B And C 21SW152-4 21-in 4000 Watt High Power Low Distortion Woofer [single]
International Customers: All electronic products are packaged for sale in the US with US voltage.This item is brand-new, factory sealed.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 distortionnominal diameter4 ohm
nominal impedance4.2 ohm
minimum impedance4000 w
continuous power handling2000 w
nominal power handling (aes)96 db
sensitivity (1w/1m)30 - 1000 hz
frequency range153 mm (6 in)
voice coil diametercopper
winding materialglass fibre
former materialneodymium ring
magnet material30 mm (1.18 in)
winding depth12 mm (0.5 in)
magnetic gap depth1.2 t
flux densitydesign
triple roll
surround shaperadial
cone shapeneodymium ring
magnet typedouble silicone
spidert-pole
pole design190 dm3 (6.71 ft3)
recommended enclosure volume33 hz
recommended tuning frequencyparameters
32 hz
fs3.4 ohm
re0.31
qes7
qms0.3
qts200 dm3 (7.00 ft3)
vas1680 cm2 (260.40 in2)
sd2.2 %
015 mm
xmax16 mm
xvar460 g
mms32.5 txm
bl1.5 mh
le103 hz
ebpmounting and shipping info
547 mm (21.5 in)
overall diameter527 mm (20.7 in)
bolt circle diameter508 mm (20 in)
baffle cutout diameter261 mm (10.3 in)
depth0.63 mm (16 in)
flange and gasket thickness16 dm3 (0.56 ft3)
air volume occupied by driver18.5 kg (40.7 lb)
net weight20.9 kg (46 lb)
shipping weight590x590x300 mm (23.2x23.2x11.8 in)
shipping boxservice kit..Rck21sw152 [single]