PA-2312 Public Address 2 CH Power Amplifier - Ljudia

PA-2312 Public Address 2 CH Power AmplifierPA 2312 PUBLIC ADDRESS 2 CH POWER AMPLIFIERCHANNEL 1CHANNEL 2PROTPROTCLIPCLIP-10dB-10dB-40dB-40dB11 10 912813711 10 9128137POWER151765151765ON194194223223OFF292292541541000000* Rack mount products in the Western Hemisphere(North America, South America,and the Caribbean) do not have handles installed due to customer preference.

Contents1. Unpacking and Installation.....................................................................................................12. Features ................................................................................................................................23. Front Panel Controls...............................................................................................................34. Rear Panel Controls ...............................................................................................................45. Applications ..........................................................................................................................66. Block Diagram.......................................................................................................................77. Specifications.........................................................................................................................8OFFICE :226-9 DUGJUNG - LI, HOE CHUN - EUB,YANGJU - KUN, KYUNGKI - DO, KOREATEL : 82-351-860-7041~5, FAX : 82-351-858-1907Home Page : http://www.inter-m.co.krE-mail : export@inter-m.co.kr

PUBLIC ADDRESS 2 CH POWER AMPLIFIERUnpacking and InstallationAlthough it is neither complicated to install nor difficult to operate your PA Amplifier, a few minutes of yourtime is required to read this manual for a properly wired installation and becoming familiar with its manyfeatures and how to use them. Please take a great care in unpacking your set and do not discard the cartonand other packing materials. They may be needed when moving your set and are required if it everbecomes necessary to return your set for service.Never place the unit near radiators, in front of heating vents, in excessively humid or dusty location to avoidearly damage and for your years of quality use. Connect your complementary components as illustrated inthe following page.CAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENThis symbol is intended to alert the user to thepresence of uninsulated “dangerous voltage”within the product’s enclosure that may be of sufficientmagnitude to constitute a risk of electricshock to persons.CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK.DO NOT REMOVE COVER (OR BACK).NO USER-SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.Caution:This symbol is intended to alert the user to thepresence of important operation and maintenance(servicing) instructions in the literatureaccompanying the appliance.To prevent electric shock do not use this (polarized) plugwith an extension cord, receptacle or other outlet unlessthe blades can be fully inserted to prevent blade exposure.WARNINGTo prevent fire or shock hazard, do notexpose the unit to rain or moisture.Attentions: Pour prévenir les chocs électriques ne pas utiliser cettefiche polarisée avec un prolongateur, une prise decourant on une autre sortie de courant, sauf si leslames peuvent étre insérées à fond sans en laisseraucune partie à découvert.PA-2312 1

PUBLIC ADDRESS 2 CH POWER AMPLIFIERFeatures- 2 CHANNEL POWER AMPLIFIERThis unit is composed of two power amplifier circuits.- GAIN VOLUME ADJUSTMENT & OUTPUT LEVEL INDICATOR IN FRONT PANELGain volume is located at the front panel, so you can easily control output level. And you can monitor outputlevel throughout LED indicator in front panel.- THERMAL PROTECTION & AUTOMATIC IDLING CiRCUITRYTo insure stability and reliability against over-current and over-heating, thermal protection circuitry is provided.In addition, automatic idling circuit is provided to protect against thermal run-away.- BALANCED INPUTA balanced input is provided to reduce hum pick up from a long distance input cable and to avoid groundloop problem when you build the system.- USE OF EMERGENCY BATTERYYou can operate this PA amplifier by using emergency battery for unexpected AC power failure.2PA-2312

PUBLIC ADDRESS 2 CH POWER AMPLIFIERFront Panel Controls4321PA-2312PUBLIC ADDRESS 2 CH POWER AMPLIFIERCHANNEL 1CHANNEL 2PROTPROTCLIPCLIP-10dB-10dB-40dB-40dB11 10 912813711 10 9128137POWER151765151765ON194194223223OFF29229254154100000051. POWER INDICATING LEDThis LED indicates power is turned ON.2. POWER SWITCHPressing this switch to ON will make the power indicating LED ON and supply the power to unit.3. OUTPUT LEVEL INDICATORSThese LEDs indicates the output level of this amplifier. Be sure not to operate the unit with the clip LEDON continuously (RED).4. PROTECTION INDICATORThis LED indicates the condition of the protection circuit. When the protection LED is “ON” the amplifieris not operating normally (overheating and limiting), please check the INPUT/OUTPUT condition of theamplifier.5. LEVEL ADJUSTMENT VOLUMEThis volumes control output levels.PA-2312 3

