Celestion PowerProX18
18-inch, cast aluminium chassis, ferrite magnet LF loudspeaker
| Brand | Celestion |
| Model | PowerProX18 |
| 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 | 35 Hz – 1000 Hz |
| Resonance frequency, fs (Hz) | 34.8 |
| DC resistance, Re (Ω) | 5.1 |
| Mechanical Q, Qms | 3.147 |
| Electrical Q, Qes | 0.431 |
| Total Q, Qts | 0.379 |
| Equivalent volume, Vas (l) | 188.9 |
| Effective piston area, Sd (cm²) | 1210 |
| Moving mass, Mms (g) | 229.98 |
| Force factor, BL (T·m) | 24.38 |
| Voice coil inductance, Le (mH) | 1.61 |
| Linear excursion, Xmax (mm) | 9.5 |
| Excursion limit, Xmech (mm) | 48 |
| Voice coil diameter (mm) | 100 |
| Cutout diameter (mm) | 414 |
| Mounting depth (mm) | 225 |
| Cone material | Glass loaded cellulose, water-resistant coating front & back |
| Magnet material | Ferrite |
| Weight (kg) | 13.2 |