Brand: B&C SPEAKERS
Article number: 21sw115-4
B&C 21 SW 115 4 LF Driver
- 3400 W Continuous power handling
- 4.5 in (116 mm) Voice coil diameter
- Neodymium Inside Slug Magnet material
Type of speaker | 21″ |
Nominal Diameter mm | 530 mm |
Impedance Ohm | 4 Ω |
Power Handling | 3400 W |
Frequency range | 33 – 1000 Hz |
Sensitivity dB | 97.0 |
Magnet Material | Neodymium Inside Slug |
Brand | B&C SPEAKERS |
Type | speaker |
Nominal Diameter | 530 mm (21.0 in) |
Nominal Impedance | 4 Ω |
Minimum Impedance | 4.2 Ω |
Nominal Power Handling | 1700 W |
Continuous Power Handling | 3400 W |
Sensitivity | 97.0 dB |
Frequency Range | 33 – 1000 Hz |
Winding Material | Copper |
Former Material | Glass Fibre |
Winding Depth | 34.0 mm (1.34 in) |
Magnetic Gap Depth | 14.0 mm (0.55 in) |
Flux Density | 1.15 T |
Surround Shape | Triple Roll |
Cone Shape | Radial |
Spider | Double Silicone |
Pole Design | T-Pole |
Woofer Cone Treatment | TWP Waterproof Both Sides |
Recommended Enclosure | 250.0 dm3 (8.83 ft3) |
Recommended Tuning | 32 Hz |
Resonance Frequency | 33 Hz |
Re | 3.6 Ω |
Qes | 0.37 |
Qms | 7.7 |
Qts | 0.36 |
Vas | 278.0 dm3 (9.7 ft3) |
Sd | 1680.0 cm2 (260.4 in2) |
η₀ | 2.6 % |
Xmax | ± 14.0 mm |
Xvar | ± 15.0 mm |
Mms | 335.0 g |
Bl | 24.8 Txm |
Le | 1.7 mH |
EBP | 89 Hz |
Overall Diameter | 547 mm (21.5 in) |
Bolt Circle Diameter | 527 mm (20.7 in) |
Baffle Cutout Diameter | 503.0 mm (19.8 in) |
Depth | 249 mm (9.8 in) |
Flange and Gasket Thickness | 14 mm (0.53 in) |
Air Volume Occupied by Driver | 15.0 dm3 (0.53 ft3) |
Net Weight | 14.0 kg (30.8 lb) |
Recone kit | RCK21SW1154 |
Article | B&C 21sw115-4 |