18 -sound 15NLW9500 Extended LF Neodymium Driver (4 of 8 ohm)

Beschrijving

Key features

• • 96 dB SPL 1W / 1m average sensitivity
  • 100 mm (4 in) Interleaved Sandwich Voice coil (ISV)
  • 1000 W AES 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
  • Rubber surround suspension system
  • Improved dissipation via onboard heatsink
  • Ideal for low distortion direct radiation subwoofers

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 has remarkable 35Hz downwards
extension with 96dB average sensitivity and achievable peak power
levels of 7kW.

Extensive care has been taken in order to symmetries both mechanical and
electromagnetic non linear behaviour. The transducer has been designed
to cover the low frequency band in vented, bandpass and horn loaded
configurations: the application range moves from studio monitors up to
cinema subwoofers as well as professional sound reinforcing systems,
where deep low frequencies are required. It can be used in enclosures
from 90 liters in size upwards, with tuning frequencies of about 33Hz.
Amplifier sizes of 700 to 1400W allow a maximum output from the
loudspeaker with no risks for the speaker when properly used.
The
neo magnet assembly assures high flux concentration, low power
compression and excellent heat exchange. 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 fins and cool it down.
The direct contact between the heatsink 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.