Reference Series Model 101 (1979-86)

Ever since the Celeste was released in 1962 KEF has been noted for producing high performance compact loudspeakers. The Cresta, released in 1967, set new standards with the newly developed B110 and T27 drivers that were later to be adopted in the world famous BBC designed LS3/5A broadcast monitor.
 
Model 101 combined the T27 tweeter with the SP1057 version of the B110 in a 6.7 litre closed box. The system was fully overload protected by the S-Stop system, included mechanical decoupling of the bass driver to minimize colouration and each pair were acoustically matched to within 0.5dB. The result was a system with accurate tonal balance and detailed stereo imaging - being suitable for use with the best electronics - and able to fit unobtrusively into the listening room.
 
Specification: Model 101
System type: Two-way, bookshelf/stand-mount
Enclosure type: Closed box
Size: 340 x 180 x 190 mm (13.4 x 7.1 x 7.5 inches)
Weight: 5.6 kg (12.3 lb)
Input Impedance: 8 ohms
Rated maximum power: 100W programme
Amplifier Requirements: 20-100 watts per channel into 8 ohms
Frequency response: 90-30,000Hz +/-2dB at 2m on measuring axis (-10dB at 47Hz and 40kHz)
Sensitivity: 81dB at 1m for a pink noise input of 1W
Crossover Frequencies: 400, 2500Hz
Maximum output: 100dB on programme peaks under typical listening conditions
Finishes: Walnut, teak, rosewood and black ash veneers
Grille: Black cloth
System: SP1122
Drive units: B110 bass/midrange unit (SP1057), T27 tweeter (SP1032)
Crossover: SP1123 and SP1124 (SP2010 from 1983)