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Klipsch SW12-I, Service Manual

The Klipsch SW12-I is a powerful and dynamic subwoofer that delivers deep, clear bass for an immersive audio experience. Ensure proper maintenance and troubleshooting with the free Service Manual available for download from manualshive.com. Get your manual today for expert guidance on optimizing your audio setup.

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Klipsch Subwoofer Amplifier Service Manual

KSAMM-002a

SW12-I PARTS LIST

(continued)

PART

VALUE/PART NUMBER

KLIPSCH PART #

C54

10µF 25V Electrolytic

C56

.1µF 125Vac

D1, D2, D3, D4, D11, D12

1N4002

D13, D14, D15, D16, D17

1N914

Q15, Q18

MJF15030

118733

Q16, Q17, Q19, Q20

2SC3281

118731

Q21, Q24

MJF15031

118734

Q22, Q23, Q25, Q26

2SA1302

118729

Q27

MPSA06

U11

UPC1237

118746

U12

MC1458

118743

U7

7815

118739

U9

7915

118740

L1

2µH

F2, F3

JUMPER

RLY1

AROMAT J51E-12 (Relay)

RCA PANEL 
SPEAKER INPUT JACKS
TRANSFORMER

PW-6582

118721

SW2 (Power) 
F1

5 Amp 250Vac Slow Blow

118348

TH1  (Thermal protection) 

ASAH  US-602S

BR1

GBPC 3502

DUAL VOLTAGE TRANSFORMER

PW-6661

118725

DUAL VOLTAGE SWITCH 115 to 230
CAPACITOR  (DUAL VOLTAGE MODEL) 

.047µF  300V

Page 11

Summary of Contents for SW12-I

Page 1: ...SERVICE MANUAL Subwoofer Amplifier Model SW12 I SW15 I KLIPSCH INC...

Page 2: ...2 I 2 Model SW15 I 2 THEORY OF OPERATION 3 INPUTS 3 SIGNAL CONDITIONING 3 COMPRESSION 3 DRIVER CIRCUIT 3 OUTPUT 3 OTHER FEATURES 4 ALIGNMENT PROCEDURES 5 Model SW12 I 5 Model SW15 I 6 TROUBLE SHOOTING...

Page 3: ...slope above 120 Hz High Pass Crossover Line outputs fixed at 80 Hz 6dB Octave slope Speaker outputs fixed at 120 Hz 6dB Octave slope Model SW15 I Input Sensitivity for Max Rated Output Line input 33m...

Page 4: ...nd is adjusted via R30 If adjusted correctly this circuit will limit the amplitude of the signal so the minimum amount of distortion in the form of clipping will occur at the output of the amplifier R...

Page 5: ...g the relay This is a protection feature to protect the speaker and amplifier from initial current surges The circuit also provides protection from over current conditions by de activating the relay w...

Page 6: ...under test 2 Connect the UUT unit under test to a 16 ohm load 3 Connect a signal generator to the RCA input of the amp 4 Set all controls on the UUT to their full clockwise position 5 Set the signal g...

Page 7: ...der test 2 Connect the UUT unit under test to a 16 ohm load 3 Connect a signal generator to the RCA input of the amp 4 Set all controls on the UUT to their full clockwise position 5 Set the signal gen...

Page 8: ...r transistors on filter driver board Replace transistors that are shorted 3 Check U7 and U9 for shorts 4 Check bridge rectifier in power supply circuit 5 Check transformer 6 Check filter capacitors C2...

Page 9: ...should be between 35 1 Vrms and 36 Vrms If this is correct connect an oscilloscope to the output signal and look for clipping If the voltage was too high re align amplifier per procedure on page 5 6 o...

Page 10: ...R20 2K R22 30 1K R28 R29 220K R30 R34 R50 10K VARIABLE R31 R32 R37 100K R33 R42 R68 R71 100 R38 43K 2 R39 180K 2 R43 R44 10K 2 R6 R8 R46 4 7K R47 R53 4 3K 3WATT R9 0 R49 33 2K R51 R67 1K R54 R62 1 1K...

Page 11: ...Q9 2SA1306B 118730 Q8 Q10 2SC3298B 118732 R100 R101 R102 R103 R110 R111 R112 R113 47 5WATT R114 4 7 3WATT R115 1 3WATT R116 R121 R126 R130 10K R117 R119 56K R118 22K R120 390 1WATT R122 R123 100K R125...

Page 12: ...81 118731 Q21 Q24 MJF15031 118734 Q22 Q23 Q25 Q26 2SA1302 118729 Q27 MPSA06 U11 UPC1237 118746 U12 MC1458 118743 U7 7815 118739 U9 7915 118740 L1 2 H F2 F3 JUMPER RLY1 AROMAT J51E 12 Relay RCA PANEL S...

Page 13: ...20 2K R22 30 1K R28 R29 220K R30 R34 R50 10K VARIABLE R31 R32 R37 100K R33 R42 R68 R71 100 R38 43K 2 R39 180K 2 R43 R44 10K 2 R6 R8 R46 4 7K R47 R53 4 3K 3WATT R9 0 R49 33 2K R51 R67 1K R54 R62 1 1K R...

Page 14: ...Q9 2SA1306B 118730 Q8 Q10 2SC3298B 118732 R100 R101 R102 R103 R110 R111 R112 R113 47 5WATT R114 4 7 3WATT R115 1 3WATT R116 R121 R126 R130 10K R117 R119 56K R118 22K R120 390 1WATT R122 R123 100K R125...

Page 15: ...81 118731 Q21 Q24 MJF15031 118734 Q22 Q23 Q25 Q26 2SA1302 118729 Q27 MPSA06 U11 UPC1237 118746 U12 MC1458 118743 U7 7815 118739 U9 7915 118740 L1 2 H F2 F3 JUMPER RLY1 AROMAT J51E 12 Relay RCA PANEL S...

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