(2) B&C 21SW152-4 21" Neodymium Subwoofer 4-Ohm DJ Live Sound 4000Watts Bass Sub

B&C 21SW152 21" Professional Neodymium Subwoofer Speaker 2000W 8-Ohm

Overview

The B&C 21SW152 is an advanced, lightweight subwoofer driver featuring 2,000 watts RMS power handling, a 1.18" long/6.0" diameter copper voice coil with very high thermal capability, and a ventilated neodymium magnet assembly that provides low power compression. An aluminum demodulation ring fitted to the 21SW152's pole piece reduces distortion.

Features:

• Lightweight but powerful FEA-optimized neodymium magnet
• Extremely high BL factor and Xmax for outstanding LF output
• 15 mm Xmax, 60 mm peak-to-peak excursion before damage
• 6.0" 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 spiderProduct Specifications
• Nominal Diameter 21" Power Handling (RMS) 2,000 Watts
• Power Handling (max) 4000 Watts Impedance 8 ohms
• Frequency Response 30 to 1,000 Hz Sensitivity 96 dB 1W/1m
• Voice Coil Diameter 6"

Thiele-Small Parameters

Resonant Frequency (Fs)

• 32 Hz

DC Resistance (Re)

• 3 ohms

Voice Coil Inductance (Le)

• 1.5 mH

Mechanical Q (Qms)

• 7

Electromagnetic Q (Qes)

• 0.31

Total Q (Qts)

• 0.3

Compliance Equivalent Volume (Vas)

• 7 ft.³

BL Product (BL)

• 32.5 Tm

Diaphragm Mass Inc. Airload (Mms)

• 460g

Maximum Linear Excursion (Xmax)

• 15 mm

Surface Area of Cone (Sd)

• 1680 cm²

Materials of Construction

Cone Material

• Coated Paper

Surround Material

• Cloth

Voice Coil Wire Material

• Copper

Voice Coil Former

• Fiberglass

Basket / Frame Material

• Cast Aluminum

Magnet Material

• Neodymium

 Mounting Information

Overall Outside Diameter

• 21.5"

Baffle Cutout Diameter

• 20"

Depth

• 10.3"

Bolt Circle Diameter

• 20.7"

# Mounting Holes

• 8