Celestion TF1230
Celestion TF1230 - 350W 12 inch mid bass drive unit with pressed steel chassis, ferrite magnet, 94dB output sensitivity and a frequency range of 45-3000Hz
| Brand | Celestion |
| Model | TF1230 |
| Kind | |
| Nominal diameter (mm) | 305 |
| Impedance (Ω) | 8 |
| Rated power (W) | 350 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 94 |
| Frequency response | 45 Hz – 3000 Hz |
| Resonance frequency, fs (Hz) | 59 |
| DC resistance, Re (Ω) | 5.19 |
| Mechanical Q, Qms | 2.449 |
| Electrical Q, Qes | 0.652 |
| Total Q, Qts | 0.515 |
| Equivalent volume, Vas (l) | 51.12 |
| Effective piston area, Sd (cm²) | 530.93 |
| Moving mass, Mms (g) | 56.86 |
| Force factor, BL (T·m) | 12.96 |
| Voice coil inductance, Le (mH) | 1.31 |
| Linear excursion, Xmax (mm) | 5 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 75 |
| Cutout diameter (mm) | 283 |
| Mounting depth (mm) | 140 |
| Cone material | Kevlar loaded paper |
| Magnet material | Ferrite |
| Weight (kg) | 4.3 |