Celestion TF1525
Celestion TF1525 - 250W 15 inch speaker driver unit with pressed steel chassis, ferrite magnet, 98dB output sensitivity and a 40-3000Hz frequency range.
| Brand | Celestion |
| Model | TF1525 |
| Kind | Woofer |
| Nominal diameter (mm) | 381 |
| Impedance (Ω) | 8 |
| Rated power (W) | 250 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 98 |
| Frequency response | 40 Hz – 3000 Hz |
| Resonance frequency, fs (Hz) | 47.6 |
| DC resistance, Re (Ω) | 5.15 |
| Mechanical Q, Qms | 3.835 |
| Electrical Q, Qes | 0.565 |
| Total Q, Qts | 0.493 |
| Equivalent volume, Vas (l) | 148.41 |
| Effective piston area, Sd (cm²) | 855.3 |
| Moving mass, Mms (g) | 77.93 |
| Force factor, BL (T·m) | 14.57 |
| Voice coil inductance, Le (mH) | 0.9 |
| Linear excursion, Xmax (mm) | 4.5 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 64 |
| Cutout diameter (mm) | 351 |
| Mounting depth (mm) | 153 |
| Cone material | Kevlar loaded paper |
| Magnet material | Ferrite |
| Weight (kg) | 5.2 |