PUBLIC ADDRESS RECEIVERRear Panel Controls321OUTPUTB ACOM 22V ( 4Ω ) 70V ( 21Ω ) 100V ( 41Ω )CAUTION; TO REDUCE THE RISK OF FIREREPLACE ONLY WITH SAME TYPE FUSE.UTILISER UN FUSIBLE DE RECHANGEDE MEME TYPE.CH 1CH 2CAUTION; TO REDUCE THE RISK OF ELE-CTRIC SHOCK, DO NOT REMOVE COVER.NO USER SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICEPERSONNELAVIS; RISQUE DE CHOC ELECTRIQUE NEPASOUVRIR.MODEL NO. PA-2312PUBLIC ADDRESS2 CH POWER AMPLIFIER~AC INPUT230V 50Hz, 290WFUSET4AL/250VCH 1HPFOUTPUT POWER : 120WX2MADE IN KOREAONOFFBALANCED INPUTLINKCH 2HPFGROUNDLIFTONOFFFLOATFRA ME+DC I NPUT24VS N4 5 6 7 81. FANThe fans should be kept free of all obstructions and be accessible to cool fresh air when possible. It isimportant that the fans be used in a dust free environment.2. SPEAKER OUTPUT TERMINALSThese terminals are for connection of speaker lines to deliver power output to speakers. Impedance (voltages)of 4 ohm, 25V, 70V and 100V are provided for convenience. In any case, use the speakerswhose combined impedance is equal to or higher than the rated output impedance of amplifier.4Ω 25V 70V 100V22V 5.2Ω 42Ω 83Ω* 100V or 25V can be selected optionally.3. AC INLETThis terminal is connected AC input cord.4. FUSE DRAWERThese fuse drawer contains AC fuse. Replace them with the same type fuse when they are blown out. Ifthey continuously blow, stop replacing fuses and refer servicing to qualified personnel.5. HIGH-PASS FILTER SWITCHThis switch is for activating the High-pass Filter circuit, to protect speakers from excessive low frequencypower demands. The -3dB frequency of the High-pass Filter is 400Hz.4PA-1000B/1000BR

PUBLIC ADDRESS 2 CH POWER AMPLIFIER6. INPUT JACKSThese input jacks and terminals are for the balanced input signal. You can connect amplifiers in parallelby using XLR jack.7. EARTH LINK SWITCHThis slide switch provides for separation of “safety” earth and “safety” earth to prevent from hum loops.8. DC INPUT TERMINALSThese terminals are for connecting DC power supply of battery. Connect red colored terminal to positivelead of battery and black colored one to negative lead of battery.PA-23125

