18s 15NLW9300 8 Ohm

18s 15NLW9300 8 Ohm
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  • SW10247
The 15NLW9300 is a low frequency loudspeaker which sets a new industry standard in 15" (380mm)... mehr
Produktinformationen "18s 15NLW9300 8 Ohm"
The 15NLW9300 is a low frequency loudspeaker which sets a new industry standard in 15" (380mm) neodymium 4" voice coil high performance transducers. The design has evolved from an extensive R&D program carried out at Eighteen Sound, providing clean, undistorted LF reproduction at very high SPL without damages. The transducer is mainly intended as woofer in compact vented enclosures (65 - 130 lit). The external neo magnet assembly assures high flux concentration, low power compression and excellent heat exchange, resulting in high levels of force factor and power handling with an optimum power to weight ratio. The aluminum heatsink has been specifically studied using F.E.A. simulators and the necessary heat transfer to the dissipative structure has been improved. The direct contact between the heatsink and the basket represents a fundamental improvement in voice coil heat dissipation. A special low density multi-cell material air diffractor has been also placed into the backplate venting hole, acting as a cooling system, furtherly increasing power handling capability and lowering the power compression figure. The suspension system has been designed to provide symmetric large signal behaviour throughout the whole working range, providing low harmonic distortion at different excitation levels. The 15NLW9300 features a dedicated exclusive carbon fibre reinforced straight ribbed cone, with a specific pulp formulation containing damping fibres. The membrane is impregnated with a proprietary resin mix in order to increase the cone bend performances - up to 6 times better if compared with traditional celluloses pulp, twice than glass fibre added pulps. The result is a very linear piston action across the entire working range reducing breaking modes, and makes the 15NLW9300 suitable for outdoor application. The performances are further improved by the proprietary Double Demodulating Rings technology (DDR), designed to reduce dramatically the intermodulation and harmonic distortion whilst improving the transient response. The 100mm (4in) copper clad aluminum wire Interleaved Sandwich Voice coil (ISV) provides high levels of thermal stability and durability.


General Specifications

Nominal Diameter 380mm (15 in)
Rated Impedance 8 Ohm
AES Power 800W
Program Power 1200W
Peak Power 2400W
Sensitivity 97dB
Frequency Range 50 - 3000 Hz
Power Compression @-10dB 0,6 dB
Power Compression @-3dB 2,1 dB
Power Compression @Full Power 3,0 dB
Max Recomm. Frequency 1200 Hz
Recomm. Enclosure Volume 65 - 150 lt. (2,30 - 5,30 cuft)
Minimum Impedance 8 Ohm at 25°C
Max Peak To Peak Excursion 37 mm (1,46 in)
Voice Coil Diameter 100 mm (4 in)
Voice Coil winding material copper clad aluminum
Suspension Triple roll, Polycotton
Cone Straight ribbed, carbon fiber reinforced cellulose

Thiele Small Parameters

Fs 39 Hz
Re 6 Ohm
Sd 0,09 sq.mt. (139,5 sq.in.)
Qms 6,7
Qes 0,274
Qts 0,26
Vas 170 lt. (6 cuft)
Mms 107 gr. (0,24 lb)
BL 24,4 Tm
Linear Mathematical Xmax ±8 mm (±0,31 in)
Le (1kHz) 0,95 mH
Ref. Efficiency 1W@1m (half space) 98 dB

Mounting information

Overall diameter 387 mm (15,24 in)
N. of mounting holes and bolt 8
Mounting holes diameter 7,15 mm (0,28 in)
Bolt circle diameter 370-371 mm (14,55-14,6 in)
Front mount baffle cutout ø 353 mm (13,9 in)
Rear mount baffle cutout ø 357 mm (14,06 in)
Total depth 174 mm (6,85 in)
Flange and gasket thickness 19,5 mm (0,76 in)
Net weight 6,8 kg (15 lb)
Shipping weight 7,9 kg (17,41 lb)
Packaging Dimensions 405x405x214 mm (15,94x15.94x8,43 in)
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