Graham · Speakers · Bookshelf Speakers
Graham LS3/1
The Graham LS3/1 is a sealed two-way BBC design with co-axial dual tweeters, originally aimed at outside broadcast.
fig. 01 · speakers
Graham LS3/1
From Graham
The BBC aimed the LS3/1 at outside broadcast work. Its drivers are close to those in the LS5/1 studio monitor, but the smaller cabinet is a sealed infinite baffle, which suits a large bass driver in a small box better than a port. The dual tweeters sit co-axially, unique among the BBC designs.
Specifications
| System | 2 Way, sealed enclosure |
|---|---|
| Enclosure | Damped MDF |
| Finish | Real wood veneer |
| Dimensions (w/h/d) | 46cm by 76cm by 31cm |
| Weight | 30kg |
| Frequency response | 43Hz to 18kHz, ±3dB |
| Nominal impedance | 8Ω |
| Sensitivity | 87dB SPL (2.83V, 1m) |
| Maximum output | Over 108dB for a pair at 2m |
| Bass/Midrange | 380mm |
| Tweeter | 2 x 25mm soft dome |
| Crossover | 1.6kHz, 22 elements |
| Recommended amplifier power | 50 to 250 watts unclipped programme |