This double voice coil subwoofer benefits from a polypropylene cone with high rigidity, a crucial requirement in the low end for preventing distortion at a very high volume.
Equipped with double ferrite magnets and 2” (50mm) voice coils, these subwoofers combine high sensitivity and high power handling. The 2 x 4 ohms double voice coil is the perfect finishing touch to the mechanical design. This allows the subwoofer to be wired in parallel under 2 ohms in order to get the most from your amplifier.
| Model | RSB-250 |
|---|---|
| Manufacturer | Focal |
| Weight | 7.500000 |
| Subwoofer Size | 10" |
| RMS Power Rating | 250W RMS |
| Max Power Rating | 500W |
| Frequency Response (Hz) | 35Hz-500Hz |
| Sensitivity (dB @ 2.83V/1M) | 88dB |
| Cone Material | Polypropylene |
| Surround Type | Butyl |
| Nominal Impedance: | 4Ω |
| DC Resistance | 3.2Ω + 3.2Ω |
| VC diameter | 50mm |
| Voice Coil Diameter (inch/mm) | 2″ (50mm) |
| Fs-Free Air Resonance (Hz) | 29Hz |
| Vas (Liter) | 42l |
| Qts | 0.59 |
| Qes | 0.68 |
| Qms | 4.7 |
| Re (Ω)[series] | 3.2Ω + 3.2Ω |
| Sd (cm2) | 307cm2 |
| Cms (mm/N) | 0.3mm/N |
| Mms (g) | 93g |
| BL | 6.7 N/A |
| Mounting Diameter (inch/mm) | 10″ (250mm) |
