B & C  PROFESSIONAL COMPONENTS

21SW152 - 21" EXTREME POWER WOOFER 

THE B&C 21SW152 HAS A VERY LARGE 6" VOICE COIL, ALUMINUM DEMODULATION RING, 4,000 WATTS POWER, LIGHT NEO MAGNET W/ 15.0MM XMAX!

B&C 21SW152B&C 21SW152

21SW152

4 Ohm Version

 

Item Price: $711.21

8 Ohm Version

 

Item Price: $711.21

SPEAKER MODEL

21SW152

SPECIFICATIONS

Nominal Basket Diameter

21" / 530mm

Impedance

4 or 8 ohms

RMS Power Rating

2,000 Watts

Program Power  4,000 Watts  

Frequency Response

30Hz - 1.0kHz

Sensitivity (1W/1m)

96dB

Voice Coil Diameter

6" / 152.4mm

Winding Material Copper
Former Material Glass Fibre
Winding Depth 1.18" / 30mm
Magnetic Gap Depth .5" / 12mm
Flux Density 1.2T

RECOMMENDED CABINET SPECIFICATIONS

Cabinet Volume 6.7 cu. ft. / 190 Liters
Port Size 24" wide x 2.0" height  x 19.75" deep
Tuning Frequency 33Hz

MOUNTING INFORMATION

Overall Diameter 21.5" / 547mm
Bolt Circle Diameter 20.7" / 527mm
Baffle Cutout Diameter 20" / 508mm
Depth 10.3" / 261mm
Flange & Gasket Thickness .63" / 16mm
No. Of Mounting Holes 8
Net Weight 40.7 lbs./ 18.5 kg.
Shipping Weight 46 lbs./ 20.9 kg.

MATERIALS

Basket Cast Aluminum
Cone Paper
Cone Shape Radial
Spider Double Silicone
Surround Shape Triple Roll
Pole Design T-Pole
Magnet Neodymium

  THIELE-SMALL PARAMETERS

Resonant Frequency (fs)

32 Hz
Impedance (Re) 3.4 ohms
Electrical Factor (Qes) .31
Mechanical Q (Qms) 7.0
Total Q (Qts) .3
Compliance Equiv. Vol. (Vas) 200 Liters/7.0cu. ft.
Voice Coil Overhang (Xmax) 15.0mm
Reference Efficiency 2%
Surface Area of Cone .1680 m2
BL Factor 32.5 T-M
Coil Inductance (Le) 1.5mH
FREQUENCY RESPONSE IN BASS REFLEX CABINET
FREQUENCY RESPONSE
DRAWING

US Speaker, LLC