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K140

K140

KEF have an enviable track record when it comes to designing classic 200mm (8”) two-way systems. The K140 is no exception.

Easily accommodated, and with no special installation problems, the K140 has a prodigious 109dB spl maximum output capability, prodigious that is, for such a compact speaker.

An 18mm (.75”) thick enclosure ensures low levels of cabinet colouration, and fast, detailed bass performance, with good weight and extension, when correctly positioned. This may be a stand around 450mm (18”) high, free-standing, or with some wall reinforcement. The 89dB/2.83V/1m sensitivity ensures high output from moderately-powered amplifiers. The use of Kapton for the bass unit’s voice-coil former gives high efficiency with low distortion, thanks to its freedom from magnetic effects and eddy current losses. Being thermally inert, it is well able to withstand the high temperatures generated during high-level replay. Careful equalisation using computer optimisation together with attractive appearance, make the K140 system of choice for a thoroughly musical and outstanding all-round performance.

K140 Specifications

Description 2-way wall/shelf mount  
Frequency range at ±3dB
(measured at 2m on reference axis) 		65Hz-20kHz (-6dB 55Hz)  
Maximum output
(measured spl on programme peaks under typical listening conditions) 		109dB
Characteristic sensitivity level (measured at 1m on reference axis for pink noise input of
2.83V rms [anechoic conditions]).		 89dB
Amplifier requirements into 8 ohms 10-100 W
Nominal impedance 8 ohms
Enclosure type Closed box
Internal volume 18.7 litres (.66 cu.ft)
Net weight 8.7kg (19.25lb)
Dimensions 490h x 260w x 246d (mm)
19.3h x 10.2 x 9.7d (in)