ProAc Response 4


One non-smoking owner, excellent condition.


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.