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SERVICE MANUAL

Subwoofer Amplifier Model:
SW12-I
SW15-I
KLIPSCH, INC.

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Summarization of Contents

Specifications
Model: SW12-I
Detailed specifications for the SW12-I subwoofer amplifier model.
Model: SW15-I
Detailed specifications for the SW15-I subwoofer amplifier model.
Theory of Operation
Inputs
Explanation of the various input types and signal paths for the amplifier.
Signal Conditioning
Description of signal processing stages including summing, buffering, and filtering.
Compression
Details on the amplifier's signal compression circuit and its adjustment.
Driver Circuit
Overview of the amplifier's driver circuit, including DC offset adjustment.
Output
Explanation of the output stage design and its configuration for high power.
Power Supplies
Description of the regulated and unregulated power supply circuits.
Other Features
Information about the amplifier's protection and control circuitry, including relay operation.
Alignment Procedures
SW12-I Amplifier Alignment Procedure
Step-by-step guide for calibrating the SW12-I amplifier.
SW15-I Amplifier Alignment Procedure
Step-by-step guide for calibrating the SW15-I amplifier.

Table of Contents