This is an original service manual for the Pioneer CS-G900W xc speaker. It is a valuable resource for anyone who wants to repair or maintain these vintage speakers. The manual provides detailed information on the speaker's design, components, and specifications, as well as step-by-step instructions for troubleshooting and repairing common issues. With this manual, you can ensure that your Pioneer CS-G900W xc speakers continue to provide high-quality sound for years to come. It is a must-have for any collector or audio enthusiast who appreciates vintage electronics.