Celestion CF0820BMB
8 inch woofer / low frequency driver with cast aluminium chassis and ferrite magnet, 93dB sensitivity and 50-6000Hz frequency range.
| Brand | Celestion |
| Model | CF0820BMB |
| Kind | Woofer |
| Nominal diameter (mm) | 200 |
| Impedance (Ω) | 8 |
| Rated power (W) | 250 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 93 |
| Frequency response | 50 Hz – 6000 Hz |
| Resonance frequency, fs (Hz) | 50.5 |
| DC resistance, Re (Ω) | 5.45 |
| Mechanical Q, Qms | 5.095 |
| Electrical Q, Qes | 0.394 |
| Total Q, Qts | 0.366 |
| Equivalent volume, Vas (l) | 22.42 |
| Effective piston area, Sd (cm²) | 226.98 |
| Moving mass, Mms (g) | 32.35 |
| Force factor, BL (T·m) | 11.92 |
| Voice coil inductance, Le (mH) | 0.78 |
| Linear excursion, Xmax (mm) | 7.3 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 50 |
| Cutout diameter (mm) | 187 |
| Mounting depth (mm) | 108 |
| Cone material | Treated paper |
| Magnet material | Ferrite |
| Weight (kg) | 3.1 |