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Chartwell LS3/5 BBC Licensed Monitor

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Chartwell LS3/5 BBC Licensed Monitor Empty Chartwell LS3/5 BBC Licensed Monitor

Post by Audioline Tue Mar 15, 2016 11:02 pm

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Graham Audio Chartwell LS3/5 BBC Licensed Monitor Loudspeaker
Recommended Retail Price: SGD$3800.00

Chartwell LS3/5 BBC Licensed Monitor GrahamAudio_LS3-5_zpsvqv7c33q

Chartwell LS3/5 BBC Licensed Monitor 43b711fb-60e3-4ee4-a645-97335971718f_zpslcd1guil

The BBC LS3/5

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.

The new B110 needed to be decoupled from the baffle in order to prevent an interacton with the cabinet. Next, when fed from the existing crossover, the new HF unit exhibited significant colouration which required modifications to the crossover and the addition of the familiar protective grille and felt pads. The small number of loudspeakers from the original batch were now considered obsolete, and the true LS3/5 was never manufactured commercially.

While the revised LS3/5A sounded very similar to the original, many felt at the time that the original loudspeaker was better. Could this version be re-created today?

Graham Audio presents the ultimate version of the most famous of all the BBC loudspeakers, and is doing so under one of the most cherished names connected with the LS3/5A: Chartwell. The bespoke drive units and crossover networks are developed by Derek Hughes working in conjunction with Volt and Seas loudspeakers to produce a fully licensed loudspeaker using the very finest materials available.

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: 9 Ohms
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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1 Orchid Club Road, 
Social Clubhouse Unit #02-33B, 
Orchid Country Club 
Singapore 769162

Contact Number: +65 67565 585 during operating hours.

Trade in and consignment welcome.

Sunday & Monday       1200 HRS to 1700 HRS
      
Tuesday to Saturday   1200 HRS to 1800 HRS

Audioline
Dealer\Reseller\Trader\Service Provider
Dealer\Reseller\Trader\Service Provider

Number of posts : 311
Age : 59
Location : singapore
Registration date : 2010-01-23

http://www.audioline.com.sg

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