infinity-PS12-sub-sm 维修电路原理图.pdf
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1、 PS-10 PS-12PS-10 PS-12 PS Series Powered Subwoofers SERVICE MANUAL Infinity Systems Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 10/2004 RadioFans.CN 收音机爱 好者资料库 CONTENTS BASIC SPECIFICATIONS . . . . . . . . . . . . . . . . 1 PS-10 DETAILED SPECIFICATIONS . . . . . . . . . . . .
2、 . . . . . . . . . . . . 2 PS-12 DETAILED SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . 4 CONTROLS & CONNECTIONS . . . . . . . . . . . . . . . 6 OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 PS-10 BLOCK DIAGRAM. . . . . . . . . . 9 PS-12 BLOCK DIAGRA
3、M. . . . . . . . . . 10 PS-10/12 TEST SET-UP AND PROCEDURE.11 TECH TIP INFTT2003-02. . . . . . . . . . 12 PS-10 EXPLODED VIEW . . . . . . . . . . . . . . . 13 PS-12 EXPLODED VIEW . . . . . . . . . . . . . . . 14 PS-10 PACKING. . . . . . . . . . . . . . . . . . . . . . . .15 PS-12 PACKING. . . . . .
4、. . . . . . . . . . . . . . . . . .16 PS-10 ELECTRICAL PARTS LIST . . . . . . . . . . . . 17 PS-12 ELECTRICAL PARTS LIST . . . . . . . . . . . 21 PCB DRAWINGS. . . . . . . . . . . . . . . . . . . . . . . . . . 25 IC TRANSISTOR PINOUTS . . . . . . . . . . . . . 28 PS-10 SCHEMATIC DIAGRAMS . . . . . .
5、 . . . . . . . . . . . .29 PS-12 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . .31 SPECIFICATIONS PS-10 PS-12 Frequency Response: 27Hz 150Hz (3dB) 25Hz 150Hz (3dB) Maximum Amplifier Output: 250 watts RMS 300 watts RMS (20Hz 150Hz with no more than 0.1% THD) Crossover Frequencies: 50Hz 150Hz,
6、50Hz 150Hz 24dB/octave, continuously variable Driver: 10 (254mm) MMD 12 (305mm) MMD Dimensions (H x W x D): 14 3/4 x 12-1/2 x 16 16-1/2 x 14-3/8 x 17-1/2 (375mm x 318mm x 406mm) (419mm x 365mm x 445mm) Weight: 38 lb (17.3kg) 45 lb (20.5kg) Infinity continually strives to update and improve existing
7、products, as well as create new ones. The specifications and construction details in this and related Infinity publications are therefore subject to change without notice. PS-10/PS-12 PS-10/PS-12 1RadioFans.CN 收音机爱 好者资料库PS-10 Powered Sub/ Plate Amp LINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotesUS 120vac/
8、60HzYes108-132120VrmsNormal OperationEU 230vac/50-60HzYes207-264230VrmsNormal operation, MOMS requiredParameterSpecificationUnitQA Test LimitsConditionsNotesAmp SectionType (Class AB, D, other)Dn/an/aLoad Impedance (speaker)5.6Ohmsn/aNominalRated Output Power (120VAC)150Watts138Domestic version only
9、 120 VAC-60 HzRated Output Power (230VAC)150Watts128EU Version only 230 VAC-50 HzAVG RMS Dynamic Power250Watts225Average RMS power, 3/20 Cycles 50 Hz, Driven 6dB above its input sensitivity sensitivityTHD Rated Power0.5%122K filter145 WattsTHD 1 Watt0.1%0.522K filterDC Offset10mV-DC30Amplifier outpu
10、tDamping factor50DF20Measured at amplifier board Measured at the amplifier board. 150 Watts 50 Hz, THD must be less tan 0.1%Input SensitivityInput Frequency35Hz35Nominal Freq.L&R300mVrms2dBTo 150 Watts, Ap Zo=600 OhmsSingle input drivenL or R input300mVrms2dBTo 150 Watts , Ap Zo=600 OhmsSingle input
11、 driven, LFE switch ONSpeaker/Hi Level Input2.6Vrms2dBTo 150 WattsSingle input drivenSignal to NoiseSNR-A-Weighted90dBA85relative to rated powerA-Weighting filterSNR-unweighted85dBr75relative to rated power22K filterSNR rel. 1W-unweighted65dBr60relative to 1W Output22K filterResidual Noise Floor1mVr
12、ms1.5Volume max, using RMS reading DMM/VOM (or A/P) BW=20 Khz.Line level inputs must be terminated using 1KOHMResidual Noise Floor1.5mVrms(max)1.5Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics) (BW=20 Khz)Line level inputs must be terminated using 1KOHMInput ImpedanceLine Input
13、 (L, R,LFE)10Kohmsn/aNominalSpeaker/Hi Level Input 4.7Kohmsn/aNominalFiltersLP filter 4th order fixed50-150 Hz 102nd Order variable and 2nd order fix 2nd order variable + 2nd order fix-24 db/OctaveHP Filter 2nd orderFixedF=32 Hz, Q=0.95LFE Low pass 2nd order200LP T 50DF20Measured at amplifier board
