Eighteen Sound 18NLW4000

• 94 dB SPL 1W / 1m average sensitivity
• 100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
• 3200 Watt program power handling
• Composite reinforced straight ribbed cone
• Optimized high grade neodymium magnet assembly
• Recommended for subwoofer usage in compact vented or bandpass enclosures

General Specifications

Nominal Diameter462mm

Rated Impedance8 Ohm

AES Power1500 W

Program Power3200 W

Sensitivity94 dB

Frequency Range30 - 1800 Hz

Power Compression @-10dB0,62 dB

Power Compression @-3dB2,18 dB

Power Compression @Full Power3,57 dB

Max Recomm. Frequency250Hz

Recomm. Enclosure Volume130 - 350 lt (4.59 - 12.37 cuft)

Minimum Impedance6 Ohm at 25°C 

Max Peak To Peak Excursion70 mm (2.76 in)

Voice Coil Diameter100 mm (4 in)

Voice Coil Winding MaterialCopper 

SuspensionTriple roll,  Polycotton

ConeComplex Composite

Thiele Small Parameters

Fs35 Hz

Re5 Ohm

Sd0,113 sq.m (175,15 sq.in)

Qms22,0

Qes0,35

Qts0,34

Vas131 lt. (4.63 cu.ft)

Mms280 gr. (0,62 lb)

BL30,0 Tm

Linear Mathematical Xmax± 15 mm (± 0,59 in)

Le (1kHz)2,80 mH

Ref. Efficiency 1W@1m (half space)2%

Mounting information

Overall diameter462 mm (18,19 in)

N. of mounting holes and bolt8

Mounting holes diameter8,5 mm (0,33 in)

Bolt circle diameter440 mm (17,32 in)

Front mount baffle cutout ø416 mm (16,38 in)

Rear mount baffle cutout ø422 mm (16,61 in)

Total depth227 mm (8,93 in)

Flange and gasket thickness26 mm (1,02 in)

Net weight9,8 kg (21,6 lb)

Shipping weight11,3 kg (24,9 lb)

CardBoard Packaging dimensions482x482x257 mm (18,98x18,98x10,12 in)