Celestion Truvox 1225
12-inch pressed steel chassis, ferrite magnet mid/bass driver
| Brand | Celestion |
| Model | Truvox 1225 |
| Kind | Woofer |
| Nominal diameter (mm) | 305 |
| Impedance (Ω) | 8 |
| Rated power (W) | 300 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 96 |
| Frequency response | 50 Hz – 4000 Hz |
| Resonance frequency, fs (Hz) | 60.3 |
| DC resistance, Re (Ω) | 6.38 |
| Mechanical Q, Qms | 7.389 |
| Electrical Q, Qes | 0.681 |
| Total Q, Qts | 0.623 |
| Equivalent volume, Vas (l) | 54.15 |
| Effective piston area, Sd (cm²) | 530.93 |
| Moving mass, Mms (g) | 51.39 |
| Force factor, BL (T·m) | 13.51 |
| Voice coil inductance, Le (mH) | 0.68 |
| Linear excursion, Xmax (mm) | 4.8 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 64 |
| Cutout diameter (mm) | 285 |
| Mounting depth (mm) | 131 |
| Cone material | |
| Magnet material | Ferrite |
| Weight (kg) | 4.7 |