Celestion NTR21-5010JD
Celestion NTR21 5010JD - 21 inch neodymium subwoofer with cast aluminium chassis, 98dB output sensitivity and a frequency range of 30-300Hz
| Brand | Celestion |
| Model | NTR21-5010JD |
| Kind | |
| Nominal diameter (mm) | 530 |
| Impedance (Ω) | 8 |
| Rated power (W) | 1600 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 98 |
| Frequency response | 30 Hz – 3000 Hz |
| Resonance frequency, fs (Hz) | 32.2 |
| DC resistance, Re (Ω) | 5.57 |
| Mechanical Q, Qms | 5.819 |
| Electrical Q, Qes | 0.339 |
| Total Q, Qts | 0.32 |
| Equivalent volume, Vas (l) | 276.7 |
| Effective piston area, Sd (cm²) | 1661.9 |
| Moving mass, Mms (g) | 344.1 |
| Force factor, BL (T·m) | 33.85 |
| Voice coil inductance, Le (mH) | 2.25 |
| Linear excursion, Xmax (mm) | 9 |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 125 |
| Cutout diameter (mm) | 492 |
| Mounting depth (mm) | 254 |
| Cone material | Carbon fibre loaded paper |
| Magnet material | Neodymium |
| Weight (kg) | 12.8 |