Celestion Truvox 1525
15-inch pressed steel chassis, ferrite magnet mid/bass driver
| Brand | Celestion |
| Model | Truvox 1525 |
| Kind | Woofer |
| Nominal diameter (mm) | 381 |
| Impedance (Ω) | 8 |
| Rated power (W) | 400 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 96 |
| Frequency response | 40 Hz – 4000 Hz |
| Resonance frequency, fs (Hz) | 49 |
| DC resistance, Re (Ω) | 6.58 |
| Mechanical Q, Qms | 12.918 |
| Electrical Q, Qes | 0.803 |
| Total Q, Qts | 0.756 |
| Equivalent volume, Vas (l) | 135.4 |
| Effective piston area, Sd (cm²) | 855.3 |
| Moving mass, Mms (g) | 80.772 |
| Force factor, BL (T·m) | 14.273 |
| Voice coil inductance, Le (mH) | 0.703 |
| Linear excursion, Xmax (mm) | 4.8 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 64 |
| Cutout diameter (mm) | 352 |
| Mounting depth (mm) | 152 |
| Cone material | Glass loaded cellulose |
| Magnet material | Ferrite |
| Weight (kg) | 4.8 |