COM22V ( 4Ω )B A70V ( 21Ω ) 100V ( 41Ω )AMP IN 1ALLGROUP 2AMP IN 2 GROUP 1 TIMERREMOTE24V CH 16 CH 15 CH 14 CH 13 CH 12 CH 11 CH 10 CH 9MADE IN KOREAONOFFCH 8 CH 7 CH 6 CH 5 CH 4 CH 3 CH 2 CH 1ONPUBLIC ADDRESS 2 CH POWER AMPLIFIERApplicationsTURN TABLE(CD, TUNER.....)PP-9214INSERTINSERTREC OUTPUTPRIORITY INPUTMUTES NLINELINE LINE LINE LINE LINE LINEOUTPUTOUTPUTCH 12 CH 11 CH 10 CH 9MIC MIC MIC MIC MIC MIC MIC MICCH 2CH 1DC INPUT24VCH 8 CH 7 CH 6CH 5 CH 4 CH 3 CH 2 CH 1MICOUTPUTCAUTION; TO REDUCE THE RISK OF FIREREPLACE ONLY WITH SAME TYPE FUSE.UTILISER UN FUSIBLE DE RECHANGEDE MEME TYPE.CH 1CH 2~AC INPUT230V 50Hz, 290WFUSET4AL/250VCH 1HPFCAUTION; TO REDUCE THE RISK OF ELE-CTRIC SHOCK, DO NOT REMOVE COVER.NO USER SERVICEABLE PARTS INSIDE.REFER SERVICING TO QUALIFIED SERVICEPERSONNEL.AVIS; RISQUE DE CHOC ELECTRIQUE NEPASOUVRIR.MODEL NO. PA-2312PUBLIC ADDRESS2 CH POWER AMPLIFIEROUTPUT POWER : 120WX2MADE IN KOREAONOFFBALANCED INPUTLINKCH 2HPFGROUNDLIFTONOFFFLOATFRA ME+DC I NPUT24VS NPS-9116(+)(+)(-)S N- +DC INPUT(-)PD-9359SWED 1 (2000W)( )(RACK ONLY)SWITCHEDDC OUT 24V5A MAX(AMP ONLY)SWITCHED DC OUT 24VUNSWITCHEDDC OUTPUT 24VREMOTEC-SW-HEMERGENCYGNDSPEAKER( )SWED 2 (2000W)S NBATTERYINPUT~AC INPUT220V/60Hz,217VAAC FUSE4A/250VUNSWED (700W)DC FUSE10A/250VSWED 3 (2000W)( )( )HOTAC INPUTPB-9207AMODEL NO. PB-9207ABATTERY CHARGERBATTERY IN~ AC INPUT : 220V 60Hz, 139VAFUSE : 1A / 250V( )( )N( )( )( )BATTERY(DC24V)( )BATTERY(DC24V)6 PA-2312

PUBLIC ADDRESS 2 CH POWER AMPLIFIERBlock DiagramPA-23127

PUBLIC ADDRESS 2 CH POWER AMPLIFIERSpecifications ..........................................................0dB=0.775Vrms- ELECTRICALRated Output (THD 1%).......................................................................................................120W (RMS)..............................................................................................................................................4Ω (22V)...........................................................................................................................................5.2Ω (25V)............................................................................................................................................41Ω (70V)..........................................................................................................................................83Ω (100V)Input Sensitivity/Impedance..............................................................................................1V/10kΩ, BALFrequency Response (+1/–3dB) ...........................................................................................70Hz-20kHzT.H.D .................................................................................................................................Less than 1%S/N .............................................................................................................................Better than 95dBHPF ................................................................................................................................–3dB at 400HzChannel Separation .......................................................................................................Less than –70dB- GENERALPower Source ..................................................................................AC 110V–240V, 50/60Hz, DC 24VPower Consumption .....................................................................................................................290WWeight..........................................................................................................................................20kgDimensions ...............................................................................................482(W) 132(H) 280(D)mm* Specifications and design subject to change without notice for improvements.8 PA-2312

Inter-M, Ltd. (Korea) began operations in 1983.Since then, Inter-M has grown to become one of the largest manufacturersof professional audio and commercial sound electronics equipment in the world.Inter-M has gained worldwide recognition for its own branded products,as well as private label manufacturing of electronics sold under other names (OEM).The company is no longer just a Korean company, but rather a global companythat is truly international in scope, with factories and offices in Korea and China,and sales and marketing operations located in Japan, Europe, and the U.S.A.With more than 850 employees around the globe,Inter-M is well-poised for further growth and expansion.INTER-M AMERICAS, INC.1 EAST BEACON LIGHT LANE CHESTER, PA USA 19013-4409TEL : 1-610-874-8870, FAX : 1-610-874-8890Home Page : http://www.inter-m.net, E-mail : service@inter-m.netINTER-M CorporationSEOUL OFFICE:653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREATEL : 82-2-2289-8140~8, FAX : 82-2-2289-8149Home Page : http://www.inter-m.com, E-mail : export@inter-m.comMADE IN KOREADecember 2005 9007907712 B