18 -sound ND 1070 High Frequency Neodymium Driver (8/16 ohm)

Beschrijving

Key features

• • 109 dB SPL 1W / 1m average sensitivity
  • 1 inch exit throat
  • 44 mm (1 3/4 inch) edgewound aluminum voice coil
  • 100 Watt program power handling
  • Titanium dome over polyester suspension
  • Proprietary phase plug design
  • Neodymium magnetic structure
  • Excellent thermal exchange

Description

The ND1070 1-inch exit high frequency compression driver has been designed for use in high quality two-way audio systems.
Equipped
with Proprietary Phase Plug architecture, ND1070 shows high level
manufacturing consistency and a smooth coherent wavefront at the horn
entrance across the whole working frequency range. With its short
openings and high flare rate value, this phase plug configuration
assures low distortion and demonstrates remarkable improvements in
mid-high frequency reproduction.
The ND1070 diaphragm assembly is
composed of a titanium dome sandwiched to a proprietary treated
polyester suspension. This design maintains low resonance and lowers
the minimum crossover point value to 1.6 kHz.
An edge-wound
aluminum voice coil wound on proprietary treated Nomex completes the
diaphragm assembly. Nomex shows a 30% higher value of tensile
elongation at a working operative temperature (200?C) when compared to
Kapton. This feature enables proper energy transfer control from the
voice coil to the dome in real working conditions. Moreover, this
proprietary former material is also suitable for use in high moisture
content environments.
A copper ring on the pole piece reduces inductance above 10 kHz, improving phase and impedance linearization.
By
careful use of elementary pieces of neodymium magnets, Eighteen Sound
engineers have developed a powerful neodymium magnet assembly capable
of reaching 18KGauss in the gap within a compact and lightweight
structure.
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
leads to a lower power compression value.
The ability to perform
properly under inclement weather conditions is a key feature in
Eighteen Sound philosophy. A special treatment has been 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. This treatment is more effective than any other treatment
used by other manufacturers.