KEF Reference 8b Subwoofer The KEF Reference 8b Subwoofer offers unmatched sound quality with its advanced features. Perfect for any home theater or music setup, the Reference 8b Subwoofer enhances the overall sound experience. Twin 9 inches driver 'force-cancelling' subwoofer Delivering exceptional bass precision and control with zero distortion, Reference 8b is a truly extraordinary subwoofer. Sound For power with accuracy the Reference 8b sub has two 500W Class D amplifiers, each driving a 228mm (9 inch) long-throw, ultra-low distortion driver. These are connected back-to-back in a heavily braced, acoustically inert cabinet. The result is low distortion bass with effortless body and weight. Specifications CABINET FINISH Deep Piano Black WEIGHT 34kg (75lbs.) DIMENSION H x W x D : 398 x 365 x 429 mm (15.7 x 14.4 x 16.8 in.) UNIT MEASUREMENT Pair INPUTS RCA phono socketsAnalog XLR socketSpeaker level inputs FREQUENCY RANGE Free Field: 18Hz (-6dB) FREQUENCY RESPONSE 24Hz at 90dB output in free-space mode (±3dB) NET INTERNAL VOLUME 23L MAXIMUM OUTPUT 110dB (peak sound pressure level at 1m 50Hz) AMPLIFIER TYPE 2 x 500W Class D with switched mode power supply and DSP based control section DRIVE UNITS LF 2 x 225 mm (9in.) POWER REQUIREMENTS 100V - 120V / 220V - 240V ~50/60Hz POWER CONSUMPTION 1000W LINK OUT RCA phono socket VARIABLE LOW PASS FILTER Variable frequency: 40Hz to 160HzVariable slope: 12dB/oct, 18dB/oct, 24dB/octLFE mode: 350Hz, 18dB/oct
