 5, SMOKE A
MPA 152 Features Class D digital audio amplifier &OR HIGH EFlCIENCY AND LESS HEAT PRODUCTION Ripple Steering technology — 0RODUCES CLEANER LOW EMISSION AUDIO OUTPUT SIGNALS Fixed switching frequency — 3WITCHES AT A FREQUENCY BELOW THE !- BAND WHICH REDUCES THE CHANCE OF RADIO INTERFERENCE Three audio inputs — !CCEPTS BALANCED UNBALANCED INPUT PAIR CAPTIVE SCREW AND UNBALANCED PAIRS 2#! AND 423 PROVIDING UP TO THREE RIGHT AND THREE LEFT CHANNEL INPUTS !LL THREE RIGHT INPUTS ARE MIXED TO PRODUCE A
Introduction, cont’d 1-4 -0! !MPLIlER s )NTRODUCTION
MPA 152 Amplifier 2 Chapter Two Installation Mounting the MPA 152 MPA 152 Front Panel Features MPA 152 Rear Panel Features
Installation Mounting the MPA 152 4HE -0! AMPLIlER MEETS 5, REQUIREMENTS FOR HEAT AND SMOKE RELEASE AND IS SUITABLE FOR IN THE CEILING INSTALLATIONS ALLOWING THE UNIT TO BE STORED OUT OF SIGHT WITH REDUCED RISK OF THEFT !LTERNATIVELY THE 5 QUARTER RACK SIZE OF THESE AMPLIlERS ALLOWS THEM TO BE MOUNTED IN A VARIETY OF CONVENIENT LOCATIONS s 2ACK s 4ABLETOP s 0ROJECTOR s 5NDER FURNITURE Rack mounting UL guidelines for rack mounting 4HE FOLLOWING 5NDERWRITERS ,ABORATORIES 5, GUIDELINES ARE RELEV
Rack mounting procedures 4HE UNIT CAN BE MOUNTED IN THE FRONT OR REAR OF ANY OF THESE RACK SYSTEMS s 235 DEEP 5 RACK SHELF KIT 0. 60-190-10 s 23" DEEP 5 BASIC RACK SHELF 0. 60-604-11 s 235 DEEP 5 RACK SHELF KIT 0. 60-190-01 s 23" DEEP 5 BASIC RACK SHELF 0. 60-604-02 4O RACK MOUNT THE -0! FOLLOW THESE DIRECTIONS 1. )F NECESSARY REMOVE RUBBER FEET FROM THE BOTTOM OF THE UNIT 2.
Installation, cont’d Projector mounting 4HE INSTRUCTIONS FOR MOUNTING THE AMPLIlER NEAR THE PROJECTOR USING THE 0-+ PROJECTOR MOUNTING KIT 0.
a 5SE THE TWO X SCREWS PROVIDED TO SECURE THE AMPLIlER TO THE BRACKET b )F REQUIRED SECURE THE POWER SUPPLY USING THE PLASTIC TIES PROVIDED WITH THE KIT N The projector pole can be clamped to the back surface of the clamping plate on the PMK 300, as shown in the figure on the previous page. Alternatively, the PMK 300 has a hole in the bottom plate that allows the projector pole to be inserted through the center of the plate.
Installation, cont’d Under-furniture mounting 4HE -0! AMPLIFER CAN BE MOUNTED UNDER FURNITURE USING THE OPTIONAL -"5 MOUNTING KIT 0. 70-212-01 1. !TTACH THE MOUNTING BRACKETS TO THE -0! WITH THE PROVIDED MACHINE SCREWS AS SHOWN IN THE lGURE BELOW 2. (OLD THE AMPLIlER WITH THE ATTACHED BRACKETS AGAINST THE UNDERSIDE OF THE TABLE OR OTHER FURNITURE -ARK THE LOCATION OF THE SCREW HOLES OF THE BRACKET ON THE MOUNTING SURFACE 3.
