Graham · Speakers · Bookshelf Speakers
Graham LS5/1
The Graham LS5/1 is a floorstanding BBC design by Derek Hughes, with its bass/midrange driver mounted behind a slot.
fig. 01 · speakers
Graham LS5/1
From Graham
Derek Hughes built the LS5/1 on the BBC approach of thin panels mass-loaded to push resonances below the midrange. The bass/midrange driver sits behind a slot, which improves the off-axis response and makes a large drive unit workable in a domestic room. Hand-selected veneers, grille on concealed magnets.
Specifications
| Enclosure | Damped MDF, floor standing |
|---|---|
| Finish | Real wood veneer |
| Dimensions (w/h/d) | 43cm by 103cm by 48cm |
| Weight | 42kg |
| Frequency response | 37Hz to 18kHz, ±3dB |
| Nominal impedance | 8Ω |
| Sensitivity | 89dB SPL (2.83V, 1m) |
| Maximum output | Over 110dB for a pair at 2m |
| Bass/midrange | 380mm |
| Tweeter | Two 25mm soft dome |
| Recommended amplifier power | 50 to 250 watts unclipped programme |
| Crossover | 1.6kHz, 22 elements |