ProAc Response 4 loudspeaker Specifications

Sidebar 1: Specifications

Description: Floorstanding, plinth-mounted, three-way, five-driver, ported loudspeakers. Bass drivers: two 9" coated cones with 3" ribbon-wound voice-coils and diecast chassis. Midrange drivers: two 3" soft domes with 3" ribbon-wound voice-coils and double-mounted suspensions. Tweeter: 1" soft dome with coating, rear loading, ferrofluid-cooled and damped voice-coil. Crossover: three-way with 12dB/octave slopes. Grillecloth: acoustically transparent Crimplene. Frequency response: 20Hz-25kHz, ±3dB. Impedance: 8 ohms. Sensitivity: 89dB/W/m.
Dimensions: 14" W by 63" H by 17" D on plinths with spikes. Weight: 355 lbs each.
Finishes available: various wood veneers.
Price: $18,000/pair (1994); no longer available (2004). Approximate number of dealers: 35.
Manufacturer: ProAc/Celef Audio International Ltd., Highpoint House, Riding Road, Buckingham Industrial Estate, Brackley, Northamptonshire NN13 7BE, England, UK. Tel: (44) 1280-700147. Fax: (44) 1280-700148. US distributor: Modern Audio Consultants, 112 Swanhill Court, Baltimore, MD 21208. Tel: (410) 486-5975, Fax: (410) 560-6901. Web:

US distributor: Modern Audio Consultants
112 Swanhill Court
Baltimore, MD 21208
(410) 486-5975