B&C 21DS115 - 4 ohm 21" 1700W Neodymium 4.5" Voice Coil Woofer *Special Order*

21" high efficiency Neodymium subwoofer.

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.

SPECIFICATIONS Nominal Diameter: 21", 530mm Nominal Impedance: 4 ohms Nominal Power: 1700 W rms, 3400 W program Freq. Response: 30 Hz-1.0 kHz Sensitivity: 99 db 1w/1m Voice Coil Diameter: 4.5", 116mm MOUNTING INFORMATION Overall Diameter: 21.54", 547mm Baffle Hole Dia: 20.0", 508mm Mounting BCD: 20.7", 527mm Depth: 10.04", 255mm Flange & Gasket Thickness: 0.51", 13mm

T/S PARAMETERS Fs: 30.0 Hz Re: 2.2 ohms Le: 2.4mH Qms: 11.0 Qes: 0.2 Qts: 0.21 Vas: 274 L, 9.68 cuft Xmax: 15mm CONSTRUCTION -Cast basket -Neodymium magnet with vented voice coil Full Product Specs From Manufacturer's Website