Brand: B&C SPEAKERS
Article number: 21ds115-8
B&C 21 DS 115 8 LF Driver
- 3400 W Continuous power handling
- 4.5 in (116 mm) Voice coil diameter
- Neodymium Inside Slug Magnet material
This next evolution subwoofer uses a new, longer, four layer aluminum voice coil. The result is more energy in the gap, less heat, higher sensitivity, higher power handling, lower distortion and better overall performance. The 21DS115 features a 36 mm long, 4.5 inch diameter (116mm) Copper Clad Aluminum Wire voice coil. With a 1700watt AES power rating, 99 dB sensitivity, and over 16.5mm of Xvar, this high energy subwoofer is a significant step forward from similar models in the B&C range, even approaching the performance of our 6” voice coil alternatives.
Type of speaker | 21″ |
Nominal Diameter mm | 530 mm |
Impedance Ohm | 8 Ω |
Power Handling | 3400 W |
Frequency range | 30 – 1000 Hz |
Sensitivity dB | 99.0 |
Magnet Material | Neodymium Inside Slug |
Brand | B&C SPEAKERS |
Type | speaker |
Nominal Diameter | 530 mm (21.0 in) |
Nominal Impedance | 8 Ω |
Minimum Impedance | 6.5 Ω |
Nominal Power Handling | 1700 W |
Continuous Power Handling | 3400 W |
Sensitivity | 99.0 dB |
Frequency Range | 30 – 1000 Hz |
Winding Material | Aluminium |
Former Material | Glass Fibre |
Winding Depth | 36.0 mm (1.42 in) |
Magnetic Gap Depth | 14.0 mm (0.55 in) |
Flux Density | 0.8 T |
Surround Shape | Triple Roll |
Cone Shape | Radial |
Spider | Double Silicone |
Pole Design | T-Pole |
Woofer Cone Treatment | TWP Waterproof Both Sides |
Recommended Enclosure | 130.0 dm3 (4.59 ft3) |
Recommended Tuning | 40 Hz |
Resonance Frequency | 30 Hz |
Re | 5.1 Ω |
Qes | 0.24 |
Qms | 10.0 |
Qts | 0.23 |
Vas | 269.0 dm3 (9.5 ft3) |
Sd | 1680.0 cm2 (260.4 in2) |
η₀ | 3.0 % |
Xmax | ± 15.0 mm |
Xvar | ± 16.5 mm |
Mms | 407.0 g |
Bl | 40.8 Txm |
Le | 4.6 mH |
EBP | 125 Hz |
Overall Diameter | 547 mm (21.54 in) |
Bolt Circle Diameter | 527 mm (20.7 in) |
Baffle Cutout Diameter | 508.0 mm (20.0 in) |
Depth | 255 mm (10.04 in) |
Flange and Gasket Thickness | 13 mm (0.51 in) |
Air Volume Occupied by Driver | 15.0 dm3 (0.53 ft3) |
Net Weight | 14.8 kg (32.63 lb) |
Recone kit | RCK21DS1158 |
Article | B&C 21ds115-8 |