21LW1400 Eighteen Sound 21LW1400 21" Subwoofer Speakers - Eighteen Sound 21LW1400 21" speakers - Eighteen Sound 21LW1400 is a 3,000 watt extended low frequency woofer that has goes down to 24Hz. Eighteen Sound 21LW1400 woofers are available here. 18 Sound speaker components.

WOOFER MODEL	21LW1400
Specifications
Diameter	21" / 533mm
Impedance	8 ohms
AES Power Rating	1,500 Watts
Program Power	3,000 Watts
Sensitivity (1W/1m)	99dB SPL
Frequency Response	24Hz - 2.0kHz
Recommended Crossover	250Hz
Voice Coil Diameter	4" / 100mm
BL Factor	33.5 TM
Recommended Enclosure Volume	4.24-17.7 cu. ft / 120-500Liters
Magnet	Ferrite
Mounting Information
Overall Diameter	21.46" / 545mm
Bolt Circle Diameter	20.47" / 520mm
Baffle Cutout Diameter	19.37" / 492mm
Overall Depth	10.1" / 256.3mm
Flange Thickness	.55" / 14mm
Net Weight	42.38 lbs. / 19.2 kg.
Shipping Weight	45.47 lbs. / 20.6 kg.
Thiele-Small Parameters
Resonant Frequency (fs)	28 Hz
Impedance (Re)	5.0 ohms
Coil Inductance (Le)	2.85mH
Mechanical Q (Qms)	9.32
Electrical Factor(Qes)	.242
Total Q (Qts)	.235
Comp. Equivelant Vol. (Vas)	13.6 ft3 / 385 Liters
Voice Coil Overhang (Xmax)	9.5mm
Surface Area of Cone (Sd)m2	0.1662m2
Frequency response in 250 Liter enclosure tuned to 28Hz

	21LW1400
	21" EXTENDED L.F. WOOFER