18 Sound 15NLW9500 Bass Speaker Key features 96 dB SPL 1W / 1m average sensitivity 100 mm (4 in) Interleaved Sandwich Voice coil (ISV) 1000 W continuous pink noise power handling External neodymium magnet assembly Double Silicon Spider (DSS) for improved excursion control and linearity Double Demodulating Rings (DDR) for lower distortion and improved heat dissipation Improved heat dissipation via Active Cooling System Weather protected cone and plates for outdoor usage Ideal for very low distortion subwoofer usage Description ?The 15NLW9500 is an extended low frequency loudspeaker which sets a new industry standard in 15" (380mm) neodymium 4" voice coil high performance transducers. The 15NLW9500 is derived from our flagship 15LW1500, after in-depth studies on magnetic circuit design which focused on dissipating the heat generated by the powerful 4" voice coil. Extensive care has been taken in order to symmetries both mechanical and electromagnetic non linear behaviour. The 15NLW9500 has been designed to cover the low frequency band in vented, bandpass and horn loaded configurations. Thanks to improved speaker design and the use of high grade materials, its applications range from studio monitors up to cinema subwoofers as well as professional sound reinforcing systems, where deep low frequencies are required. The 15NLW9500 has remarkable 35Hz downwards extension with 96dB average sensitivity and achievable peak power levels of 7kW. It can be used in enclosures from 90 liters in size upwards, with tuning frequencies of about 33Hz. It requires low frequency equalization in small enclosures, while bigger volumes require slightly less equalization for a similar output. Amplifier sizes of 700 to 1400W allow a maximum output from the loudspeaker with minimal risks when properly used.The neo magnet assembly assures high flux concentration, low power compression and excellent heat exchange. In fact, the external magnet configuration is considerably more efficient than the traditional under-pole magnet topology. This results in high levels of force factor and power handling with an optimum power to weight ratio. The heatsink has been specifically studied using F.E.A. simulators and the necessary heat transfer to the dissipative structure has been improved. The heatsink concept has been further improved by using an air-diffractor that offers high thermal capacity and has been designed to force air moved by the dust cap through the heat sink fins and cool it down. The direct contact between the heat sink and the basket, together with the magnetic structure, represents a fundamental improvement in heat dissipation, increasing power handling capabilities and lowering the power compression figure.The carbon fiber reinforced, straight-sided ribbed cone has been adopted in order to enable the transducer to withstand high loading designs as well as high power peaks. Maximum strength, smooth response and high displacement piston motion have been obtained using Double Silicon Spider technology (DSS) and a large excursion surround. The rubber suspension system has been designed to provide symmetric large signal behaviour throughout the whole working range, providing low harmonic distortion at different excitation levels. GENERAL SPECIFICATIONS ? Nominal Diameter 380mm (15 in) Rated Impedance 8 ohms Continuous Pink Noise? 1000W Continuous Power? 700W Program Power 1400W Peak Power? 7000W Sensitivity? 96dB Frequency Range? 42 - 2000 Hz Power Compression @ -10 dB? (70 W) 0,7 dB Power Compression @ -3 dB (350 W) 1,5 dB Power Compression @ Full Power (700 W) 2,6 dB Max Recomm. Frequency 500 Hz Recomm. Enclosure Volume 70 ? 150 lt. (2,47 ? 5,3 cuft) Minimum Impedance 6,4 ohms at 25?C Max Peak To Peak Excursion 35 mm (1,5 in) Voice Coil Diameter 100 mm (3,9 in) Voice Coil Winding Material copper THIELE SMALL PARAMETERS? ? Fs 35 Hz Re 4,9 ohms Sd 0,091 sq.mt. (141,1 sq.in.) Qms 6 Qes 0,34 Qts 0,32 Vas 163 lt. (5,8 cuft) Mms 146 gr. (322,3 lb) BL 21,6 Tm Linear Mathematical Xmax ?9 mm (?0,35 in) Le (1kHz) 0,8 mH Ref. Efficiency 1W@1m (half space) 95 dB MOUNTING INFORMATIONS ? Overall diameter 387 mm (15,2 in) N. of mounting holes 8 Mounting holes diameter 7,15 mm (0,3 in) Bolt circle diameter 370-371 mm (14,55-14,6 in) Front mount baffle cutout diameter 353 mm (13,9 in) Rear mount baffle cutout diameter 357 mm (14,1 in) Total depth 179 mm (7 in) Flange and gasket thickness 24 mm (0,9 in) Net weight 7 kg (15,5 lb) Shipping weight 7,8 kg (17,2 lb) CardBoard Packaging dimensions 405x405x214 mm (15,94x15,94x8,43 in)
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