$13.91
$26.85
Eighteen Sound 21LW2500 4 Ohm 21″ 1700W Loudspeaker Product description: The Eighteen Sound 21LW2500 is a 21″ (533 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 3600 Watt program power. The 21LW2500 features a unique motor featuring a high grade ferrit magnet assembly in a structure optimized for thermal and magnetic efficiency. 21LW2500 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. Key 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 Composite reinforced straight ribbed cone Optimized high grade ferrite magnet assembly Recommended for subwoofer usage in compact vented enclosures Product specifications: Nominal Diameter: 533 mm ( in) Nominal Impedance: 4 Ω Minimum Impedance: 3.0 Ω Nominal Power Handling: 1600 W Continuous Power Handling: 3200 W Sensitivity: 94.0 dB Frequency Range: 30 – 1800 Hz Voice Coil Diameter: 100 mm (4.0 in) Thiele Small Parameters: Resonance Frequency: 27 Hz Re: 2.6 Ω Qes: 0.39 Qms: 16.3 Qts: 0.38 Vas: 380.0 dm3 (13.42 ft3 ) Sd: 1660.0 cm3 (257.3 in3 ) η₀: 1.9 % Xmax: 15.0 mm Mounting information: Overall Diameter: 545 mm (21.46 in) Bolt Circle Diameter: 520 mm (20.47 in) Baffle Cutout Diameter: 492.0 mm (19.37 in) Depth: 245 mm (9.65 in) Flange and Gasket Thickness: 18 mm (0.71 in) Net Weight: 11.6 kg (25.57 lb) Shipping Weight: 13.1 kg (28.88 lb) Shipping Box: 570x570x290 mm (22.44×22.44x 11.42 in) Why Choose Lean Business Audio? 50 years of experience of designing, building and supplying Home, Car and Professional Audio. Huge stocks of leading loudspeakers and audio brands KEF, Celestion, Eminence, WGS, Montage, BMS Speakers, Faital Pro, Eighteen Sound, Ciare Low Worldwide shipping rates. Free Delivery on selected brands with the UK. Price matching. For more information please contact us at: 44(0)1473 744089 Or Email us at:
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