Celestion Ruby
An alnico-magnet guitar speaker that’s purpose-built to create vintage tones, ideal for use with mid-powered amps and combos.
| Brand | Celestion |
| Model | Ruby |
| Kind | |
| Nominal diameter (mm) | 309 |
| Impedance (Ω) | 8 |
| Rated power (W) | 35 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 100 |
| Frequency response | 75 Hz – 5000 Hz |
| Resonance frequency, fs (Hz) | 75 |
| DC resistance, Re (Ω) | 6.7 |
| Mechanical Q, Qms | |
| Electrical Q, Qes | |
| Total Q, Qts | |
| Equivalent volume, Vas (l) | |
| Effective piston area, Sd (cm²) | |
| Moving mass, Mms (g) | |
| Force factor, BL (T·m) | |
| Voice coil inductance, Le (mH) | |
| Linear excursion, Xmax (mm) | |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 44 |
| Cutout diameter (mm) | 283 |
| Mounting depth (mm) | 165 |
| Cone material | |
| Magnet material | Alnico |
| Weight (kg) | 4.2 |