KEF Reference Series Model Four loudspeaker Description
Specifications: Four-way, six-driver loudspeaker system with coupled-cavity bass loading. Drive-units: 1" (25mm) soft-dome tweeter, 6.5" (160mm) polypropylene-cone midrange unit, 2x6.5" (160mm) polypropylene-cone lower midrange units, 2x10" (250mm) pulp-cone woofers. Crossover frequencies: 2.8kHz, 500Hz, 160Hz. Frequency response: 35Hz-20kHz ±3dB, -6dB at 32Hz. Nominal impedance: 4 ohms. Maximum spl: 118dB. Sensitivity: 92dB/W/m. Amplifier requirements: 50-400W.
Dimensions: 47.8" (1266mm) H by 11.8" (300mm) W by 15.3" (390mm) D. Weight: 108 lbs (49kg).
Serial numbers of units reviewed: 1110A & B.
Price: $5200/pair in black ash finish; $5600/pair in rosetta burr; $6400/pair in rosewood. Approximate number of dealers: not disclosed.
Manufacturer: KEF Loudspeakers, Maidstone, England. Distributor: KH America Inc., 89 Doug Brown Way, Holliston, MA 01746. Tel: (800) 352-8175. Fax: (508) 429-3600.