B&C 21SW152 - 4 Ohm

B&C 21SW152 - 21" 2000W 4 Ohm Loudspeaker

• 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 diameter 530 mm (21.0 in)
• Nominal impedance 4 ohms
• Minimum impedance 4.2 ohms
• Nominal power handling 2000 W
• Continuous power handling 4000 W
• Sensitivity (1W/1m) 96.0 dB
• Frequency range 30 - 1000 Hz
• Voice coil diameter 153 mm (6.0 in) Winding material
• Copper
• Former material Glass Fibre
• Winding depth 30 mm (1.18 in)
• Magnetic gap depth 12 mm (0.5 in)
• Flux density 1.2 T

• Surround shape Triple Roll
• Cone shape Radial
• Magnet material Neodymium Inside Slug
• Spider Double Silicone
• Pole design T-Pole
• Woofer cone treatment TWP Waterproof Both Sides
• Recommended enclosure 190.0 dm3 (6.71 ft3)
• Recommended tuning 33 Hz

• Fs 32 Hz
• Re 3.3 ohms
• Qes 0.31
• Qms 7.0
• Qts 0.3
• Vas 200.0 dm3 (7.0 ft3)
• Sd 1680.0 cm2 (260.4 in2)
• Reference efficiency 2.2 %
• Xmax 15.0 mm
• Xvar 16.0 mm
• Mms 460 g
• Bl 32.5 Txm
• Le 1.5 mH
• EBP 103 Hz

• Overall diameter 547 mm (21.5 in)
• Bolt circle diameter 527 mm (20.7 in)
• Baffle cutout diameter 508.0 mm (20.0 in)
• Depth 261 mm (10.3 in)
• Flange and gasket thickness 16 mm (0.63 in)
• Air volume occupied by driver 16.0 dm3 (0.56 ft3)
• Net weight 18.5 kg (40.7 lb)
• Shipping weight 20.9 kg (46.0 lb)
• Shipping box 590x590x300 mm (23.2x23.2x11.8 in)