B&C 21DS115-8 21" Neodymium Subwoofer 3400 Watts Program 4.5" Coil 8-Ohm Pro Sub
- Continuous Power Handling
- Voice Coil Diameter
- Magnet Material
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 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.
Key Features
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3400 W continuous program power capacity
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116 mm (4.5 in) four layer aluminum voice coil
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30 - 1000 Hz response
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99 dB sensitivity
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60 mm peak-to-peak excursion before damage
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Neodymium magnet allows a very high force factor and linear excursion
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Double silicone spider with optimized compliance
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Ventilated voice coil gap for reduced power compression
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Aluminium demodulating ring for very low distortion
Specifications
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Nominal Diameter 530 mm (21.0 in)
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Nominal Impedance 8 Ohm
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Minimum Impedance 6.5 Ohm
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Nominal Power Handling 1700 W
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Continuous Power Handling 3400 W
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Sensitivity 99.0 dB
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Frequency Range 30 - 1000 Hz
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Voice Coil Diameter 116 mm (4.5 in)
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Winding Material Aluminium
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Former Material Glass Fibre
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Winding Depth 36.0 mm (1.42 in)
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Magnetic Gap Depth 14.0 mm (0.55 in)
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Flux Density 0.8 T
Parameters
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Resonance Frequency 30 Hz
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Re 5.1 Ohm
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Qes 0.24
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Qms 10.0
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Qts 0.23
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Vas 269.0 dm3 (9.5 ft3)
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Sd 1680.0 cm2 (260.4 in2)
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3.0 %
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Xmax 15.0 mm
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Xvar 16.5 mm
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Mms 407.0 g
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Bl 40.8 Txm
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Le 4.6 mH
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EBP 125 Hz
Mounting And Shipping Info
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Overall Diameter 547 mm (21.54 in)
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Bolt Circle Diameter 527 mm (20.7 in)
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Baffle Cutout Diameter 508.0 mm (20.0 in)
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Depth 255 mm (10.04 in)
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Flange and Gasket Thickness 13 mm (0.51 in)
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Air Volume Occupied by Driver 15.0 dm3 (0.53 ft3)
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Net Weight 14.8 kg (32.63 lb)
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Shipping Units 1
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Shipping Weight 17.1 kg (37.7 lb)
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Shipping Box 570x570x320 mm (22.44x22.44x12.60 in)
Service Kit
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RCK21DS1158