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Graham Audio Chartwell LS3/5 BBC Lic. Bookshelf Speaker (pair)


The BBC LS3/5

The LS3/5 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.

Specifications

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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