Infinity-PS212W-sub-sm 电路图 维修手册.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 1 RadioFans.CN 收音机爱 好者资料库 PS212W250W Powered Sub Amp LINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotes US 120vac/60HzYes108-13212

7、0VrmsNormal Operation EU 230vac/50-60HzYes207-253230VrmsNormal operation, MOMS required ParameterSpecificationUnit QA Test Limits ConditionsNotes Amp Section Type (Class AB, D, other)Dn/an/a Load Impedance (speaker)4Ohmsn/aNominal AVG System impedance5.482Ohmsn/aAP Computed BW from 20 to 500Hz Min S

8、ystem imepdance3.688Ohmsn/a 26Hz Rated Output Power (120VAC)250Watts250Domestic version only 120 VAC-60 Hz AVG RMS Dynamic Power300320Reference200mV driven into LFE input Average RMS power, 3/20 Cycles 50 Hz, Driven 6dB above its input sensitivity , average of the RMS value for the first 4 consecuti

9、ve peaks THD Rated Power0.5%122K filter THD 1 Watt0.2%0.322K filter DC Offset10mV-DC30 Speaker Outputs Damping factor50DF20 Measured at amplifier board 90% of full power Measured at the speaker cable. 225 Watts THD 0.1 % 50 Hz Input Sensitivity Input Frequency50Hz50Nominal Freq. L or R13mVrms1dBTo 1

10、 WattSingle input driven LFE input6.38mVrms1dBTo 1 WattSingle input driven, LFE switch ON System 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 input Signal to Noise SNR-A-Weighted80dBA75relat

11、ive to 1WA-Weighting filter SNR-unweighted60dBr55relative to 1W22K filter Residual Noise FloorLP T T 15 Minutes Tx Features- LFE InputYES-functional Single RCA Connector Channel ID switchYESfunctional 4 Position switch, to select wireless channels External power supply requirements 18VDCfunctional S

12、ystem provided with Power supply model GPE- 152, delivering 18VDC 400mA Power comsumption Tx Standby Input Power1WattsReference120VAC line voltageRED LED Tx Standby input current0.019AmperesReference120VAC line voltageRED LED Tx Idle Power2.34WattsReference120VAC line voltage Unit in operation Locke

13、d to Rx section Solid GRN Tx Idle Power1.64WattsReference120VAC line voltageUnit in operation NOT locked to Rx section Other 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.

14、 ALL SPECS SHOULD BE MEASURED AT NOMINAL LINE VOLTAGE. PS212W subwoofer 3 PACKAGING PS212W subwoofer 4 PS210W,PS212W (120V) Rear Panel CONTROLS ANDCONNECTIONS Wireless ID Code Low-Pass On Off L R Green: Sub On Orange: Sub On and Wireless Link Active Red: Standby Antenna Low-Pass Crossover Phase Leve

15、l Sub In OnOff LFE MinMax Power Switch Line-Level Input LFE Input Subwoofer ID-Code Selector Status LED Low-Pass Selector (Wireless Input Only) Crossover Adjustment Subwoofer-Level Control Phase Switch Antenna Transmitter Antenna Transmitter Power Supply Input Transmitter ID-Code Selector Transmitte

16、r Sub Input Sub In ID CODE DC18V 1 2 3 4 PS212W.PS210W.OM 5/28/08 4:48 PM Page 4 PS212W subwoofer 5 PS210W,PS212W (120V) SYSTEMCONNECTIONS Choose either Wireless or Wired Connection;then follow the appropriate instructions. WIRELESS If your receiver/processor does not contain a Dolby Digital or DTS

17、processor,but has subwoofer outputs: Connecting the Subwoofer for Wired Applications If you have 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. WIRED Connecting

18、 the Subwoofer for Wireless Applications Step 1. Connect a subwoofer cable from the subwoofer or LFE 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 t

19、he Transmitter Antenna is extended upward. Step 3. Set the ID Code on the transmitter and subwoofer to 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 conn

20、ect a full-range output (such as a preamp output or second-room output) from an A/V receiver or processor. In 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.

21、 Sub In ID CODE DC18V 1 2 3 4 PS212W.PS210W.OM 5/28/08 4:48 PM Page 5 PS212W subwoofer 6 PS210W,PS212W (120V) that the RCA cable from the source to subwoofer (wired connection) or transmitter (wireless connection) is functioning properly and that it is fully inserted at both ends,or that the Transmi

22、tter ID-Code Selector and the Subwoofer ID-Code Selector are set to the same channel. Once you have a green or orange LED on the subwoofer,turn your Subwoofer-Level Control up halfway so that the knob indicator points up.You should now be hearing bass information coming from the subwoofer. Adjust Le

23、vel Set the overall volume control of the preamplifier or stereo to a com- fortable level.Adjust the Subwoofer-Level Control until you obtain a pleasing blend of bass.Bass response should not overpower the room but rather be adjusted so there is a harmonious blend across the entire musical range.Man

24、y users have a tendency to set the sub- woofer volume too loud,adhering to the belief that a subwoofer is there to produce lots of bass.This is not entirely true.A subwoofer is there to enhance bass,extending the response of the entire system so the bass can be felt,as well as heard.However,overall

