The 18NLW9000 is an extended low frequency 18 inch neodymium high performance transducer. The loudspeaker has been designed for use as a subwoofer component, in either a reflex or bandpass high SPL demanding applications. For optimum results recommended amplifier should be able to deliver 3600 Watt program power. At the heart of teh transducer stands a double silicon spider based on DSS technology let the 18NLW9000 being able to control the moving mass with high linearity, showing an exceptional stability of mechanical parameter values in the long term. The state-of-the-art 5,3" diameter ISV copper clad aluminum wire CCAW voice coil shows a inside-outside split winding, four layers design, enabling the 18NLW9000 to handle up to 3600W program power. Bl force factor, as well as all other electro-dynamic parameters, are linear within the working range. This, together with the exceptional high excursion behavior - 70mm before damage, ±14mm linear Xmax - makes the 18NLW9000 an extremely low distortion, highly dynamic transducer. The 18NLW9000 has been developed after intense FEA and fluidodynamics simulation and testing, focusing on dissipating the heat generated by the powerful voice coil. Special attention was given to the optimization of air flow into the gap without introducing audible noise. A low-density foam diffractor placed into the vent hole acts as a cooling system, increasing the power handling capability and lowering the power compression figure. The reinforced, straight ribbed cone shows a proprietary treatment for extra pulp strength and water repellent properties. A special coating applied to both the top and back plates makes the transducer far more resistant to the corrosive effects of salts and oxidization.
Mounting and Shipping Info
Nominal Impedance8 Ω
Minimum Impedance6.7 Ω
Nominal Power Handling11800 W
Continuous Power Handling23600 W
Frequency Range32 - 2500 Hz
Voice Coil Diameter135 mm (5.31 in)
Surround ShapeTriple roll
SpiderDouble Silicon Spider
Recommended Enclosure200.0 dm3 (7.06 ft3)
Recommended Tuning36 Hz
Resonance Frequency34 Hz
Vas206.0 dm3 (7.27 ft3)
Sd1222.0 cm2 (189.41 in2)
Overall Diameter462 mm (18.19 in)
Bolt Circle Diameter440 mm (17.32 in)
Baffle Cutout Diameter422.0 mm (16.61 in)
Depth237 mm (9.35 in)
Flange and Gasket Thickness26 mm (1.02 in)
Net Weight12.5 kg (27.56 lb)
Shipping Weight14.0 kg (30.86 lb)
Shipping Box482 x 482 x 257 mm (18.98x18.98x10.12 in)
2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated nominal impedance. Loudspeaker in free air.
Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance.