SPEAKER 18SOUND 18" 18NLW9400

The 18NLW2400 is an 18 inch extended low frequency loudspeaker designed for high SPL subwoofer applications in either a reflex, bandpass or horn loaded configuration. Compared to our industry standard 18LW1400, the 18LW9400 provides higher maximum SPL, increased program power handling and lower power compression. For optimum results we recommend amplifiers able to deliver 2400 Watt program power without clipping. Transducer design features include a large displacement suspension system which, in conjunction with a fiberglass 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 100 mm (4 in) inside-outside copper voice coil based on Interleaved Sandwich Voice coil (ISV) technology provides high levels of thermal stability and durability. In order to furtherly increase power handling and reduce power compression figure, 18NLW9400 uses the same voice coil ventilation technology developed for our flagship 9000 neodymium transducer series. A special low density material air diffractor has been placed into the backplate acting as a cooling system, increasing power handling capability and lowering the power compression figure. As a final result Eighteen Sound engineers obtained almost 1 dB reduction in full power power compression value if compared to 18LW1400, and an increased program power handling value of 2400 Watt.18LW9400 is able to perform properly under inclement weather conditions: the exclusive cone treatment improves pulp strength and gives water repellent properties to both sides of the cone. In addition, the special treatment applied to top and back plates of the magnetic structure is far more resistant to the corrosive effects of salts and oxidization.

Eighteen Sound 18NLW9400 8 Ohm 18″ 1200W Loudspeaker

General Specifications: 

• Nominal Diameter 18”, 460 mm
• Rated Impedance 8Ω
• AES Power 1200 W (rms)
• Program Power 2400 W (rms)
• Peak Power 7000 W (rms)
• Sensitivity 98 dB
• Frequency Range 30 – 2500 Hz
• Power Compression @-10 dB 0,7 dB
• Power Compression @-3 dB 1,5 dB
• Power Compression @Full Power 2,2 dB
• Max Recomm. Frequency 500 Hz
• Recomm. Enclosure Volume 3.9 ÷ 12.36 cuft 110 ÷ 350 lt.
• Minimum Impedance 6,1Ω at 25°C
• Max Peak To Peak Excursion 2”, 50 mm
• Voice Coil Diameter 4”,100 mm
• Voice Coil Height 0.94”, 24 mm
• Voice Coil Winding Material Copper Round Wire
• Suspension Triple roll, Treated Polycotton
• Cone Straight ribbed, Fiberglass Reinforced Cellulose

Mounting Information:

• Overall Diameter 18.19”, 462 mm
• Mounting Holes Diameter 0.33”, 8 x 8,5 mm
• Bolt Circle Diameter 17.24-17.32”, 438-440 mm
• Front Mount Baffle Cutout Diameter 16.38”, 416 mm
• Rear mount baffle cutout diameter 16.61”, 422 mm
• Total depth 8.8”, 223.5 mm
• Flange and gasket thickness 1.02”, 26 mm
• Net weight 19.2 lb, 8.7 kg
• Shipping weight 21.8 lb, 9.9 kg
• Packaging dimensions 19 x 19 x 10,1”, 482 x 482 x 257 mm

Thiele Small Information: 

• Fs 33 Hz
• Re 5Ω
• Sd 189,88” sq. 0,1225 sq.mt.
• Qms 6,10
• Qes 0,28
• Qts 0,26
• Vas 9.47 cuft, 268 lt.
• Mms 0.40 lb, 180 gr.
• BL 26 Tm
• Linear Mathematical Xmax  ±0,37”,  ±9,5 mm
• Le (1 kHz) 1,90 mH
• Ref. Efficiency 1 W @ 1 m (half space) 97,4 dB

Key Features: 

• 8 dB SPL 1 W / 1 m average sensitivity.
• 4”, 100 mm Interleaved Sandwich Voice coil (ISV).
• 2400 W (rms) program power handling.
• Fiberglass reinforced straight ribbed cone.
• Double Silicon Spider (DSS) for increased excursion control and linearity.
• High grade neodymium magnet assembly.
• Recommended for subwoofer usage in compact vented or bandpass enclosures.
• Weather protected cone and plates for outdoor usage.