Celestion TF1830
18-inch pressed steelchassis, ferrite magnetsubwoofer
| Brand | Celestion |
| Model | TF1830 |
| Kind | Woofer |
| Nominal diameter (mm) | 457 |
| Impedance (Ω) | 4 |
| Rated power (W) | 500 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 96 |
| Frequency response | 35 Hz – 1000 Hz |
| Resonance frequency, fs (Hz) | 35.7 |
| DC resistance, Re (Ω) | 2.58 |
| Mechanical Q, Qms | 4.213 |
| Electrical Q, Qes | 0.434 |
| Total Q, Qts | 0.393 |
| Equivalent volume, Vas (l) | 202.4 |
| Effective piston area, Sd (cm²) | 1134.12 |
| Moving mass, Mms (g) | 179.11 |
| Force factor, BL (T·m) | 15.46 |
| Voice coil inductance, Le (mH) | 1.28 |
| Linear excursion, Xmax (mm) | 4.5 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 75 |
| Cutout diameter (mm) | 421 |
| Mounting depth (mm) | 209 |
| Cone material | Glass loaded paper (weather-resistant) |
| Magnet material | Ferrite |
| Weight (kg) | 7.5 |