This manual covers the Bowers & Wilkins DM-640, a component of the esteemed 600 series. Engineered for exceptional audio reproduction, the DM-640 features a metal dome tweeter, Kevlar cone midrange and woofer drivers, and a vented enclosure with a Flowport™ bass port. Its design prioritizes clarity, accuracy, and robust performance, making it a distinguished choice for discerning audio enthusiasts. The meticulous construction and advanced acoustic features reflect Bowers & Wilkins' commitment to sonic excellence and product reliability.

This comprehensive service manual provides detailed information for the maintenance and repair of the Bowers & Wilkins DM-640. It includes disassembly and assembly procedures, crossover schematics and component values, wiring diagrams, and a complete list of part codes with B&W order numbers. Written by the manufacturer and intended for dealership technicians, this English-language document offers the most complete available coverage. It is designed to assist owners, technicians, and mechanics in ensuring the optimal performance and longevity of their DM-640 speakers.