Eighteen Sound 15NLW4500-8 18 Sound 15"HIGHLIGHT || 115mm (4.5in) Interleaved Sandwich Voice coil (ISV) || Weather protected cone and plates || Great heat dissipation capability || Ultra linear suspension system || Neo motor for high power and very efficient thermal || exchange || Single demodulating ring (SDR) for distortion reduction and maximum SPL || DESIGN || Recommended Enclosure : 50.0 dm3 (1.77 ft3) || Recommended Tuning : 45 Hz || ""SPECIFICATIONS || Nominal Impedance : 8 Ω || Minimum Impedance : 6.7 Ω || Nominal Power Handling1 : 1500 W || Continuous Power Handling2 : 3000 W || Sensitivity3 : 96.3 dB || Frequency Range : 40 - 1000 Hz || Voice Coil Diameter : 115 mm (4.53 in) ||"MOUNTING AND SHIPPING INFO || Overall Diameter : 393 mm (15.47 in) || Bolt Circle Diameter : 371 mm (14.61 in) || Baffle Cutout Diameter : 356.0 mm (14.02 in) || Depth : 199 mm (7.83 in) || Flange and Gasket Thickness : 15 mm (0.61 in) || Net Weight : 11.4 kg (25.13 lb) || Shipping Weight : 12.6 kg (27.78 lb) || "The 15NLW4500 is a 15" extended low frequency loudspeaker, designed for use in vented, bandpass or even horn loaded ì enclosures. The loudspeaker is designed to withstand high power levels without damage while providing clean & undistorted LF reproduction at a very high SPL. For optimum results we recommend amplifiers able to deliver 3000 Watt program power. A unique motor featuring a high grade Neo magnet assembly in a structure optimized for thermal & magnetic efficiency.A large displacement suspension system which in conjunction w/a composite reinforced straight ribbed cone & the 18-Sound proprietary SDR technology allows undiostorted ultralinear piston action & provides full mechanical control across the entire working range. The state-of-the-art voice-coil utilizing Interleaved Sandwich Voice coil technology provides high levels of thermal stability & durability. ISV technology achieves a balanced linear motor unit exerting exceptionally high force factor.
