Eighteen Sound Speakers - Eighteen Sound 18ND9300 - Eighteen Sound 18ND930 18" woofer has a lightweight neodymium magnet. Eighteen Sound 18ND9300 18" subwoofers are available here. 18 Sound speaker components.

WOOFER MODEL	18ND9300
Specifications
Diameter	18" / 460mm
Impedance	8 ohms
Minimum Impedance	7 ohms @ 4.0 khz
D.C. Resistance	5.3 ohms
AES Power Rating	1,000 Watts
Program Power	1.400 Watts-2db above 50% duty cycle
Peak Power	7,000 Watts
Sensitivity (1W/1m)	98dB SPL
Frequency Response	28Hz - 2.5kHz
Recommended Crossover	500Hz
Voice Coil Diameter	4" / 100mm
BL Factor	24.4 TM
Recommended Enclosure Volume	3.53-10.6 cu. ft / 100-300Liters
Magnet	Neodymium
Mounting Information
Overall Diameter	18.19" / 462mm
Bolt Circle Diameter	17.24"-17.32" / 438-440mm
Baffle Cutout Diameter	16.38" / 416mm
No. Of Mounting Holes	8
Overall Depth	8.8" / 223.5mm
Flange & Gasket Thickness	1.02" / 26mm
Net Weight	16.78 lbs. / 7.6 kg.
Shipping Weight	19.78 lbs. / 9.0 kg.
Thiele-Small Parameters
Resonant Frequency (fs)	30 Hz
Impedance (Re)	5 ohms
Coil Inductance (Le)	2.02mH
Mechanical Q (Qms)	7.86
Electrical Factor(Qes)	.29
Total Q (Qts)	.28
Comp. Equivelant Vol. (Vas)	11.16 ft3 / 316 Liters
Voice Coil Overhang (Xmax)	9.5mm
Surface Area of Cone (Sd)m2	0.1225m2

	18ND9300
	18" EXTENDED LOW FREQUENCY NEODYMIUM WOOFER