Eighteen Sound ND1P 8 Ohm 1″ 50W Compression Driver

Eighteen Sound ND1P 8 Ohm 1″ 50W Compression Driver

General Specifications:

• Throat Diameter 1”, 25.4 mm
• Rated Impedance 8Ω
• DC Resistance 5.3Ω
• Minimum Impedance 6.9Ω at 4000 Hz
• Le (at 1 kHz) 67 µH
• AES power 50 W (rms) above 1.6 kHz
• Program power 100 W above 1.6 kHz
• Sensitivity (1W@1m) 110 dB
• Frequency Range 1600 Hz ÷ 20 kHz
• Recomm. Xover Frequency 1600 Hz (12 dB/oct slope)
• Diaphragm Material Treated Polyethylene
• Voice Coil Diameter 1 3/4”, 44.4 mm
• Voice Coil Winding Material Edge-wound Aluminium
• Magnet Material Neodymium
• Flux Density 2 T
• BL Factor 9.1 N/A
• Polarity Positive voltage on “+” terminal gives positive pressure in the throat

Key Features:

• 109 dB SPL 1W / 1m average sensitivity
• 1” exit throat
• 1.75” voice coil diameter
• 100 W program power handling
• True Piston Motion TiN coated titanium diaphragm
• Neodymium ring magnetic structure
• Proprietary phase plug design
• Excellent thermal exchange

The 18 Sound ND1P is a 1 inch exit neodymium high frequency compression driver specifically designed for high quality applications.
Equipped with proprietary phase plug architecture, the ND1P has been developed to give high level manufacturing consistency and smooth coherent wavefront at horn entrance over all the working frequency range.

This phase plug design, with its short openings and high flare rate value assures low distortion and remarkable
improvements in mid-high frequency reproduction.
The pure Pen diaphragm assembly exhibits constant slope response from 1.5kHz to 18kHz with uniform smooth roll-off behavior.

An edge-wound aluminum voice coil, wounded on proprietary treated Nomex, completes diaphragm assembly. Thanks to its physical properties, the proprietary treated Nomex former shows 30% higher value of tensile elongation at working operative temperature (200°C) when compared to Kapton.

A copper ring on the pole piece reduces inductance above 10 kHz improving phase and impedance linearization.
The ability to perform properly under inclement weather conditions is a key-point of the Eighteen Sound philosophy.

A special treatment is applied to the magnet and the top and back plates of the magnetic structure making the ND1TP driver more resistant to the corrosive effects of salts and oxidization than any other treatment used by any other manufacturer.

Designed & manufactured in Italy and provided exclusively by Lean Business, this Eighteen Sound speaker 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