Infinity-PS212W-sub-sm 维修电路原理图.pdf

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1、 PS212W PS212W Wireless Powered Subwoofer Wireless Powered Subwoofer Service Manual Infinity Systems, Inc. 250 Crossways Park Dr. Released 2008 Woodbury, New York 11797 Rev0 8/2008 Discontinued XXXX RadioFans.CN 收音机爱 好者资料库 - CONTENTS - BASIC SPECIFICATIONS .1 DETAILED SPECIFICATIONS .2 PACKAGING.4 C

2、ONTROLS/CONNECTIONS.5 OPERATION .7 SUBWOOFER EXPLODED VIEW/PARTS LIST.8 TRANSMITTER EXPLODED VIEW/PARTS LIST.9 TEST SET-UP AND PROCEDURE.10 AMPLIFIER BLOCK DIAGRAM.12 SUBWOOFER AMP TROUBLESHOOTING. 13 TRANSMITTER TROUBLESHOOTING. .14 RECEIVER PCB TROUBLESHOOTING. 15 P.C.B. DRAWINGS.16 ELECTRICAL PAR

3、TS LIST .23 IC/TRANSISTOR PINOUTS.29 SCHEMATICS.43 Basic Specifications Infinity PS212W Frequency Response: 25Hz 150Hz (3dB) Amplifier RMS Power: 400 Watts Amplifier Peak Power *: 700 Watts Crossover Frequencies: 50Hz 150Hz, continuously adjustable when activated Driver: 12 (305mm) MMD RF Operating

4、Frequency: 2.4GHz Operating Range: Up to 75 (23m), depending upon conditions Subwoofer Dimensions (H x W x D): 18 x 14-3/8 x 18-3/4 (457mm x 365mm x 476mm) Subwoofer Weight: 44.7 lb (20.3kg) Transmitter Dimensions: 1-1/8 x 4-7/8 x 3-7/8 (29mm x 124mm x 98mm) Transmitter Weight: 0.5 lb (0.2kg) Infini

5、ty continually strives to update and improve 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. * The peak dynamic power is measured by recording the highest center-to-pe

6、ak voltage measured across the output of a resistive load equal to minimum impedance of the transducer, using a 50Hz sine wave burst, 3 cycles on, 17 cycles off. PS212W subwoofer RadioFans.CN 收音机爱 好者资料库PS212W250W Powered Sub Amp LINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotesUS 120vac/60HzYes108-132120Vrm

7、sNormal OperationEU 230vac/50-60HzYes207-253230VrmsNormal operation, MOMS requiredParameterSpecificationUnitQA Test LimitsConditionsNotesAmp SectionType (Class AB, D, other)Dn/an/aLoad Impedance (speaker)4Ohmsn/aNominalAVG System impedance5.482Ohmsn/aAP Computed BW from 20 to 500HzMin System imepdan

8、ce3.688Ohmsn/a 26HzRated Output Power (120VAC)250Watts250Domestic version only 120 VAC-60 HzAVG RMS Dynamic Power300320Reference200mV driven into LFE inputAverage RMS power, 3/20 Cycles 50 Hz, Driven6dB above its input sensitivity , average of the RMS value for the first 4 consecutive peaksTHD Rated

9、 Power0.5%122K filterTHD 1 Watt0.2%0.322K filterDC Offset10mV-DC30 Speaker OutputsDamping factor50DF20Measured at amplifier board 90% of full powerMeasured at the speaker cable. 225 Watts THD 0.1 % 50 HzInput SensitivityInput Frequency50Hz50Nominal Freq.L or R13mVrms1dBTo 1 WattSingle input drivenLF

10、E input6.38mVrms1dBTo 1 WattSingle input driven, LFE switch ONSystem Gain (L or R inputs)43.7dBReferenceSingle input driven L or R inputs (Local inputs)System Gain (LFE input)50dBReferenceSingle input driven LFE Mode local inputSignal to NoiseSNR-A-Weighted80dBA75relative to 1WA-Weighting filterSNR-

