Celestion TN1225
Celestion TN1225 - 250W 12 inch midrange neodymium driver with pressed steel chassis, 99dB sensitivity and a frequency range of 50-4000Hz
| Brand | Celestion |
| Model | TN1225 |
| Kind | |
| Nominal diameter (mm) | 305 |
| Impedance (Ω) | 8 |
| Rated power (W) | 250 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 99 |
| Frequency response | 50 Hz – 4000 Hz |
| Resonance frequency, fs (Hz) | 61.4 |
| DC resistance, Re (Ω) | 5.2 |
| Mechanical Q, Qms | 3.118 |
| Electrical Q, Qes | 0.339 |
| Total Q, Qts | 0.306 |
| Equivalent volume, Vas (l) | 63.69 |
| Effective piston area, Sd (cm²) | 530.93 |
| Moving mass, Mms (g) | 42.12 |
| Force factor, BL (T·m) | 15.79 |
| Voice coil inductance, Le (mH) | 0.65 |
| Linear excursion, Xmax (mm) | 2.5 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 64 |
| Cutout diameter (mm) | 283 |
| Mounting depth (mm) | 132 |
| Cone material | Kevlar loaded paper |
| Magnet material | Neodymium |
| Weight (kg) | 2 |