14、Measured at the amplifier board. 140 Watts 50 Hz, THD must be less than 0.1%Input SensitivityInput Frequency35Hz35Nominal Freq.L&R250mVrms2dBTo 150 Watts, Ap Zo=600 OhmsSingle input drivenL or R input250mVrms2dBTo 150 Watts , Ap Zo=600 OhmsSingle input driven, LFE switch ONSpeaker/Hi Level Input2.3V
15、rms2dBTo 150 WattsSingle input drivenSignal to NoiseSNR-A-Weighted90dBA85relative to rated powerA-Weighting filterSNR-unweighted85dBr75relative to rated power22K filterSNR rel. 1W-unweighted65dBr60relative to 1W Output22K filterResidual Noise Floor1mVrms1.5Volume max, using RMS reading DMM/VOM (or A
16、/P) BW=20 Khz.Line level inputs must be terminated using 1KOHMResidual Noise Floor1.5 mVrms(max)1.5Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics) (BW=20 Khz)Line level inputs must be terminated using 1KOHMInput ImpedanceLine Input (L, R,LFE)10Kohmsn/aNominalSpeaker/Hi Level In
17、put 4.7Kohmsn/aNominalFiltersLP filter 4th order fixed50-150 Hz 102nd Order variable and 2nd order fix 2nd order variable + 2nd order fix-24 db/OctaveHP Filter 2nd orderFixedF=29 Hz, Q=1.5LFE Low pass 2nd order200LP T 18 MinutesPower on Delay time3sec.4AC Power AppliedPS-10/PS-12 PS-10/PS-12 4Parame
18、terSpecificationUnitQA Test LimitsConditionsNotesTransients/PopsATO Transient5mV-peakn/a Speaker OutputsTurn-on Transient50mV-peak2V-pk-pk Speaker OutputsAC Line cycled from OFF to ONTurn-off Transient50mV-peak2V-pk-pk Speaker OutputsAC Line cycled from ON to OFFEfficiencyEfficiency65%65Nominal Line
19、 voltage 120 VACStand-by Input Power18Watts20 nom. line voltageMaximum allowable input power under nominal Input voltage and frequency, HOT or COLD operation.Power Cons. rated power230Watts240 nom. line voltage150 Watts into 5.6 Ohms nominal line voltageProtectionsShort Circuit Protection YESfunctio
20、nal Direct short at outputAmplifier should resume operation after short circuit condition removal Thermal Protection YESfunctional1/8 max unclipped Power at 1.06 times the input voltageTemperature rise in accessible metal parts should not exceed 35K rise for domestic version or 30K rise for European
21、 versions (refer to requirements sheet).DC Offset ProtectionYES-DC present at Speaker Out leadsDesign must insure no Offset at the speaker output under any operating condition including abnormal operationLine Fuse RatingUSA-Domestic 2Amps2Type-T or Slo Blo-250 VInternal fuse with UL/SEMKO rated hold
22、erEU (230v)1.25Amps1.25Type-T or Slo Blo-250 V, Low Breaking capacityInternal fuse with UL/SEMKO rated holder4. ALL SPECS SHOULD BE MEASURED AT NOMINAL LINE VOLTAGE. 5.- EURPOEAN VERSION MUST BE PROVIDED WITH PLASTIC PLUGS ON THE BINDING POST CONNECTORSPS-10/PS-12 PS-10/PS-12 5PS-10/PS-12Rear PanelC
23、ONTROLS ANDCONNECTIONSCAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENCROSSOVERFREQUENCYLEVELLINE LEVEL INPHASEMinMaxLRL RFor LFE use L or RGreen: OnRed: Stand-By+ 50Hz080Hz150HzPOWERONLFE NORMAL180HIGHLEVELIN 120V60HzOFFWARNING: TO REDUCE THE RISK OF FIRE OR ELECTRICAL ?SHOCK DO NOT EXPOSE THIS APPLIANCE T
24、O RAIN OR MOISTURE.AVERTISSEMENT: POUR PRVENIR LES RISQUES DINCENDIE OU DE CHOC ?LECTRIQUE, VITER DEXPOSER CET APPAREIL A LA PLUIE OU A LHUMIDIT.NRTL/C?CSA 22.2?UL1492Subwoofer-Level Control LFE/Normal SelectorPhase SwitchCrossover AdjustmentLine-Level/LFE Input Speaker-Level Inputs Power SwitchStat
25、us LEDPS-10/PS-12 PS-10/PS-12 6PS-10/PS-12SYSTEMCONNECTIONSIf your receiver/processor doesnot contain a Dolby Digital or DTS processor but has subwoofer outputs:Set line-level/LFE switch to“Normal.”NOTE: If your receiver/processorhas only one sub out,you may useeither the L or R input.If you have a
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