SPEAKER 18SOUND 15" 15NLW9401-4ohms

The 15NLW9401 is a 15" neodymium extended low frequency loudspeaker with 100mm (4in) diameter voice coil. It has been designed for use as a low bass or subwoofer component in either a more compact reflex, bandpass or horn loaded configuration. It provides clean, linear, undistorted low frequency reproduction at very high power levels. In its reflex configuration, it can be used in extremely compact enclosures (60 - 130 lt) with tuning frequency as low as 45 Hz. The high grade neodymium 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 high excursion capabilities of the surround and suspension system, in conjunction with the Double Silicon Spider (DSS), enable the 15NLW9401 to achieve high levels of linear travel and maintain full control of the moving mass. The 15NLW9401 features a dedicated fiberglass reinforced water repellent treated cone, showing a high damping mode behaviour. The suspension system provides symmetric large signal characteristics throughout the whole working range, providing low harmonic distortion at different excitation levels. The 100mm (4in) 4-layers Interleaved Sandwich Voice coil (ISV) provides high levels of thermal stability and durability. The weight of the windings are evenly distributed, providing a uniform motive drive. This, in conjunction with the use of high temperature resistant adhesives, results in an extremely linear motor assembly. The 15NLW9401 ability to perform properly under inclement weather conditions has been achieved using a special coating applied to metal plates.

GENERAL SPECIFICATIONS
Nominal Diameter 380mm (15 in)
Rated Impedance 4 ohms
AES Power 1200W
Program Power 2400W
Peak Power 7000W
Sensitivity 97,5 dB
Frequency Range 37 - 2300 Hz
Power Compression @ -10 dB 0,7 dB
Power Compression @ -3 dB 1,4 dB
Power Compression @ 0 dB 2,0 dB
Max Recomm. Frequency 500 Hz
Recomm. Enclosure Volume 60 ÷ 130 lt. (2,12 ÷ 4,59 cuft)
Minimum Impedance 7,2 ohms at 25°C
Max Peak To Peak Excursion 38 mm (1,53 in)
Voice Coil Diameter 100 mm (4 in)
Voice Coil Winding Material copper
Suspension Triple roll, Polycotton
Cone Straight ribbed, fiberglass reinforced water repellent treated paper

THIELE SMALL PARAMETERS
Fs 39 Hz
Re 5,2 ohms
Sd 0,09 sq.mt. (139,5 sq.in.)
Qms 4,13
Qes 0,28
Qts 0,26
Vas 134 lt (4,73 cuft)
Mms 140 gr (0,31 lb)
BL 25,4 Tm
Linear Mathematical Xmax ±10 mm (±0,39 in)
Le (1kHz) 1,9 mH
Ref. Efficiency 1W@1m (half space) 96,7 dB

MOUNTING INFORMATIONS
Overall diameter 393 mm (15,47 in)
N. of mounting holes 8
Mounting holes diameter 7,15 mm (0,28 in)
Bolt circle diameter 371 mm (14.6 in)
Front mount baffle cutout diameter 354 mm (13.93 in)
Rear mount baffle cutout diameter 360 mm (14.17 in)
Total depth 180 mm (7.13 in)
Flange and gasket thickness 12,5 mm (0.49 in)
Net weight 7,6 kg (16.78 lb)
Shipping weight 8,2 kg (18.96 lb)
CardBoard Packaging dimensions 405x405x214 mm (15,94x15.94x8,43 in)