Celestion TF1230SL
Celestion TF1230SL - 350W 12 inch mid bass drive unit with pressed steel chassis, ferrite magnet, 97dB sensitivity and a frequency range of 50-4000Hz
| Brand | Celestion |
| Model | TF1230SL |
| Kind | Woofer |
| Nominal diameter (mm) | 305 |
| Impedance (Ω) | 8 |
| Rated power (W) | 350 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 97 |
| Frequency response | 50 Hz – 4000 Hz |
| Resonance frequency, fs (Hz) | 56.8 |
| DC resistance, Re (Ω) | 5.17 |
| Mechanical Q, Qms | 3.635 |
| Electrical Q, Qes | 0.437 |
| Total Q, Qts | 0.39 |
| Equivalent volume, Vas (l) | 53.76 |
| Effective piston area, Sd (cm²) | 530.93 |
| Moving mass, Mms (g) | 58.32 |
| Force factor, BL (T·m) | 15.68 |
| Voice coil inductance, Le (mH) | 0.89 |
| Linear excursion, Xmax (mm) | 6 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 75 |
| Cutout diameter (mm) | 283 |
| Mounting depth (mm) | 137 |
| Cone material | Kevlar loaded paper |
| Magnet material | Ferrite |
| Weight (kg) | 4.3 |