18 -sound NSD1480N HF Neodymium Driver (8 of 16 oh

Beschrijving

Key features

• • 111 dB 1W / 1m average sensitivity
  • 1,4 inch exit throat
  • 3 inch voice coil diameter
  • 200W program power handling
  • Titanium Nitride Coated Dome
  • True Piston Motion TiN coated titanium diaphragm
  • High grade neodymium magnetic structure
  • Excellent thermal exchange

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Description

NSD1480N 1.4 inch exit, 3″ voice coil neodymium compression driver has
been designed for top quality sound systems application.
A
great innovation in the NSD1480N is the titanium nitride coated dome –
so called TPM True Piston Motion technology – that dramatically
improves stiffness with obvious benefits in transient and
intermodulation distortion response. With its very high value of
elasticity modulus (six times higher than titanium and two times higher
than beryllium), nitride coated film is capable of doubling the
titanium stiffness. The piston frequency range motion extends frequency
by 25%, showing a predictable, ideal frequency response decay and
avoiding top-end spurious resonances. The nitride-free ellipsoidal
suspension shape has been designed to maintain constant titanium
stiffness, assuring a 3rd harmonic distortion lower than 0.05% over the
whole working frequency range.
The titanium diaphragm is produced
in-house and has been developed to assure unmatched transient response.
The diaphragm assembly is made joining the former directly to the
titanium dome on its upper bend edge. In comparison with a usual
straight former joint, the driver design assures extended frequency
energy transfer for improved response linearity and unparallel
reliability. This feature allows proper motion control of the dome in
real working conditions. A proprietary treated Nomex former shows a 30%
higher value of tensile elongation at a working operative temperature
(200?C) when compared to Kapton. This proprietary former material is
also suitable for use in higher moisture content environments.
The
NSD1480N powerful neodymium magnet assembly has been designed to obtain
22KGauss in the gap for major benefits in transient response. The motor
structure, throughout the precisely coherent phase plug with 3
circumferential slots and copper ring on the pole piece, reduces
inductance effect and distortion. Four top plate air ducts have been
designed to act as a loading chamber for the diaphragm, implementing
mid band distortion and response figures.
The custom designed O-ring creates a tight seal between the plate and the cover assuring air chamber loading.
Excellent
heat dissipation and thermal exchange are guaranteed by the direct
contact between the magnetic structure and the aluminum cover which
gives a lower power compression value.
A special treatment is
applied to the magnet and the top and back plates of the magnetic
structure making the driver more resistant to the corrosive effects of
salts and oxidization.