HarmanKardon-HKSUB12-sub-sm维修电路原理图.pdf

harman/kardon HKSUB 12 Powered Subwoofer SERVICE MANUAL harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 9/2004 RadioFans.CN 收音机爱 好者资料库 CONTENTS BASIC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DETAILED SPECIFICATIONS . . . . . . . . . . . . . . . . . . . .2 CONTROLS & CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 CONNECTION GUIDE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 CONFIGURING RECEIVER/PROCESSOR. . . . . . . . . . . . . 8 OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 BASIC TROUBLESHOOTING GUIDE. . . . .10 HKSUB 12 EXPLODED VIEW. . . . . . . . . . . . . . . . . . . 11 HKSUB 12 AMPLIFIER EXPLODED VIEW. . . . . . . . . . . . . . . . . . . 12 HKSUB 12 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 HKSUB 12 TEST PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 HKSUB 12 PCB DRAWINGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 HKSUB 12 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . 17 HKSUB 12 MECHANICAL/PACKING PARTS LIST . . . . . . . . . . . . . . . . . . . . . . 20 HKSUB 12 IC TRANSISTOR PINOUTS . . . . . . . . . . . . . . . . . . . 21 HKSUB 12 SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 HKSUB 12 PACKAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 SPECIFICATIONS Amplifier Power (RMS) 150 Watts Driver 12 Polymer-coated-cone woofer Inputs Stereo Line Level, dedicated Subwoofer (LFE) and Speaker Level with gold-plated 5-way binding posts Outputs Speaker Level with gold-plated 5-way binding posts Low-Pass Frequency Continuously variable from 50Hz 150Hz Frequency Response 25Hz low-pass crossover setting Dimensions (H x W x D) 20-1/2 x 16 x 13-3/4 (520mm x 401mm x 350mm) Weight 40 lb/18kg Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications unless otherwise stated. 1HKSUB12 harman/kardonHKSUB12 harman/kardon RadioFans.CN 收音机爱 好者资料库HK SUB12150W Powered AmplifierLINE VOLTAGEYes/NoHi/Lo LineUnitNotesUS 120vac/60HzYes108-132VrmsNormal OperationParameterSpecificationUnitQA Test Limits ConditionsNotesAmp SectionType (Class AB, D, other)D D n/aLoad Impedance (speaker)4 Ohmsn/aNominalRated Output Power150 Watts1501 input drivenTHD Rated Power0.08 %122k filterTHD 1 Watt0.15 %0.522k filterDC Offset5 mV-DC30 Speaker OutputsDamping factor100 DF30Measured at speaker terminals, Output power 140 Watts THD 0.1 %Input SensitivityInput Frequency50 HzNANominal Freq.1 input drivenLine Input (L&R)220 mVrms2dBTo Rated Power1 input drivenLFE (Sub) Input220 mVrms2dBTo Rated PowerLFE input driven onlySpeaker/Hi Level Input2.2 Vrms2dBTo Rated Power(-20 dB below Line In).1 input drivenSignal to NoiseSNR-A-Weighted100 dBA85rel. to rated powerA-Weighting filterSNR-unweighted90 dBr80rel. to rated power22k filterSNR 1W-unweighted65 dBr60rel. to 1W Output22k filterResidual Noise Floor1.2 mVrms3.0Volume max, using RMS reading DMM/VOM (or A/P)Residual Noise Floor0.8mVrms(max)2.0Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)Input ImpedanceLine input L&R , LFE (Sub)10 K ohmsn/aNominalSpeaker/Hi Level Input4.7 K ohmsn/aNominalFiltersLeft & Right Low Pass fixed130 Hz-2dB -3dB ref. 100HzLFE Low Pass fixed220 Hz-2dB -3dB ref. 100HzSubsonic filter (HPF)22 Hz-2dB -3dB ref. 100HzLimiterYES-n/aFeaturesLFE(Sub) InputYESfunctional BW Limited to 220 HzVolume pot Taper (lin/log)log-functional ATOYESfunctional Signal Sensing (ATO)ATO test Frequency50 Hzn/aATO Line Level4.0 mV2.0 - 8.02mV50Hz into Line Input w/ 1 ch. drivenATO Speaker level input40 mV20 - 8050mV50Hz into Line Input w/ 1 ch. drivenATO Turn-on time5 msfunctionalAmp connected and AC on, then input signal appliedAuto Mute/ Turn-OFF Time15 minutes10 - 25T before muting, after signal is removedPower on Delay time3 sec.functionalAC Power AppliedTransients/PopsATO Transient5 mV-peak10 Speaker OutputsTurn-on Transient50 mV-peak100 Speaker OutputsAC Line cycled from OFF to ONTurn-off Transient50 mV-peak100 Speaker OutputsAC Line cycled from ON to OFFEfficiencyStand-by Input Power10 Watts12 nom. line voltageMaximum allowable input power under nominal Input voltage and frequency, HOT or COLD operation.Power Cons.rated power230 Watts250 nom. line voltage150 Watts 4 Ohms nominal line voltageProtectionShort Circuit Protection YES-functionalDirect short at outputThermal Protection 65 deg. C-functional1/8 max unclipped Power Temperature rise should not exceed 35K riseDC Offset ProtectionYES-functionalDC present at Speaker Out leadsRelay or crowbar (for driver/fire protection)Line Fuse RatingUS Version3.15 AmpsType-T or Slo BloExternal fuse with UL/SEMKO rated holder2HKSUB12 harman/kardonHKSUB12 harman/kardon 2AMPLIFIER PANEL CONTROLS AND CONNECTIONSAMPLIFIER PANEL CONTROLS AND CONNECTIONS Speaker-Level Inputs: If your receiveror amplifier does not have a line-level subwoofer output, connect these bindingpost terminals to the main left and rightspeaker