B&C 21SW152

Aprašymas

• 4000 W continuous program power capacity
• 153 mm (6 in) split winding copper voice coil
• 30 – 1000 Hz response
• 96 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 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 Dsign	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