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 |
- Drawing
- Datasheet
