The LS5/8 is the BBC's flagship design, and was developed because of the need for higher sound pressure levels and greater transparency and consistency than the ageing LS5/5 offered. This was the first BBC loudspeaker to use a polypropylene diaphragm which, being lighter than Bextrene, offered greater efficiency and lower colouration. A carefully researched cone profile enables the unit to work successfully well into the midrange.
After many months of intensive development, the Graham Audio LS5/8 refines the concept further. Designed in conjunction with Derek Hughes and Volt Loudspeakers and manufactured under license in the UK, it features a unique 12 inch bass/mid unit that is married to the same 34mm Audax tweeter that is used in the LS5/9.
Specifications
| System |
2 Way, reflex loading |
| Enclosure |
Thin wall construction, birch plywood |
| Finish |
Real wood veneer |
| Dimensions |
76cm by 46cm by 40cm |
| Weight |
34kg |
| Frequency response |
40Hz to 16kHz, ±3dB |
| Nominal impedance |
8Ω |
| Sensitivity |
89dB SPL (2.83V, 1m) |
| Maximum output |
Over 110dB for a pair at 2m |
| Bass/midrange |
300mm Diaphnatone polypropylene |
| Tweeter |
Son Audax HD13D34H |
| Recommended amplifier power |
50 to 250 watts unclipped programme |
