Infinity-CSW10-sub-sm 维修电路原理图.pdf

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1、 BetaBeta SW Series SW Series CSW-10 Subwoofer CSW-10 Subwoofer SERVICE MANUAL Infinity Systems, 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 AMPLIFIER ACCESS.3 CONTROLS AND CONNECTIONS.4 OPERA

2、TION.6 EXPLODED VIEW/PARTS LIST.7 TEST SET UP AND PROCEDURE.8 BULLETIN INF2004-02.9 BLOCK DIAGRAM.11 PCB DRAWINGS.12 ELECTRICAL PARTS LIST (120/230v) .20 SEMICONDUCTOR PINOUTS.25 SCHEMATICS (120/230v) .26 PACKING.30 Basic Specifications CSW-10 Powered Subwoofer Frequency Range: 22Hz 150Hz (-3dB) 20H

3、z 150Hz (-6dB) Max Amplifier Output: 650 watts RMS Low-Frequency Driver: 10 (254mm) C.M.M.D. Crossover Frequency: 50 -150 Hz (24dB/octave, continuously variable) Dimensions (H x W x D): 14 x 13-1/4 x 15-3/8 (356mm x 337mm x 391mm) Weight: 52 lb (23.6 kg) Infinity continually strives to update and im

4、prove existing 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. CSW-10 CSW-10 RadioFans.CN 收音机爱 好者资料库CSW-10450W Powered Sub/ Plate Amp LINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotesU

5、S 120VAC/60HzYes108-132120VrmsNormal OperationEU 230VAC/50-60HzYes207-264230VrmsNormal operation, MOMS requiredParameterSpecificationUnitQA Test LimitsConditionsNotesAmp SectionType (Class AB, D, other)Dn/an/aBridge type amplifier, None of the speaker terminals must be connected to system GND at any

6、 time.Load Impedance (speaker)4Ohmsn/aNominalRated Output Power450Watts4251 input drivenTHD Rated Power0.5%122K filterTHD 1 Watt0.1%0.222K filterDynamic Power450Watts430Power is the average measurement of the first four consecutive peaks of the burst signal3/20 Cycles 50 Hz, burst test into 4 Ohms,

7、input driven 6dB above its maximum sensitivity, volume level at Maximum, RABOS Section OFFDC Offset80mV-DC100 Speaker OutputsDamping factor20DF15Measured at amplifier board Measured at the speaker cable. 200 Watts, measured at speaker output terminals located at the amp board.Input SensitivityInput

8、Frequency50Hz30Nominal Freq.Left or Right inputs 10.29mVrms2dBTo 1 WattSingle input driven, Ap Zo=600 Ohms, LP ON, RABOS OFF, Volume ctrl & crossover at maxLeft & Right with LFE or LP filter OFF Mode selected10.17mVrms2dBTo 1 WattSingle input driven , Ap Zo=600 Ohms, LP OFF, RABOS OFF, Volume ctrl &

9、 crossover at maxSpeaker/Hi Level Input158mVrms2dBTo 1 WattSingle input driven, Ap Zo=25 Ohms, Normal, RABOS OFF, Volume ctrl & crossover at maxSignal to NoiseSNR-A-Weighted100dBA95Relative to rated power (400 Watts) A-Weighting filterSNR-unweighted95dBr90Relative to rated power (400 Watts) 22K filt

10、erSNR rel. 1W-unweighted70dBr65Relative to 1W Output22K filterResidual Noise Floor0.5mVrms1Volume max, using RMS reading DMM/VOM (or A/P)Residual Noise Floor0.5 mVrms(max)1Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)Input ImpedanceLine Input (L, R,LFE)10Kohmsn/aNominalSpeake

11、r/Hi Level Input10Kohmsn/aNominalFiltersLP 4th order variable 50-150 Hz 10Refer to AP graph 1Subsonic filter (HPF) 3rd OrdeFixed Hz 10Refer to AP graph 1Low pass filter OFFFixed Hz 10L or R input driven, LP Filter OFFRefer to AP graph 1BOSFrequency Control-Range20-80 Hzfunctional 21 detent pot (0.1