11、unweighted60dBr55relative to 1W22K filterResidual Noise FloorLP T T 15 MinutesTx Features-LFE InputYES-functional Single RCA ConnectorChannel ID switchYESfunctional 4 Position switch, to select wireless channelsExternal power supply requirements18VDCfunctional System provided with Power supply model

12、 GPE-152, delivering 18VDC 400mAPower comsumptionTx Standby Input Power1WattsReference120VAC line voltageRED LEDTx Standby input current0.019AmperesReference120VAC line voltageRED LEDTx Idle Power2.34WattsReference120VAC line voltageUnit in operation Locked to Rx section Solid GRNTx Idle Power1.64Wa

13、ttsReference120VAC line voltageUnit in operation NOT locked to Rx sectionOther Parameters/Notes:1. Volume control should be at the input buffer stage in order to lessen the possibility of clipping the input section with highly dynamic audio material.2. ALL SPECS SHOULD BE MEASURED AT NOMINAL LINE VO

14、LTAGE. PS212W subwoofer 3PACKAGING PS212W subwoofer 4PS210W,PS212W (120V)Rear PanelCONTROLS ANDCONNECTIONSWirelessID CodeLow-PassOnOffLRGreen: Sub On Orange: Sub On andWireless Link ActiveRed: StandbyAntennaLow-PassCrossoverPhaseLevelSub InOnOffLFEMinMaxPower Switch Line-Level Input LFE Input Subwoo

15、fer ID-Code Selector Status LEDLow-Pass Selector (Wireless Input Only)Crossover AdjustmentSubwoofer-Level Control Phase SwitchAntennaTransmitter AntennaTransmitter Power Supply InputTransmitter ID-Code SelectorTransmitter Sub InputSub InIDCODEDC18V1 2 3 4PS212W.PS210W.OM 5/28/08 4:48 PM Page 4 PS212

16、W subwoofer 5PS210W,PS212W (120V)SYSTEMCONNECTIONSChoose either Wireless or Wired Connection;then follow the appropriate instructions.WIRELESSIf your receiver/processor does not contain a Dolby Digital or DTS processor,but has subwoofer outputs:Connecting the Subwoofer for Wired ApplicationsIf you h

17、ave a DolbyDigital or DTSreceiver/processor with a low-frequency effects (LFE) or subwoofer output:NOTE: If your receiver/processor has only one sub out,you may use either the L or R input.WIREDConnecting the Subwoofer for Wireless ApplicationsStep 1.Connect a subwoofer cable from the subwoofer or L

18、FE output of your receiver to the Sub In on the transmitter.Step 2.Plug the transmitter module into the wall outlet,and connect the included power supply and power cord to the transmitter .Make sure the Transmitter Antenna is extended upward.Step 3.Set the ID Code on the transmitter and subwoofer to

19、 the same position,as described on page 6.When connected properly,the LED on the rear of the subwoofer will be orange.Step 4.Set the Low-Pass Selector to the “Off”position.NOTE:You may also connect a full-range output (such as a preampoutput or second-room output) from an A/V receiver or processor.I

20、n that case,set the Low-Pass Selector to the “On”position,and set the Crossover Adjustment as described on page 6.Some receivers have two subwoofer outputs.In that case,use either connector.Sub InIDCODEDC18V1 2 3 4PS212W.PS210W.OM 5/28/08 4:48 PM Page 5 PS212W subwoofer 6PS210W,PS212W (120V)that the

21、 RCA cable from the source to subwoofer (wired connection) ortransmitter (wireless connection) is functioning properly and that it isfully inserted at both ends,or that the Transmitter ID-Code Selector and the Subwoofer ID-Code Selector are set to the same channel.Once you have a green or orange LED

22、 on the subwoofer,turn yourSubwoofer-Level Control up halfway so that the knob indicatorpoints up.You should now be hearing bass information coming fromthe subwoofer.Adjust LevelSet the overall volume control of the preamplifier or stereo to a com-fortable level.Adjust the Subwoofer-Level Control un

