KEF LS3-5A

KEF LS3-5A

KEF LS3-5A


KEF LS3-5A

KEF LS3-5A

pdfOwners Manual

TECHNICAL SPECIFICATIONS



2-way stereo speaker,
Frequency Response: 70/20 Khz
Sensitivity: 82.5dB/1m
Amplifier Requirements: 25/75w 8 ohms
Maximum Input Power: 30 Watts
Maximum Output: 95 dB
Impedance nominal: 11 ohms
Dimensions: 190 x 302 x 162 mm
Weight 5.5 kg


The LS3/5a design was created by the Engineering Departrnent of the British Broadcasting Corporation who were given the task of designing a small, broadcast-quality monitor loudspeaker. The loudspeaker had to be capable of accurately reproducing the human voice, in outside broadcast applications, yet take up the minimum amount of space. However, to suit the BBC's needs for minimum downtime, the speaker had to be manufactured to a very tight specification, so that in the event of field failure the entire speaker could be replaced by another without affecting the perceived tonal balance, an obvious prerequisite for monitoring purposes. Since its formation in 1961 by Raymond Cooke (O.B.E.), a former Technical Director of the BBC, KEF has pioneered many innovations in loudspeaker technology and design, and specifically towards improving levels of manufacturing consistency between loudspeakers. The use of synthetic materials, computer-optimised cross-over networks and close tolerance matching of drive units has been common in ail KEF Reference Series loudspeakers. So it is only fitting that KEF have produced, perhaps, the definitive version of the BBC LS3/5a, a product that embodies ail of the ideals that have made the KEF Reference Series a world standard.