21 SW 115---21SW115 LF Drivers - B&C Speakers

specifications

More Info 21 SW 115—21SW115 LF Drivers – B&C Speakers
Nominal Diameter 530 mm (21.0 in)
Nominal Impedance 8 Ω
Minimum Impedance 6.2 Ω
Nominal Power Handling 1700 W
Continuous Power Handling 3400 W
Sensitivity 97.0 dB
Frequency Range 30 – 1000 Hz
Voice Coil Diameter 116 mm (4.5 in)
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
Magnet Material Neodymium Inside Slug
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 30 Hz
Re 5.4 Ω
Qes 0.39
Qms 10.9
Qts 0.37
Vas 318.0 dm3 (11.23 ft3)
Sd 1680.0 cm2 (260.4 in2)
η₀ 2.2 %
Xmax ± 14.0 mm
Xvar ± 16.0 mm
Mms 342.0 g
Bl 30.1 Txm
Le 2.1 mH
EBP 76 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)
Shipping Units 1
Shipping Weight 16.3 kg (35.94 lb)
Shipping Box 570x570x320 mm (22.44×22.44×12.60 in)
Recone kit RCK21SW1158

*All specifications are subject to change without notice.