Infinity Kappa 102a Service Manual
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Infinity Kappa 102a Service Manual

Automotive amplifier
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Kappa 102a
Automotive Amplifier

SERVICE MANUAL

Infinity Systems Incorporated
250 Crossways Park Dr.
Woodbury, New York 11797
Rev0
10/2004

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Summary of Contents for Infinity Kappa 102a

  • Page 1: Service Manual

    Kappa 102a Automotive Amplifier SERVICE MANUAL Infinity Systems Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 Rev0 10/2004...

  • Page 2: Block Diagram

    Kappa 102a - CONTENTS - SPECIFICATIONS ……..…………………………………………………………..2 FEATURES ..……………………………….……………….……………….…...…3 APPLICATIONS (SET-UP GUIDE) ………………..……..……………………….4 PRECAUTION AND NOTES..…..………………….….…………………………..6 INSTALLATION ….………..…………..…………….……………………………..7 TROUBLESHOOTING ….………..………………….……………………………..9 BLOCK DIAGRAM..………...……………….……………….…………..….…….10 ELECTRICAL PARTS LIST ..……………….……………….…………..….…….11 PCB DRAWINGS ….………..……………………………………………………..16 SEMICONDUCTOR PINOUTS..………..……..……………………………29 SCHEMATICS …………..……………………..…….…….….………..………….30 REVISIONS ……………..……………………..…….…….….………..………….38 Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications...

  • Page 3: Specifications

    Kappa 102a Kappa 102a Specifications POWER 4 OHM 2X100 2 OHM 2X150 BRIDGE 4 OHM 1 OHM STABLE PROTECTS FREQUENCY RESPONSE (+0 -3dB) 20-20KHz EQUALIZATION FIXED AT 40Hz Q=1 +11dB SAFE BASE (DBO) var.freq and Q CROSSOVER FLAT/LOW/HIGH PASS SWITCH DECADE SWITCH ( 40-320 &...

  • Page 4: Features

    Kappa 102a F E A T U R E S The Kappa 102a is a 2-channel power amplifier that offers stereo, bridged-mono, or tri-mode operation, and is rated at 100 watts (rms) per channel into a 4-ohm load. In a bridged-mono configuration, it can deliver up to 300 watts (rms) for the same load.

  • Page 5: Installation

    NOTE: For simplicity, Figures 1 through 3 do not show power, Figures 1 through 3 show how to configure the Kappa 102a remote, and input connections. for stereo, bridged-mono, and tri-mode operation.
  • Page 6 Kappa 52a drives (Low-Pass) a pair of 5 ⁄ " speakers. The 102a’s stereo low-pass outputs feed a bridged- mono Kappa 102a to drive a single 12" subwoofer. KAPPA 102a 12" Subwoofer L/R Inputs 1" Tweeter 4" Midrange...
  • Page 7 Kappa 102a P R E C A U T I O N S A N D N O T E S • The Kappa 102a has five levels of circuit protection • Always wear protective eyewear when using tools. that monitor the amplifier and will shut it down if the •...
  • Page 8 M P L I F I E R A R T S I S T Refer to Figure 7 (below) for details of the Kappa 102a’s Examine and verify that the package includes the front and rear panel connections. following items: 1.
  • Page 9 R O S S O V E R Dynamic Bass Optimizer (DBO) is a new approach to IMPORTANT: If you plan to use the Kappa 102a to drive enhancing low-frequency reproduction in a vehicle. full-range speakers, set both AMP and AUX filters to...
  • Page 10 Make sure the vehicle’s electrical system is Audio cycles A protection circuit Verify the following– working properly and power is reaching the Kappa 102a off and on; is turning the electrical system is (i.e., green LEDs on the top panel are on).
  • Page 11 Kappa 102a XOVER RIGHT FLAT INPUT 250mV-9V DIFF. SAFE POWER MODULE BASS SPKR OUT VARIABLE GAIN CIRCUIT FREQ. 250mV-9V 32-320HZ 320HZ FREQ. STEREO PROTECTION KA102a MUTE L&R CIRCUIT (BRIDGE) CIRCUIT MODULE 320HZ VARIABLE FREQ. 32-320HZ FLAT 2 CHANNELS (2X150W) R OUT...
  • Page 12 Kappa 102a KAPPA 102A Electrical Parts List Part# Description Reference Designator PWM MODULE Resistors RS1700 SMD RES 1Kohm 5% 1/8W R2,15,18 RS1701 SMD RES 10Kohm 5% 1/8W R9,11 RS1702 SMD RES 100Kohm 5% 1/8W RS1703 SMD RES 2.2Kohm 5% 1/8W...
  • Page 13 Kappa 102a Reference Designator Part# Description PREAMP/DRIVER MODULE Capacitors CP1411 Cap Alum El. 100uF 20% 16 C34,35 CP1412 Cap Alum El. 47uF 20% 16v C27,28,33,42 CP1417 Cap Alum El. 22uF 20% 16 C25,31 CP1426 SMD CAP 0.1uF 20% 50V Z5U...

  • Page 14: Cp1562 Cap Alum El. 330Uf

    Kappa 102a Reference Designator Part# Description MAIN PCB Resistors RS1700 SMD RES 1Kohm 5% 1/8W R40,42,43 RS1701 SMD RES 10Kohm 5% 1/8W R27-29,31,39,41,71-73 RS1702 SMD RES 100Kohm 5% 1/8W RS1703 SMD RES 2.2Kohm 5% 1/8W R34,52 RS1704 SMD RES 22Kohm 5% 1/8W...

