Pleased to to have a beautiful pair of Design Acoustics D-6’s join the Revolution. A contemporary of the D-12 “dodecahedron” loudspeaker, the D-6 was introduced in 1973 with a unique design featuring a forward facing midrange driver, 5 multidirectional tweets (4 Peerless, 1 phenolic ring) and a rear-facing 10″ woofer. The sonic results are astounding. Technical specifications include: Frequency response: 45 Hz – 15000 Hz +/- 2 dB; Efficiency: 90 dB/1 meter/watt; Drivers: 1 x 10″ Woofer, 1 x 5″ Mid, 5 x 2.5″ Tweeters; Weight: 38 lbs; Crossover frequencies: 800 Hz, 2000 Hz.
photo: canuckaudiomart.com
A 1973 review from High Fidelity magazine: 
Excellent condition and now available. Please contact RevolutionSounds@outlook.com for pricing and arrangements.
Thank you. ~L
Revolution Sounds 