12、oct. steps)Refer to AP graph 2Level Control-Range-14.1 to 0 dB functional 21 detent pot (0.5dB steps)Refer to AP graph 3Width(Q) Control -Range4.5% to 49.5% octavefunctional 21 detent pot (5steps/0.1 octave)Refer to AP graph 4Limiter THD at Max. Output PowerYESn/afunctional Features-Auto - On -Off Y

13、ES-functional No switch to select the ATO mode is provided, Refer to ATO sectionPhase switch 0-180degfunctional Volume pot Taper (lin/log)LOG-functional A TaperVariable crossover 50-150 HzYESfunctional 4th Order LP Filter, 2nd order fix and 2nd order variable.HP Speaker out YESfunctional Pass throug

14、h from the speaker input sectionLP On- Off Select switchYES-functional Disables LP filter, intended for LFE Input ConfigurationLine In (L,R) & LFEYES-functional Dual RCA jack, L or R is used in LFE modeSpkr/Hi Level InYES-functional Binding post connector L&RCSW-10 CSW-10 2ParameterSpecificationUnit

15、QA Test LimitsConditionsNotesSignal Sensing (ATO)Auto-Turn-On (yes/no)YESfunctional Auto - on selection switch in Auto ATO Input test frequency50Hzfunctional ATO Level LFE Input2.5mVfunctional ATO Level Speaker in30mVfunctional ATO Turn-on time2secondsfunctional Amp connected and AC on, then input s

16、ignal appliedAuto Mute/ Turn-OFF Time15minutes17(T) Time before muting, after input signal is removedAuto turn of time (T) must be 10 T 17 MinutesPower on Delay time2sec.4AC Power AppliedTransients/PopsATO Transient5mV-peakn/a Speaker OutputsTurn-on Transient50mV-peak1V-pk-pk Speaker OutputsAC Line

17、cycled from OFF to ONTurn-off Transient50mV-peak1V-pk-pk Speaker OutputsAC Line cycled from ON to OFFEfficiencyEfficiency68%65400W of output powerNominal Line voltage 120 VACStand-by Input Power1820 nominal line voltage, Amp in OFF state, RED LED activatedMaximum allowable input power LED in RED, Cl

18、ass D inactive Stand-by Input Power22Watts25 nom. line voltage, Amp in On state, Green LED activatedMaximum allowable input power under nominal Input voltage and frequency, in stand-by mode (HOT or COLD operation, LED GREEN). Class D active but no signal applied.Power Cons. 400W584Watts615 nom. line

19、 voltage400 Watts into 4 Ohms nominal line voltageProtectionShort Circuit Protection NON/AThermal Protection YESfunctional 1/8 max unclipped PowerTemperature rise in accessible metal parts should not exceed 35K rise for domestic version or 30K rise for European versions (refer to requirements sheet)

20、. Unit is protected for over-temperature conditions DC Offset ProtectionYES-DC present at Speaker Out leadsRelay opens during a DC output conditionLine Fuse RatingUSA-Domestic 5AmpsType-T or Slo Blo-250 VEU2.5AmpsType-T or Slo Blo-250 VInternal fuse with UL/SEMKO rated holderCSW-10 CSW-10 3CSW-10Rea

21、r PanelCONTROLS ANDCONNECTIONSLine-Level InputsPower IndicatorSubwoofer Level (Volume) ControlCrossover AdjustmentPhase SwitchNormal/LFE SelectorPower SwitchBass Optimization Controls (see page 5)Bass Optimization System SelectorCenter-Frequency AdjustmentBass Optimization System Level AdjustmentBas

22、s Optimization System Bandwidth AdjustmentCSW-10 CSW-10 4CSW-10CONNECTIONSIf you have a Dolby* Digital or DTSreceiver/processorwith a low-frequency-effects (LFE) output: Set Normal/LFE Switch to LFE.NOTE:In this case,you do not need to use a Y connector.Simplyconnect the LFE output on your receiver/

23、processor to either the left or right input on the subwoofer.SUBWOOFER ORLFE OUTPUTIf your receiver/processor has subwoofer outputs for the left and right channels: Set Normal/LFE Switch to Normal.NOTE:Some receivers have a single subwoofer output (do not confusethis with a single LFE output as desc