-0! !MPLIlER s )NSTALLATION 2-7
Installation, cont’d MPA 152 Front Panel Features 4HE ILLUSTRATION BELOW SHOWS THE FRONT PANEL OF THE -0! STEREO 1 LEVEL BASS DUAL MONO TREBLE MPA 152 MINI POWER AMPLIFIER 2 3 Figure 2-4 — MPA 152 Front Panel Features a b c 2-8 Power LED 4HE GREEN ,%$ IS LIT WHEN THE UNIT RECEIVES POWER Stereo/Dual Mono toggle switch — !LLOWS THE USER TO CHOOSE BETWEEN STEREO OUTPUT FOR STEREO PROGRAM SPEAKERS OR DUAL MONO OUTPUT FOR MONO CEILING SPEAKERS Potentiometers 4HREE FRONT PANEL POTENTIOMETER
MPA 152 Rear Panel Features 4HE ILLUSTRATION BELOW SHOWS THE REAR PANEL OF THE -0! C US MPA 152 LISTED 17TT AUDIO/VIDEO APPARATUS 4 4/8 OHMS L INPUTS POWER 12V 3A MAX OUTPUT CLASS 2 WIRING DO NOT GROUND OR SHORT SPEAKER OUTPUTS! R REMOTE L R R L 10V 5 6 7 8 VOL/MUTE 50mA 9 Figure 2-5 — MPA 152 Rear Panel Features d e f g h i Power connector #ONNECT THE 6 EXTERNAL POWER SUPPLY TO THE AMPLIlER USING THE POLE CAPTIVE SCREW CONNECTOR RCA input connectors 4HESE FEMALE 2#!
Installation, cont’d Power connector #ONNECT THE TWO POLE MM CAPTIVE SCREW CONNECTOR FROM THE POWER SUPPLY PROVIDED TO THIS SOCKET ON THE REAR PANEL %NSURE THE CONNECTIONS HAVE THE CORRECT POLARITY AS SHOWN IN THE ILLUSTRATION BELOW Smooth Ridges POWER Power Receptacle A A 12V 3A MAX SECTION A–A Power Supply Output Cord DC Power Cord Captive Screw Connector Ground +12 VDC External Power Supply (12 VDC, 3 A ) AC Power Cord Figure 2-6 — Connecting power N The length of the exposed wires i
Audio inputs INPUTS L R L R Figure 2-7 — Audio inputs RCA connectors — 4WO CONNECTORS LEFT AND RIGHT ACCEPT UNBALANCED LINE LEVEL AUDIO SIGNALS 4HE INPUT CAN BE STEREO USING TWO 2#! JACKS OR MONO USING A SINGLE 2#! JACK PLUGGED INTO THE LEFT MONO SOCKET )F UNUSED THE CONNECTORS AUTOMATICALLY TERMINATE TO LOWER THE NOISE mOOR Sleeve ( ) 3.
Installation, cont’d Remote control Wiring for remote control 4HIS PIN CAPTIVE SCREW CONNECTOR ALLOWS A WALL MOUNTED AUDIO CONTROLLER OR -EDIA,INK PRODUCT TO CONTROL VOLUME AND MUTE LEVELS REMOTELY REMOTE 10V VOL/MUTE 50mA /PTIONS FOR REMOTE CONTROL INCLUDE %XTRONgS 6# 0. 70-530-02 6#- !!0 0. 70-396-x1 6#- -!!0 0. 70-397-x1 AND -,! 6# 0.
Controlling multiple amplifiers with one volume controller 3EVERAL -0! UNITS CAN BE DAISY CHAINED SO THAT ONE VOLUME CONTROLLER CAN SIMULTANEOUSLY REGULATE THE VOLUME OF ALL THE AMPLIlERS N As additional amplifiers are added to the daisy chain, the sensitivity of the volume potentiometer will change. The maximum volume level (fully clockwise) will not be affected.
