B&C R21DS115-8 Recone Kit For 21DS115-8 Neodymium Subwoofer Speaker 3400W 8-Ohms

B&C 21DS115-8 21" Neodymium Subwoofer 3400 Watts Program 4.5" Coil 8-Ohm Pro Sub

• 3400 W Continuous Power Handling

• 3400 W Continuous Power Handling

• 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, 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

• 3400 W continuous program power capacity

• 116 mm (4.5 in) four layer aluminum voice coil

• 30 - 1000 Hz response

• 99 dB sensitivity

• 60 mm peak-to-peak excursion before damage

• Neodymium magnet allows a very high force factor and linear excursion

• Double silicone spider with optimized compliance

• Ventilated voice coil gap for reduced power compression

• Aluminium demodulating ring for very low distortion

Specifications

• Nominal Diameter 530 mm (21.0 in)

• Nominal Impedance 8 Ohm
  

• Minimum Impedance 6.5 Ohm
  

• Nominal Power Handling 1700 W

• Continuous Power Handling 3400 W

• Sensitivity 99.0 dB

• Frequency Range 30 - 1000 Hz

• Voice Coil Diameter 116 mm (4.5 in)

• 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

Parameters

• Resonance Frequency 30 Hz

• Re 5.1 Ohm
  

• Qes 0.24

• Qms 10.0

• Qts 0.23

• Vas 269.0 dm3 (9.5 ft3)

• Sd 1680.0 cm2 (260.4 in2)

• 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

Mounting And Shipping Info

• 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)

• Shipping Units 1

• Shipping Weight 17.1 kg (37.7 lb)

• Shipping Box 570x570x320 mm (22.44x22.44x12.60 in)