Celestion CF1840JD
18 inch 1200W LF driver with cast aluminium chassis and ferrite magnet, 98dB output sensitivity and a frequency range of 30-2500Hz
| Brand | Celestion |
| Model | CF1840JD |
| Kind | Woofer |
| Nominal diameter (mm) | 457 |
| Impedance (Ω) | 8 |
| Rated power (W) | 1200 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 97 |
| Frequency response | 30 Hz – 2500 Hz |
| Resonance frequency, fs (Hz) | 37 |
| DC resistance, Re (Ω) | 5.29 |
| Mechanical Q, Qms | 4.372 |
| Electrical Q, Qes | 0.437 |
| Total Q, Qts | 0.397 |
| Equivalent volume, Vas (l) | 155 |
| Effective piston area, Sd (cm²) | 1134.12 |
| Moving mass, Mms (g) | 217.4 |
| Force factor, BL (T·m) | 24.76 |
| Voice coil inductance, Le (mH) | 1.16 |
| Linear excursion, Xmax (mm) | 12.5 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 100 |
| Cutout diameter (mm) | 414 |
| Mounting depth (mm) | 220 |
| Cone material | Kevlar loaded paper |
| Magnet material | Ferrite |
| Weight (kg) | 11.6 |