23、til you obtain a pleasing blend of bass.Bass response should not overpower theroom but rather be adjusted so there is a harmonious blend across the entire musical range.Many users have a tendency to set the sub-woofer volume too loud,adhering to the belief that a subwoofer isthere to produce lots of

24、 bass.This is not entirely true.A subwoofer isthere to enhance bass,extending the response of the entire system so the bass can be felt,as well as heard.However,overall balance must be maintained or the music will not sound natural.An experiencedlistener will set the volume of the subwoofer so that

25、its impact on bassresponse is always there but is never obtrusive.Phase ControlThe Phase Switch determines whether the subwoofer speakers piston-like action moves in and out with the main speakers,0,or opposite the main speakers,180.Proper phase adjustment depends on several variables such as room s

26、ize,subwoofer placement and listening position.Adjust the phase switch to maximize bass output at the listening position.Crossover AdjustmentThe Crossover Adjustment Control determines the highest frequencyat which the subwoofer reproduces sounds.If your main speakers can comfortably reproduce some

27、low-frequency sounds, set this control to a lower frequency setting, between 50Hz and 100Hz.This will con-centrate the subwoofers efforts on the ultradeep bass sounds requiredby todays films and music.If you are using smaller bookshelf speakersthat do not extend to the lower bass frequencies,set the

28、 CrossoverAdjustment control to a higher setting,between 120Hz and 150Hz.NOTE: This control will have no effect if the LFE Input is used(wired connection) or if the Low-Pass Selector is in the “Off”position (wireless connection).If you have a Dolby Digital or DTSprocessor/receiver,the Low-Pass Frequ

29、ency is set by the processor/receiver.Consult your owners manual to learn how to view or change this setting.ID CodesIn the unlikely event that you experience interference when operatingthe system,or if you have more than one set of subwoofer transmittersand receivers in operation,you may change the

30、 channel in which thesystem operates.On both the transmitter module and the subwoofer,there is a four-position ID-Code Selector.Try setting both selectors to a different position.Make sure that the Transmitter ID-Code Selector and the Subwoofer ID-Code Selector are set to the same position;the syste

31、m wont function properly unless the positions match.A maximum of two subwoofers,at least 10 apart,can be operatedusing the same transmitter.Simply set the channel selector on thetransmitter and on the two subwoofers to the same channel.OPERATIONPower OnConnect your signal source (such as an A/V rece

32、iver or preamplifier) tothe transmitter (if using a wireless connection) or to the subwoofer (if usinga wired connection).Two single-RCA cords are provided.While you wouldordinarily use the short cable to connect to the transmitter,or the long one to connect to the subwoofer,either cable can be used

33、,depending onproximity to the signal source.There is no need or benefit gained fromconnecting the same source to both the transmitter and the subwoofer.However,you could connect two separate sources to the subwoofer by utilizing both its wired and wireless connections.Both signals will essentiallybe

34、 mixed and output by the subwoofer.Plug your transmitters (if using a wireless connection) and subwoofers ACcord into a wall outlet.Do not use the outlets on the back of the receiverfor the subwoofer.Initially set the Subwoofer-Level Control to the “Min”position.Turn on your sub by pressing the Powe

35、r Switch on the rear panel.Turn on your entire audio system and start a CD or movie soundtrack at a moderate level.Auto On/StandbyTransmitter (Wireless Connection Only):The Status LED (not shown)will be lit in red when the unit is in Standby mode.When the transmitterreceives an audio signal from the

36、 source,it will immediately turn onand the LED will turn to blinking green or solid green:RED = STANDBY (No signal detected,transmitter off) GREEN (BLINKING) = Transmitter is ON but has not established a link with the wireless subGREEN (SOLID) = Transmitter is ON and has already established a link w

37、ith the wireless sub The transmitter will automatically enter Standby mode after approxi-mately 10 minutes when no signal is detected from your system.Subwoofer: With the Power Switch in the “On”position,the StatusLED on the back panel will remain lit to indicate the On/Standbymode of the subwoofer.

