This comprehensive service manual for the Kenwood KAC-859 power amplifier provides detailed technical information and repair procedures for technicians and audio enthusiasts. It covers a wide range of topics, including circuit diagrams, troubleshooting guides, component specifications, and repair instructions. The manual is written in clear and concise language, making it easy to understand and follow. With this manual, you will be able to diagnose and repair common problems, understand the inner workings of the amplifier, and perform preventative maintenance to ensure optimal performance.

The Kenwood KAC-859 is a powerful car audio amplifier designed for serious audio enthusiasts. This amplifier boasts an impressive 4-channel configuration, capable of delivering a robust 100 watts RMS per channel at 4 ohms, scaling up to a staggering 200 watts RMS per channel when bridged. This makes it ideal for powering a wide variety of speaker setups, from basic two-way speakers to high-end multi-way component systems. The KAC-859 is built with robust construction and features a high-current power supply to ensure consistent performance even under high demand. It also provides a wealth of features to enhance your listening experience, including bass boost, variable low-pass, and high-pass crossover filters. These features allow you to tailor the sound to your preferences, ensuring that your music sounds its best. The Kenwood KAC-859 amplifier is renowned for its clear, powerful sound reproduction. It is designed to handle a wide range of musical genres, from delicate classical pieces to hard-hitting rock and roll. The amplifier's robust construction ensures reliability and longevity, making it a worthwhile investment for any car audio enthusiast. Its high output power and precise sonic performance make it an ideal choice for those who demand the best from their car audio system. However, finding a service manual for the KAC-859 can be challenging, as it is an older model. If you do manage to locate one, it will likely provide detailed information on troubleshooting, repairs, and maintenance procedures. This is invaluable for keeping your amplifier in optimal working condition and maximizing its lifespan.