stereonomono - Hi Fi Compendium - 13 years on-line: B&W DM 4
Listening test] B&W DM4 vintage loudspeakers
DM4 - B&W DM4 - Audiofanzine
Bowers and Wilkins DM4 3-Way Loudspeaker System Manual | HiFi Engine
B&W DM 4 | Hifi-Wiki
Jacco Gardner - My first pair of B&W speakers arrived! This is the DM4 model from 1973. I went to pick up my quadraphonic amplifier today but it's still being serviced and