Installation, cont’d Audio output 4HIS POLE MM CAPTIVE SCREW CONNECTOR IS USED TO CONNECT THE AMPLIlER TO THE SPEAKERS OUTPUT 4/8 OHMS !LL RIGHT CHANNEL INPUT SIGNALS ARE MIXED R L AND SUMMED TO PRODUCE A SINGLE RIGHT CHANNEL OUTPUT LIKEWISE ALL LEFT CHANNEL INPUT SIGNALS ARE MIXED AND SUMMED TO PRODUCE A SINGLE LEFT CHANNEL OUTPUT )F THE FRONT PANEL SWITCH IS SET TO STEREO THE OUTPUT WILL BE STEREO IF THE FRONT PANEL SWITCH IS SET TO MONO THE RIGHT AND LEFT CHANNELS WILL BE MIXED AND SUMMED FOR A
MPA 152 Amplifier 3 Chapter Three Operation Setting up the MPA 152 Amplifier Remote Control Options
Operation Setting Up the MPA 152 Amplifier Setting input level !DJUST THE -0! INPUT LEVEL BASS AS FOLLOWS 1 5NPLUG THE REMOTE PLUG FROM THE UNIT 2 4URN THE LEVEL POTENTIOMETER FULLY COUNTERCLOCKWISE 3 3ET THE VOLUME OF THE AUDIO SOURCE TO ITS MAXIMUM LEVEL .
Remote Control Options DVD S-video Audio RCA 8 ohm Ceiling Speakers in Parallel PC VGA w/ Audio Cable S UT TP OU US 2 PL MPA 12 L 4/8ms Oh TS T 17T EO TED LIS /VID S DIO ATU AU PAR US AP INPU R R TE MO RE V UTE 10 L/M VO L Extron MPA 152 C WER PO VCR R L V X 12 MA 3A Composite Audio RCA Mini Power Amplifier Variable Audio Output 1 R TO EC OJ PR 2 F OF ComLink 3 ON ME 4 LU VO G NFI CO 4 IP C 10 ML ME 100 LU VO VCM 3 Extron MLC 104 IP Controller TE MU P AA 2
Operation, cont’d 3-4 -0! !MPLIlER s /PERATION
MPA 152 Amplifier A Appendix A Reference Information Specifications Included Parts Accessories
Reference Information Specifications Audio 'AIN "ALANCED 5NBALANCED 3TEREO CHANNEL SEPARATION #-22 "ASS ADJUSTMENT X D" X D" D" K(Z D" K(Z D" (Z REFERENCE TO K(Z D" TOLERANCE 4REBLE ADJUSTMENT D" K(Z REFERENCE TO K(Z D" TOLERANCE Audio input .
/UTPUT POWER WATTS RMS PER CHANNEL OHMS K(Z 4($ WATTS RMS PER CHANNEL OHMS K(Z 4($ &REQUENCY 2ESPONSE (Z TO K(Z D" WATT OUTPUT 4($ .OISE K(Z AT NOMINAL LEVEL WATT OHM LOAD 3 .
Reference Information, cont’d %NCLOSURE DIMENSIONS ( X 7 X $ 5 HIGH QUARTER RACK WIDE CM ( X CM 7 X CM $ $EPTH EXCLUDES CONNECTORS 0RODUCT WEIGHT LBS KG 3HIPPING WEIGHT LBS KG 6IBRATION )34! ! IN CARTON )NTERNATIONAL 3AFE 4RANSIT !SSOCIATION 2EGULATORY #OMPLIANCE 3AFETY #% #5, 5, 5, RATED FOR USE IN PLENUM AI
Accessories Accessories Part number -"" "ACK OF RACK MOUNTING KIT -"5 -INI UNDER DESK MOUNTING KIT 0-+ 0ROJECTOR MOUNTING KIT 0-+ 0ROJECTOR MOUNTING KIT 23" DEEP 5 BASIC RACK SHELF 23& DEEP 5 RACK SHELF KIT 23" DEEP 5 BASIC RACK SHELF 235 DEEP 5 RACK SHELF KIT 23" DEEP 5 BASIC RACK SHELF 235 DEEP 5 RACK SHELF KIT
Reference Information, cont’d A-6 -0! !MPLIlER s 2EFERENCE )NFORMATION
%XTRON S 7ARRANTY Extron Electronics warrants this product against defects in materials and workmanship for a period of three years from the date of purchase.
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