18-in 466 mm extended low frequency High Power loudspeaker, designed for use in vented, bandpass

18-in 466 mm extended low frequency loudspeaker, designed for use in vented, bandpass or even horn loaded enclosures. The loudspeaker is designed to withstand high power levels without damage while providing clean and undistorted LF reproduction at a very high SPL. For optimum results we recommend amplifiers able to deliver 3600 Watt program power. The 18NLW4500 features a unique motor featuring a high grade Neo magnet assembly in a structure optimized for thermal and magnetic efficiency. 18NLW4500 features include a large displacement suspension system which, in conjunction with a composite reinforced, straight ribbed cone and the Eighteen Sound proprietary SDR technology, allows an undiostorted ultra-linear piston action and provides full mechanical control across the entire working range. The 115mm 4.5 in state-of-the-art voice-coil utilizing Interleaved Sandwich Voice coil ISV technology, provides high levels of thermal stability and durability. The ISV technology achieves a balanced linear motor unit exerting an exceptionally high force factor. Nominal Impedance: 8 Ohms. Minimum Impedance: 6.1 Ohms. Nominal Power Handling: 1800 W. Continuous Power Handling: 3600 W. Sensitivity: 397.0 dB. Frequency Range: 30 - 1000 Hz. Voice Coil Diameter: 115 mm 4.5 in. Winding Material: copper