B&C R21DS115-4 Recone Kit For 21ds115-4 Neodymium Subwoofer Speaker 3400W 4-Ohm
This next evolution subwoofer uses a new, longer, four layer aluminum voice coil. The result is more energy in the gap, higher sensitivity, lower distortion and better overall performance. The 21DS115-4 features a 40mm long, 4.5 inch diameter (116mm) Copper Clad Aluminum Wire voice coil. With a 1700watt AES power rating, 97 dB sensitivity, and over 14.0mm of Xvar, this high energy subwoofer is a significant step forward from similar models in the B&C range.
B&C 21DS115-4 Specifications
Lightweight but powerful FEA-optimized neodymium magnet
Extremely high BL factor and Xmax for outstanding LF output
14 mm Xmax, 60 mm peak-to-peak excursion before damage
4.5" split winding copper voice coil on fiberglass former
Ventilated voice coil gap reduces power compression
Aluminum demodulation ring on pole piece reduces distortion
Double silicone spider
Nominal diameter: 530 mm (21.0 in)
Nominal impedance: 4 Ohm
Minimum impedance: 4.2 Ohm
Nominal power handling: 1700 W
Continuous power handling: 3400 W
Sensitivity (1W/1m): 97.0 dB
Frequency range: 33 - 1000 Hz
Voice coil diameter: 116 mm (4.5 in)
Winding material: Copper
Former material: Glass Fibre
Winding depth: 34 mm (1.34 in)
Magnetic gap depth: 14 mm (0.55 in)
Flux density: 1.15 T