terminals of your receiver or amplifier. Remember to maintain polarity by connecting the (+) terminal on the receiver/amplifier to the (+) terminal on theHKSUB 12 subwoofer,and the () terminal onthe receiver/ amplifier to the () terminal on theHKSUB 12 subwoofer. Speaker-Level Outputs: If you areusing the Speaker-Level Inputs onthe HKSUB 12, connect these binding postterminals to your front left and right speakers,remembering to maintain polarity by con-necting the (+) terminal on the HKSUB 12subwoofer to the (+) terminal on the speak-er, and the () terminal on the HKSUB 12subwoofer to the () terminal on the speak-er. If you are not using the Speaker-LevelInputs , connect your front left and right speakers directly to your receiver or amplifier. See pages 9 through 12 forfurther information on speaker connections. Line-Level Full-Range Inputs: Connectthe full-range,unfiltered line-level subwooferoutput or preamp output(s) of your receiver oramplifier to these inputs.If your receiver doesnot have a separate subwoofer output,use aY-adapter (not supplied) to bridge the receiverspreamp output to the main amp input for thatchannel,and connect the long end of theadapter to the corresponding line-level inputon the HKSUB 12.If your receiver has only asingle subwoofer output,you may connect itto either the left or right line-level input on theHKSUB 12,and no Y-adapter is needed. Line-Level Subwoofer (SUB) Input:Connect the filtered subwoofer output of areceiver to this input.This input bypassesthe HKSUB 12s internal crossover circuitry,RISK OF ELECTRIC SHOCKDO NOT OPENRISK OF ELECTRIC SHOCKDO NOT OPENCAUTIONCAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENRISK OF ELECTRIC SHOCKDO NOT OPENCAUTIONCAUTIONRISK OF ELECTRIC SHOCKDO NOT OPENRISK OF ELECTRIC SHOCKDO NOT OPENHKSUB 12ONLRLINELEVELINPHASEMAXMINIMPORTANT: CONNECT STRIPED WIRE TO RED ( ) SPEAKER TERMINAL.AC 120V60Hz250 WattsPOWERLRMade in China150Hz50HzFILTEROFFONNORMALREVERSECROSSOVERFREQUENCYSUBWOOFERLEVEL100Hz SUBAUTOGREEN: ONRED: STAND-BY Speaker-Level Inputs Speaker-Level Outputs Line-Level Full-Range Inputs Line-Level Subwoofer (SUB) Input Phase Switch Music-Sense On/Off Switch LED Indicator High-Cut (Low-Pass) Filter Switch Crossover Frequency Control Subwoofer Level Control Master Power Switch AC Power CordHKP1209 SUB12 OM 10/23/02 9:28 PM Page 83H HK KS SU UB B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n AMPLIFIER PANEL CONTROLS AND CONNECTIONS 3AMPLIFIER PANEL CONTROLS AND CONNECTIONSand should only be used with a filtered sig-nal. If your receiver does not have a filteredsubwoofer output,you should use the Line-Level Full-Range Inputs instead. Phase Switch: This switch determineswhether the HKSUB 12 subwoofers piston-like action moves in and out in phase withthe main speakers. If the speakers are outof phase, the sound waves produced bythe subwoofer will be cancelled out, reduc-ing bass response.This phenomenondepends in part on the relative placementof the speakers in the room. In most cases,the Phase Switch should be left in theNORMAL position. However, it does noharm to experiment with the PhaseSwitch , and you may leave it in theposition that maximizes bass response. Music-Sense On/Off Switch:Whenthis switch is placed in the AUTO position,and when the Master Power Switch isturned on,the HKSUB 12 will automaticallyturn on or place itself in the Standby mode,depending on whether it is receiving an audiosignal.When this switch is placed in the ONposition,the HKSUB 12 will remain on,whether or not it is receiving an audio signal. LED Indicator: This LED indicateswhether the HKSUB 12 is in the ONor STANDBY state when used with the Music-Sense On/Off Switch inthe AUTO position.The LED is lit greento indicate that the HKSUB 12 is receivingan audio signal and is turned on, and theLED is lit red to indicate that no signal isbeing received and the HKSUB 12 is inStandby mode.When the Music-Sense On/Off Switch is in the ON position, the LED will be lit green, whether or not an audio signal is present.When the Master Power Switch isturned off, the LED goes dark, no matterwhich position the Music-Sense On/OffSwitch is in. High-Cut (Low-Pass) Filter Switch:Placing this switch in the ON position acti-vates circuitry that filters out all audio inputsignals above the setting of the CrossoverFrequency Control .This allows theHKSUB 12 to focus its power on reproduc-ing the low-frequency portion of the signal,avoiding inefficiency and distortion. Engagethis filter when using the Speaker-LevelInputs , or when using the Line-LevelFull-Range Inputs , unless your receiv-er or processor processes its line-level out-put using a low-pass filter.The filter has noeffect when the SUB Input is used. Crossover Frequency Control: Adjustthis control to set the highest frequency theHKSUB 12 will reproduce.You shouldbegin by setting it slightly above the