25、balance must be maintained or the music will not sound natural.An experienced listener will set the volume of the subwoofer so that its impact on bass response is always there but is never obtrusive. Phase Control The Phase Switch determines whether the subwoofer speakers piston-like action moves in

26、 and out with the main speakers,0,or opposite the main speakers,180.Proper phase adjustment depends on several variables such as room size,subwoofer placement and listening position.Adjust the phase switch to maximize bass output at the listening position. Crossover Adjustment The Crossover Adjustme

27、nt Control determines the highest frequency at which the subwoofer reproduces sounds.If your main speakers can comfortably reproduce some 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 s

28、ounds required by todays films and music.If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies,set the Crossover Adjustment control to a higher setting,between 120Hz and 150Hz. NOTE: This control will have no effect if the LFE Input is used (wired connection) o

29、r if the Low-Pass Selector is in the “Off” position (wireless connection).If you have a Dolby Digital or DTS processor/receiver,the Low-Pass Frequency is set by the processor/receiver. Consult your owners manual to learn how to view or change this setting. ID Codes In the unlikely event that you exp

30、erience interference when operating the system,or if you have more than one set of subwoofer transmitters and receivers in operation,you may change the channel in which the system operates.On both the transmitter module and the subwoofer, there is a four-position ID-Code Selector.Try setting both se

31、lectors 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 system wont function properly unless the positions match. A maximum of two subwoofers,at least 10 apart,can be operated using the same transmitter.Simp

32、ly set the channel selector on the transmitter and on the two subwoofers to the same channel. OPERATION Power On Connect your signal source (such as an A/V receiver or preamplifier) to the transmitter (if using a wireless connection) or to the subwoofer (if using a wired connection).Two single-RCA c

33、ords are provided.While you would ordinarily use the short cable to connect to the transmitter,or the long one to connect to the subwoofer,either cable can be used,depending on proximity to the signal source.There is no need or benefit gained from connecting the same source to both the transmitter a

34、nd the subwoofer. However,you could connect two separate sources to the subwoofer by utilizing both its wired and wireless connections.Both signals will essentially be mixed and output by the subwoofer. Plug your transmitters (if using a wireless connection) and subwoofers AC cord into a wall outlet

35、.Do not use the outlets on the back of the receiver for the subwoofer. Initially set the Subwoofer-Level Control to the “Min”position. Turn on your sub by pressing the Power Switch on the rear panel. Turn on your entire audio system and start a CD or movie soundtrack at a moderate level. Auto On/Sta

36、ndby Transmitter (Wireless Connection Only):The Status LED (not shown) will be lit in red when the unit is in Standby mode.When the transmitter receives an audio signal from the source,it will immediately turn on and the LED will turn to blinking green or solid green: RED = STANDBY (No signal detect

37、ed,transmitter off) GREEN (BLINKING) = Transmitter is ON but has not established a link with the wireless sub GREEN (SOLID) = Transmitter is ON and has already established a link with the wireless sub The transmitter will automatically enter Standby mode after approxi- mately 10 minutes when no sign

38、al is detected from your system. Subwoofer: With the Power Switch in the “On”position,the Status LED on the back panel will remain lit to indicate the On/Standby mode of the subwoofer. RED = STANDBY (No signal detected,Amp Off) GREEN = SUB ON (Wired signal detected,Amp On) ORANGE = SUB ON (Wireless

39、link with transmitter active) The subwoofer will automatically enter Standby mode after approximately 10 minutes when no signal is detected from your system.The subwoofer will then power on instantly when a signal is detected.During periods of normal use,the Power Switch can be left on.You may turn

40、off the Power Switch for extended periods of nonoperation,e.g.,when you are away on vacation. Getting Started Confirm that the Status LED on the transmitter is on (red or green), the Status LED on the subwoofer is on (red,orange or green) and an RCA cable is connected from a source unit to either th

41、e LFE Input of the subwoofer or transmitter or L and R inputs on the subwoofer.Play a CD or video.Use a selection that has ample bass information.If using a wireless connection,the Status LED on the transmitter should be lit solid green,and the Status LED on the subwoofer should turn orange if conne

42、cted wirelessly.If the LED on the transmitter is blinking green and the LED on the subwoofer is in red or green,a wireless link has not been established between the transmitter and the subwoofer.If connecting directly to the subwoofer without using the wireless link,the Status LED on the subwoofer s

43、hould be lit green.If the LED on the subwoofer remains red,check PS212W.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 needed: Function/signal generator/sweep generator Integrated Amplifier Multimeter Speaker cable

44、s 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 PS212W Transmitter. Assure the power supply has been plugged in and a Red or blinking Green LED is

45、 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 position does not matter. Low Pass switch should be OFF. “ID Code” switch position should be 1. 4)

46、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 on Sub Amp plate should be momentarily Green, then Orange. 7) Turn LEVEL control full clockwise

47、 (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 Function (Direct connection - No Transmitter) 9) From a mono output signal generator, OFF at thi

48、s 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 should 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 LEVEL control full clockwise (MAX); immediate and vigorous bass response should be heard and