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    Xjsueeb1
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    Alternative/Current Model:
    18NLW4000

    Features

    • 95 dB SPL 1W / 1m average sensitivity
    • 100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
    • 3200W program power handling
    • 70 mm (2,76 in) peak to peak excursion
    • Ultra linear dual magnet motor design
    • Single Demodulating Ring (SDR) for lower distortion
    • Composite reinforced straight ribbed cone
    • Optimized high grade ferrite magnet assembly
    • Recommended for subwoofer usage in compact vented enclosures

    The 18LW2500 is a 18" (466 mm) extended low frequency loudspeaker, 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 3400 Watt program power. The 18LW2500 features a unique motor featuring a high grade ferrit magnet assembly in a structure optimized for thermal and magnetic efficiency. 18LW2500 features include a large displacement suspension system which, in conjunction with a composite reinforced, straight ribbed cone and the Eighteen Sound proprietary Double Silicon Spider (DSS) technology, allows an ultra-linear piston action and provides full mechanical control across the entire working range. The 100mm (4 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.

    Specifications

    Design

    Parameters

    Mounting and Shipping Info

    • Nominal Diameter462 mm ( in)
    • Nominal Impedance8 Ω
    • Minimum Impedance6.1 Ω
    • Nominal Power Handling11600 W
    • Continuous Power Handling23200 W
    • Sensitivity395.0 dB
    • Frequency Range30 - 1000 Hz
    • Voice Coil Diameter100 mm (4.0 in)
    • Winding Materialcopper
    • Surround ShapeTriple roll
    • Cone ShapeStraight
    • Magnet MaterialFerrite
    • Woofer Cone TreatmentWater,UV repellent
    • Recommended Enclosure200.0 dm3 (7.06 ft3)
    • Recommended Tuning35 Hz
    • Resonance Frequency34 Hz
    • Re4.9 Ω
    • Qes0.34
    • Qms22.0
    • Qts0.33
    • Vas135.0 dm3 ( ft3)
    • Sd1130.0 cm2 (175.15 in2)
    • Xmax15.0 mm
    • Mms290.0 g
    • Bl30.0 Txm
    • Le2.87 mH
    • EBP100 Hz
    • Overall Diameter462 mm (18.19 in)
    • Bolt Circle Diameter440 mm (17.32 in)
    • Baffle Cutout Diameter416.0 mm (16.38 in)
    • Depth234 mm (9.21 in)
    • Flange and Gasket Thickness26 mm (1.02 in)
    • Net Weight16.7 kg (36.82 lb)
    • Shipping Weight18.2 kg (40.12 lb)
    • Shipping Box482x482x257 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.