Chartwell LS3/5A BBC Licensed Monitor Loudspeaker
The LS3/5A was produced by British Broadcasting Corporation (BBC) Designs Department in response to detail changes in the performance of the drive units that were originally chosen for the LS3/5 as designed by BBC Research and Development. It is the most well-known of all the BBC loudspeakers, and remains the compact loudspeaker of choice for many today.
As you would expect, the Chartwell version, engineered by Derek Hughes, includes authentic details such as the perforated metal tweeter grille, thick felt pads surrounding the tweeter, and Velcro rather than our usual hidden magnets to secure the grille frame. The cabinet uses 12mm panels and a fixed rear panel, according to BBC Designs Department’s specification.
Chartwell are the only company to have ever manufactured the LS3/5, and now also the LS3/5A, audiophiles are now in the unique position of being able to hear for themselves the differences that these changes made to the design originally intended by BBC R&D.
Chartwell LS3/5A Specifications
System: 2 Way Sealed Enclosure.
Cabinet: Thin wall construction, 12mm Birch plywood.
Finish: Real Wood Veneer.
Dimensions: 30cm (h) x 19cm x 17cm (d).
Frequency Response: 70Hz to 20kHz +/-3dB.
Nominal Impedance: 11 ohms.
Sensitivity: 83dB SPL (2.83V, 1m).
Maximum Output: 95dB, pair @ 2m.
Tweeter: 19mm Dome.
Recommended Amplifier Power: 25 to 50watts unclipped programme.
E. & O. E.