24、ribed to the left).In that case,it isrecommended that you use a Y connector (not included) to maximizeperformance.CSW-10 CSW-10 5CSW-10Power OnPlug your subwoofersAC cord into a wall outlet.Do not use theoutlets on the back of the receiver.Initially set the Subwoofer Level (Volume) Control to the “m

25、in”position.Turn on your sub by pressing the Power Switch on the rear panel.Auto On/StandbyWith the Power Switch in the ON position,the PowerIndicator LED will remain backlit in red or green to indicate the On/Standby mode of the subwoofer.RED = STANDBY (No signal detected,Amp Off)GREEN = ON (Signal

26、 detected,Amp On)The subwoofer will automatically enter the Standby mode afterapproximately 10 minutes when no signal is detected from yoursystem.The subwoofer will then power ON instantly when asignal is detected.During periods of normal use,the PowerSwitch can be left on.You may turn off the Power

27、 Switch for extended periods of nonoperation,e.g.,when you are away on vacation.Adjust GainTurn on your entire audio system and start a CD or movie soundtrack at a moderate level.Turn up the Subwoofer Level(Volume) Control about half way.If no sound emanates fromthe subwoofer,check the AC-line cord

28、and input cables. Are theconnectors on the cables making proper contact? Is the AC plug connected to a “live”receptacle? Has the Power Switch been pressed to the “On”position? Once you have confirmed thatthe subwoofer is active,proceed by playing a CD,record orcassette.Use a selection that has ample

29、 bass information.Set the overall volume control of the preamplifier or stereo to acomfortable level. Adjust the Subwoofer Level (Volume) Control until you obtain a pleasing blend of bass.Bass response shouldnot overpower the room but rather be adjusted so there is aharmonious blend across the entir

30、e musical range.Many usershave a tendency to set the subwoofer volume too loud,adhering to the belief that a subwoofer is there to produce lotsof bass.This is not entirely true.A subwoofer is there to enhancebass,extending the response of the entire system so the basscan be felt as well as heard.How

31、ever,overall balance must be maintained or the music will not sound natural.Anexperienced listener will set the volume of the subwoofer so its impact on bass response is always there but never obtrusive.OPERATIONCrossover AdjustmentsNOTE: This control will have no effect if the Normal/LFE SelectorSw

32、itch is set to “LFE.”If you have a Dolby Digital or DTSprocessor/receiver,the Crossover Frequency is set by theprocessor/receiver.Consult your owners manual to learn how to view or change this setting.The Crossover Adjustment Control determines the highestfrequency at which the subwoofer reproduces

33、sounds.If your mainspeakers can comfortably reproduce some low-frequency sounds,set this control to a lower frequency setting, between 50Hzand 100Hz.This will concentrate the subwoofers efforts on theultradeep bass sounds required by todays films and music.If youare using smaller bookshelf speakers

34、that do not extend to thelower bass frequencies,set the Crossover Adjustment Control toa higher setting,between 120Hz and 150Hz.Phase ControlThe Phase Switch determines whether the subwooferspeakers piston-like action moves in and out with the mainspeakers,0,or opposite the main speakers,180.Proper

35、phaseadjustment depends on several variables such as room size,subwoofer placement and listener position.Adjust the phaseswitch to maximize bass output at the listening position.CSW-10 CSW-10 6CSW-10Exploded View9161183542107CSW-10EXPLODED VIEWInfinity Systems, 250 Crossways Park Drive, Woodbury, Ne

36、w York 117976/04ITEM NO.DESCRIPTIONQTY.PART NO.1.CSW-10 Amplifier1Not for Sale2.CSW-10 Cabinet1Not for Sale3.Trim Ring, 10” CSW-10 (Black)1352438-001Trim Ring, 10” CSW-10 (Beech/Cherry) 1352438-0024.Cup, Grille (Black)4333249-001Cup, Grille (Beech/Cherry)4333249-0035.Logo CSW-101351617-0016.Foot Ass

