Eighteen Sound ND1090 8 Ohm 1″ 50W Compression Driver

Eighteen Sound ND1090 8 Ohm 1″ 50W Compression Driver

General Specifications:

• Throat Diameter 1”, 25.4 mm
• Nominal Impedance 8Ω
• AES Power Rating 50 W (rms) above 1.6 kHz
• Sensitivity 110 dB
• Frequency Range 1600 Hz – 20 kHz
• Diaphragm Material Titanium, Polythylene
• Flux Density 2 T
• Magnet Composition Neodymium
• Bolt Circle Diameter @3”, 76 mm
• Mounting Holes Diameter 4 x M6 Holes at 90 degrees
• Total Depth 2.1”, 53 mm
• Unit Weight 2.6 lbs., 1.2 kg

Key Features:

• The (Eighteen) 18 Sound ND1090 1” exit neodymium high frequency compression driver has been designed for situations where the highest quality is required.
• Equipped with unique Phase Plug architecture, the ND1090 has been designed to give high level manufacturing consistency and a smooth coherent wavefront at the horn entrance across the whole working frequency range.
• The phase plug short openings and high flare rate value assure low distortion, showing remarkable improvements in mid-high frequency reproduction.
• The ND1090 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 aluminium 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. Moreover, this proprietary former material is also suitable for use in high moisture content environments.
• The powerful neodymium magnet assembly has been designed to obtain 20 KGauss in the gap giving major benefits in transient response.
• A copper ring on the pole piece reduces inductance above 10 kHz, improving phase and impedance linearization.
• 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 of the Eighteen Sound philosophy.
• Hence, in addition, a special treatment has been applied to the magnet and the top and back plates of the magnetic structure making the ND1090 driver more resistant to the corrosive effects of salts and oxidization.
• This treatment is more effective than any other treatment used by other manufacturers.
  

  Designed & manufactured in Italy and provided exclusively on-line by Lean Business, this Eighteen Sound compression driver comes complete with 2 years warranty.

Why Choose Lean Business Audio?

50 years of experience of designing, building and supplying Home, Car and Professional Audio.

Huge stocks of leading loudspeakers and audio brands
KEF, Celestion, Eminence, WGS, Montage, BMS Speakers, Faital Pro, Eighteen Sound, Ciare

Low Worldwide shipping rates.
Free Delivery on selected brands with the UK.
Price matching.

For more information please contact us at: +44(0)1473 744089
Or Email us at: sales@lean-business.co.uk