The 18NLW4100 is a 18" (466 mm) ultra light extended low frequency loudspeaker,especially designed for use in vented 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 3000 Watt program power. The 18NLW4100 features a unique motor featuring a high grade Neo magnet assembly in a structure optimized for thermal and magnetic efficiency. 18NLW4100 features include a large displacement suspension system which, in conjunction with a composite reinforced, straight ribbed cone, allows an ultra-linear piston action and provides full mechanical control across the entire working range. The 100mm (4 in) state-of-theart 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.
Mounting and Shipping Info
Nominal Impedance4 Ω
Minimum Impedance5.9 Ω
Nominal Power Handling11500 W
Continuous Power Handling23000 W
Frequency Range30 - 800 Hz
Voice Coil Diameter100 mm (4.0 in)
Surround ShapeTriple roll
Woofer Cone TreatmentWeather protected
Recommended Enclosure120.0 dm3 (4.24 ft3)
Recommended Tuning33 Hz
Resonance Frequency29 Hz
Vas207.0 dm3 (7.31 ft3)
Sd1225.0 cm2 (189.88 in2)
Overall Diameter462 mm (18.19 in)
Bolt Circle Diameter440 mm (17.32 in)
Baffle Cutout Diameter416.0 mm (16.38 in)
Depth232 mm (9.13 in)
Flange and Gasket Thickness23 mm (0.91 in)
Net Weight10.0 kg (22.05 lb)
Shipping Weight11.0 kg (24.25 lb)
2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minimum 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.