GRAHAM AUDIO CHARTWELL LS3/5 BOOKSHELF SPEAKER (PAIR)

SKU: GA/C/LS3/5 Categories: , ,

Description

GRAHAM AUDIO CHARTWELL LS3/5 BOOKSHELF SPEAKER

The LS3/5A is perhaps the best-known of all the BBC’s monitor designs. The BBC needed a small monitor that was suitable for critical assessment of programme quality in cramped OB vehicles and control rooms, and nothing suitable was available commercially. At the same time, a separate research project – an investigation into acoustic scaling of studios – had developed a miniature loudspeaker, and it was realised that it could be adapted for monitoring use. After much developement, the original LS3/5 was born.

Initially, 20 units were built in-house for field trials, but upon deciding to build another batch, it became apparent that KEF had altered both of the drive units, and the new units were sufficiently different to the originals to affect the way the loudspeaker measured and sounded. As a result, significant re-engineering work had to be completed by the BBC’s Designs Department, and this was such a significant deviation from the original model that the A suffix was added.

System 2 Way, sealed enclosure
Enclosure Thin wall construction, 9mm birch plywood, removable rear panel
Finish Real wood veneer
Dimensions (w/h/d) 19cm by 30cm by 17cm
Weight 5.3kg
Frequency response 70Hz to 20kHz, ±3dB
Nominal impedance
Sensitivity 83dB SPL (2.83V, 1m)
Maximum output 95dB for a pair at 2m
Bass/midrange 110mm Bextrene
Tweeter 19mm dome tweeter
Recommended amplifier power 25 to 50 watts unclipped programme

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