38、RED = STANDBY (No signal detected,Amp Off) GREEN = SUB ON (Wired signal detected,Amp On) ORANGE = SUB ON (Wireless link with transmitter active) The subwoofer will automatically enter Standby mode after approximately10 minutes when no signal is detected from your system.The subwooferwill then power

39、on instantly when a signal is detected.During periodsof normal use,the Power Switch can be left on.You may turn offthe Power Switch for extended periods of nonoperation,e.g.,whenyou are away on vacation.Getting StartedConfirm that the Status LED on the transmitter is on (red or green),the Status LED

40、 on the subwoofer is on (red,orange or green) andan RCA cable is connected from a source unit to either the LFE Inputof the subwoofer or transmitter or L and R inputs on thesubwoofer.Play a CD or video.Use a selection that has ample bassinformation.If using a wireless connection,the Status LED on th

41、etransmitter should be lit solid green,and the Status LED on thesubwoofer should turn orange if connected wirelessly.If the LED onthe transmitter is blinking green and the LED on the subwoofer is in red or green,a wireless link has not been established between thetransmitter and the subwoofer.If con

42、necting directly to the subwooferwithout using the wireless link,the Status LED on the subwoofershould be lit green.If the LED on the subwoofer remains red,checkPS212W.PS210W.OM 5/28/08 4:48 PM Page 6 PS212W subwoofer 7 PS212W subwoofer 8 PS212W subwoofer 9 PS212W Test Set Up and Procedure Equipment

43、 needed: Function/signal generator/sweep generator Integrated Amplifier Multimeter Speaker cables PS212W Transmitter, power supply General Unit Function + Transmitter (UUT = Unit Under Test) 1) From a mono output signal generator, OFF at this time, connect an RCA cable to the “Sub in” jack on the PS

44、212W Transmitter. Assure the power supply has been plugged in and a Red or blinking Green LED is now showing on the transmitter. Default “ID Code” switch position is 1. 2) Position and plug in the PS212W Subwoofer nearby (less than 75 away), power switch should be OFF. 3) CROSSOVER, PHASE switch pos

45、ition does not matter. Low Pass switch should be OFF. “ID Code” switch position should be 1. 4) Turn the LEVEL control on the UUT to completely counterclockwise (MIN). 5) Turn on signal generator; adjust to 100mV, 50 Hz. LED on Transmitter should now be steady Green. 6) Turn the power switch ON. LED

46、 on Sub Amp plate should be momentarily Green, then Orange. 7) Turn LEVEL control full clockwise (MAX); immediate and vigorous bass response should be heard and felt from port tube opening. 8) Turn off generator, turn LEVEL control full counterclockwise (MIN), and disconnect RCA cable. General Unit

47、Function (Direct connection - No Transmitter) 9) From a mono output signal generator, OFF at this time, connect an RCA cable to the L/R jacks on the PS212W Subwoofer.; Use a Y-cable to connect to both inputs; power switch should be OFF. 10) PHASE switch position does not matter. CROSSOVER control sh

48、ould be set at “150Hz”. Low Pass switch position does not matter. 11) Turn the LEVEL control on the UUT to completely counterclockwise (MIN). 12) Turn on signal generator; adjust to 100mV, 50 Hz. 13) Turn the power switch ON. LED on top of Subwoofer should be momentarily Red, then Green. 14) Turn LE

49、VEL control full clockwise (MAX); immediate and vigorous bass response should be heard and felt from port tube opening. 15) Turn off generator, turn LEVEL control full counterclockwise (MIN), and disconnect RCA cable. PS212W subwoofer 10 Sweep Function 1) Follow steps 9-14 above, using a sweep gener

50、ator as a signal source. 2) Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove woofer and test. Driver Function 1) Remove woofer from cabinet; detach + and - wire clips. 2) Check DC resist