lowest frequency that your main speakersare capable of reproducing.You may safely adjust the crossover frequency later as you listen to different programmaterials.This control will have no effect ifyou are using the Line-Level Subwoofer(SUB) Input , or if you have set theHigh-Cut (Low-Pass) Filter Switch to the OFF position. See page 14 formore information on adjusting thecrossover setting. Subwoofer-Level Control: Volumemay be adjusted using the Subwoofer-Level Control.Turn the control clockwise to increase the HKSUB 12s volume, orcounterclockwise to decrease it. Master Power Switch: Press thisrocker switch at the “” mark to power-onthe HKSUB 12 subwoofer.The HKSUB 12will then be either in the Standby mode orcompletely on, depending on the positionof the Music-Sense On/Off Switch . AC Power Cord: Plug this cordinto an active, unswitched electrical outlet for proper operation of the HKSUB 12.The cord should not be plugged into the accessory outlets found on some audiocomponents.4H HK KS SU UB B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n 4 SPEAKER CONNECTION GUIDESPEAKER CONNECTION GUIDEAnalog Receiver/Processor Speaker-Level ConnectionsUse this installation method for analog receivers or processors that do not have digital processing or bass-management programming,and where the receiver/processordoes not have a subwoofer output,or a volume-controlled preamp (line-) level output:Connect your receiver or amplifiers front left and right speaker terminals to the left and right Speaker-Level Input terminals on the HKSUB 12 subwoofer that are marked “High Level In.” Connect the left and right Speaker-Level Output terminals on the HKSUB 12 subwooferthat are marked “High Level Out” to the corresponding terminals on the back of your front left and right speakers.Connect your receiver or amplifiers center, surround, and surround back speaker terminals to the corresponding terminals on the back of your centerand surround speakers.When all connections have been made,plug the AC Power Cord on the subwoofer into an AC outlet.Front LeftSurround LeftSurroundBack LeftCenterFront RightSurround RightSurroundBack RightSurroundBack LeftSurroundBack RightReceiveror Amplifier + + + + +HKSUB 12SubwooferRLSurroundRightFrontRightSurroundLeftFrontLeftCenterHKP1209 SUB12 OM 10/23/02 9:28 PM Page 125H HK KS SU UB B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n SPEAKER CONNECTION GUIDE 5SPEAKER CONNECTION GUIDESubwooferOutFrontLeftSurroundLeftFrontRightSurroundRightHKSUB 12SubwooferCenterLine-LevelLR + + + + +SurroundBack LeftSurroundBack RightSurroundBack LeftSurroundBack RightSurroundRightFrontRightSurroundLeftFrontLeftCenterReceiver or AmplifierAnalog Receiver/Processor Line-Level ConnectionsUse this installation method for analog receivers or processors that do not have digital processing or bass-management programming,and where the receiver/processor isequipped with an unfiltered subwooferoutput, or a volume-controlled preamp(line-) level output:Use the supplied RCA-type patch cord toconnect the line-level subwoofer output onyour receiveror amplifier to either the left orright Line-Level Full-Range Input onthe HKSUB 12 subwoofer. Use both the leftand right inputs on the subwoofer if yourreceiver or processor has both left and rightline-level outputs. (You will need to purchasea second 15-foot interconnect cable.)If your receiver is equipped with line-level out-puts but does not have a separate subwooferoutput,use a Y-adapter (not supplied) tobridge the receivers preamp output to themain amp input for that channel,and connectthe long end of the adapter to the corre-sponding line-level input on the HKSUB 12.IMPORTANT: Do not use the SUB Input on the subwoofer with analog receiversor processors that have a full-range sub-woofer output, such as models that haveDolby Pro Logic* surround processing,but not Dolby Digital processing. However,if your analog receiver or processor has a filtered subwoofer output, such as someTHX-certified models, you may connect it to the SUB Input .Consult your receiversor processors owners manual for more information.Make sure that you have configured your surround sound processor for “Subwoofer On. ”When all connections have been made, plugthe AC Power Cord on the subwooferinto an AC outlet.Connect each speaker to the correspondingspeaker terminals on your receiver or amplifier.6H HK KS SU UB B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n 6 SPEAKER CONNECTION GUIDE Connection to DigitalReceiver/ProcessorUse this installation method for analog receivers or processors that have Dolby Digital, DTS or other digital surround decoders andbass-management programming,or analog receivers or processorsthat have a filtered subwoofer output:Use the line-level input jack marked SUB for the Low-Frequency Effectschannel. Connect this jack to the subwoofer output or LFE output on your