37、embly, Rubber, 4338037-002Blk w/Threaded InsertITEM NO.DESCRIPTIONQTY.PART NO.7.DD Screw (woofer), 10-32 x 1 FIL8217548.Screw (trim ring)6903802-016#8 x 1”, PB, HXS, ZINC9.Screw (amplifier)12900101-016#8 x 1”, PB, PPH, BLK10.Woofer, 10” Sub DCR=3.4 ohms 10% 1351508-00111.Grille Assembly, Frnt CSW-10

38、 (Black)1352332-003(Beech/Cherry)1352332-004Technical ManualCSW-10 CSW-10CSW-10 7 CSW-10 Test Set Up and Procedure SYSTEM AURAL SWEEP TEST Equipment needed: Function/signal generator/sweep generator Integrated Amplifier Multimeter RCA cables General Unit Function (UUT = Unit Under Test) Switches/kno

39、bs on the amplifier faceplate: Crossover Frequency Adjust full CW (150Hz) Phase switch either position RABOS On/Off switch OFF LFE switch - Normal 1. Remove the subwoofer grille. 2. From the signal generator, connect both right and left line level inputs (RCA jacks) to signal generator and UUT. Use

40、Y-cable if necessary from mono source. 3. On the amplifier, turn the LEVEL control full Counterclockwise (Min). 4. Turn on generator, adjust to 100mV, 50 Hz. 5. Plug in UUT; turn the power switch ON. Turn LEVEL control full Clockwise (Max). 6. LED should now be Green; aggressive bass response should

41、 be seen from woofer near maximum excursion. Sweep Function 1. Follow steps 1-6 above, using a sweep generator as a signal source. 2. Sweep generator from 20Hz to 1kHz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woof

42、er and test. Driver Function (Woofer) 1. Remove woofer from cabinet; detach + and - wire clips. 2. Check DC resistance of woofer; it should be 3.4 ohms 10%. 3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn

43、on generator and adjust so that speaker level output is 5.0V. 4. Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises. CSW-10 CSW-10 8 Service Bulletin Service Bulletin INF2004-02 September 2004 This is considered a Minor repair To: All Infinity Servi

44、ce Centers Model: Beta CSW-10 Subject: Premature Limiting A small number of CSW-10 subwoofers may limit the amplifer output prematurely when they are driven to high volume levels. This may result in the subwoofer “popping”, and then a lower than normal output. A normal output will not return until t

45、he volume is decreased, or the subwoofer is switched Off, then On again. In the event you receive a CSW-10 subwoofer with a complaint of “Premature Limiting When Driven At High Levels”, follow the procedure below to correct this condition: Synopsis: Add two diodes to the limiter section on the MAIN

46、PCB, D90 and D91. 1) Remove the amplifier assembly from the cabinet by removing the (12) screws located around the perimeter of the plate (Red circles in image); it will still be connected by the speaker wires. 2) Remove the (2) screws used to secure the plastic cover to the amp panel (Blue arrows i

47、n image), separate the panel from the plastic cover, and unplug the speaker wires from MAIN PCB (Red & Blk). 3) Remove the MAIN PCB from the faceplate: a. Remove the (5) screws used to secure the amp module to the front panel (Pointing fingers in image). b. Unplug P1 Signal Harness (Harness with whi

48、te wires) c. Remove ground wire (Black wire with ring terminal) d. Unplug Power Transformer wires (Red-White-Red) 4) Locate D90 & D91 trace locations close to the main power capacitors (refer to the image) 5) Solder two RLS4148 SMD Diodes in their designated areas, D90 and D91, Infinity part # 054-4

49、14803-100. IMPORTANT: POLARITY - Diodes should be soldered with their cathode facing into the amplifier assembly, anodes facing the PCB edge of the amplifier. You should be able to solder the diodes in place without PCB disassembly from the heatsink plate with care, and a long, pointed soldering tip

50、. 6) Re-Attach the MAIN PCB to the faceplate, following in reverse order items #3a-d. Assure that the power transformer wires are connected with White in the center and Red wires to the outer sides of the rectifier. Location of D90 & D91 (Installed) CSW-10 CSW-10 9 TESTING 7) Set the amplifier contr