  • Page 15: Tr1134 Npn Xstr 40V/600Ma Sot

    Kappa 102a Reference Designator Part# Description MAIN PCB Miscellaneous MI1095 Common Mode Inductor GT's MI1136 Kappa 102a Power Transfor FH1001 Fuse Holder Right Angle TH1006 NTC THERMISTOR 10Kohm @ TE1178 Faston Female 0.032" x 0. CLIP1-4 FB9,10 SA0000030 Ferrite Bead (CC1028)
  • Page 16 Header Right Angle 3-Pos PM1345 StyroFoam For Infin. Kapp PM1351 Beauty Box KA102a PM1393 Extension Lateral KA102a BR1363 Front Bracket Kappa 102a BR1365 Transistor Bar TO-220 (8x BR1366 Transistor Bar TO-218 (8x BR1422 Rear Bracket for KA102a FS1061 Fuse Auto 40A/32V...
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  • Page 31 Kappa 102a XOVER MODULE MODULE GREEN RTX2222 RTX2222 LAMP 4.7K RLS4148 RLS4148 LAMP 4.7K MATES WITH PCB P/N PC1159 Title LAMPS MODULE harman consumer manufacturing This document is property of Size Number DESIGNED BY: M. RODRIGUEZ harman consumer manufacturer El Paso,...
  • Page 32 Kappa 102a +16V 0.1uF L IN FROM IC1:A IC1:B SUM. 0.22uF TL072 0.22uF TL072 0.47uF 0.47uF R IN L IN L IN 0.1uF XOVER HP/LP VR1B VR1D -16V MODULE VR1A VR1C FREQ. FREQ. VR2B VR2A R IN FROM SUM. FOUR GANG 2.7K...
  • Page 33 Kappa 102a 33pF 24.99K 1% 10K 1% +16V INPUT IC1:B .1uF 2.2uF 49.9K 1% TL072 IC1:A 4.99K 1% R IN TL072 49.9K 1% 2.2uF .1uF -16V PC1146 AGND 33pF (ZD0149) 10K 1% 24.99K 1% +16V INPUT PC1147 (ZD0147) IC2:B .1uF 2.2uF...
  • Page 34 +35V Kappa 102a Kappa 102a TIP31C +OUT R TIP35C DIFF. 2SC3906K CIRCUIT INPUT SAFE BASS 8.2K MODULE PC1146 TIP35C SHEET 2 AGND AGND (ZDO149) SPEAKER +16V +16V -16V -16V 0.38uH +16V TIP36C -OUT R 2SA1037K TIP36C TIP32C TO PWM PIN 5...
  • Page 35 Kappa 102a 2.2K 4.7K 2.2K 2SC2412K BATT 300UH/40A 0.1uF 47uF/16V MUTE OUT 2SA1037K 0.1uF TO MODULES TIP31C +16V UF4002 RLS4148 CHASSIS UF4002 6T AWG22 FROM SHEET 3 +BATT. 6T AWG22 UF4002 REM. REMOTE IN FB10 -16V UF4002 TIP32C FEP16BT D.QB...
  • Page 36 Kappa 102a R14 220 +BATT. 2SC2412K RXT2907A 2.2K REM.IN 3.3K +BATT. .1uF TO LAMP MOD. REM.OUT 330uF/16V C2 0.1uF 0.1uF RXT2222A TO LAMP MOD. RXT2907A 4.7uF/10V +5 REF SCR1 RLS4148 TL494 4.7K SHORT PROTECTION RXT2222A 0.1uF RXT2907A 4.7K 6.8K 100K 2700pF 0.1uF...

  • Page 37: R2,22

    Kappa 102a +16V NON INVERTER MODEL KA +16V .1uF VALUES 54a 102a 202a 255a +16V +16V *R1,R21 5.1K 5.1K 11K 9.1K 5.1K **R2,R22 4.7K 4.7K 2SC2412K 100K 100K 100K 2N5401 ***R13,14,33,34 R IN R IN +OUT(R) MA0041 MA0067 MA0070 MA0041 2.2K...

  • Page 38: R1,21

    Kappa 102a **** KA’S MODEL KAPPA MODEL KA52a ONLY KAPPA MODEL KA255a ONLY *SW1 CONN1 NOTES C1,C2,C9,C10 C3,C4,C11,C12 **C3,4,11,12 ***JI,2,3,4 C3,C4,C11,C12 KA52a MA0043 0.15uF 0.015uF 0.015uF KA102a MA0054 KA202a MA0054 X1 = 32-320Hz X15 = 480-4.8KHz KA54a MA0054 FRONT KA54a...

  • Page 39: C1,14

    Kappa 102a DATE REVISION CHANGE DESCRIPTION REASON OF CHANGE CHANGED: ECN# DATE REVISION CHANGE DESCRIPTION REASON OF CHANGE CHANGED: ECN# FALSED TRIGGERING ON SHORT CIRCUIT PROTECTION 03/06/96 DELETE D3 R. MACIAS FALSED TRIGGERING ON SHORT CIRCUIT PROTECTION 12/03/96 DELETE D2 TO D7,C7,C8,C9,C11,R20,R21,R22,R24,R25,SCR2 R.

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