18 -sound 21NLW9601 Extended LF Neodymium Driver (4 of 8 ohm)

Beschrijving

Key features

• • 97 dB SPL 1W / 1m average sensitivity
  • 135 mm (5.3 in) split winding four layers ISV copper coil
  • 3600 W program power handling
  • Ultra high force neodymium magnet
  • Triple Silicon Spider (TSS) for improved excursion control and linearity
  • Single Demodulating Ring (SDR) for lower distortion
  • Low noise forced ventilation design for low power compression
  • Weather protected cone and plates for outdoor usage
  • Suitable for high loading, high SPL subwoofer systems

Description

The 21NLW9600 is a 21 inch neodymium high performance transducer. The
transducer is suitable for high loading, ultra-low frequency horn
loaded or bandpass subwoofer designs.
For optimum results recommended amplifier should be able to deliver 3600 Watt program power without clipping.
Eighteen
Sound engineers have obtained the best possible results with today’s
available materials in terms of clean and undistorted LF reproduction
at a ultra high SPL, with the lowest possible power compression figure.
The
transducer design features include a large displacement suspension
system specifically designed for matching the carbon fiber reinforced,
straight ribbed cone.
The state-of-the-art 5,3″ diameter ISV copper
voice coil shows a inside-outside split winding, four layers design,
enabling the 21NLW9600 to handle up to 3600W program power.
Thanks
to the Triple Silicon Spider (TSS) technology, the 21NLW9600 is able to
control the moving mass with high linearity, showing an exceptional
stability of mechanical parameter values in the long term. Bl force
factor as well as all electro-dynamic parameters of 21NLW9600 are
linear within the working range. This, together with the high excursion
behavior – 70 mm before damage, ?14 mm linear Xmax – makes the
21NLW9600 an extremely low distortion, highly dynamic transducer.
The
already low distortion and sound quality are further improved by an
aluminum Single Demodulating Ring (SDR technology) that flatten
impedance and phase with a constant power transfer.
The 21NLW9600
has been developed after intense FEA and fluido-dynamics simulation and
testing, focusing on dissipating the heat generated by the powerful
5.3″ coil. Special attention was given to the optimization of air flow
into the gap without introducing audible noise. A special low density
material air diffractor placed into the backplate acts as a cooling
system, increasing the power handling capability and lowering the power
compression figure.
Weight reduction was a key development aspect of the 21NLW9600, resulting in a net value of 14kg (30,9lb).
The
exclusive cone treatment improves pulp strength and gives water
repellent properties to both sides of the straight ribbed cone. A
special coating applied to both the top and back plates makes the
transducer far more resistant to the corrosive effects of salts and
oxidization.