18s NSD1095N 8 Ohm

18s NSD1095N 8 Ohm
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  • SW10282
The NSD1095N 1 inch exit neodymium compression driver has been designed for situations where the... mehr
Produktinformationen "18s NSD1095N 8 Ohm"
The NSD1095N 1 inch exit neodymium compression driver has been designed for situations where the highest quality is required. Equipped with proprietary phase plug architecture, the NSD1095N has been designed to give 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 and overall, this kind of phase plug demonstrates remarkable improvements in mid-high frequency reproduction. A further innovation in the NSD1095N is the titanium diaphragm nitrogen treatment, a proprietary technology defined as True Piston Motion - TPM technology developed after extensive research by Eighteen Sound. The coating is realized in a PVD - Physical Vapor Deposition - vacuum chamber. With its very high value of elasticity modulus (six times higher than titanium and two times higher than beryllium), the nitride thin film is capable of doubling the diaphragm overall stiffness with obvious benefits in terms of impulse response and intermodulation distortion reduction. The frequency response is then extended by 25%, showing a predictable, ideal pistonic behavior, avoiding top-end spurious resonances. An edge-wound copper-clad 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. 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 20KGauss 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. 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.


General Specifications HF

Throat Diameter 25,4 mm (1 in)
Rated Impedance 8 Ohm
D.C. Resistance 5,3 Ohm
Minimum Impedance 7 Ohm at 4000Hz
Le (1kHz) 67 µH
AES Power 50 W above 1,6 kHz
Program power (8) 100 W above 1,6 kHz
Sensitivity (9) 110 dB
Frequency Range 1600Hz - 20kHz
Recomm. Xover Frequency 1600Hz (12dB/oct slope)
Diaphragm material TiN coated Titanium
Voice Coil Diameter 44,4 mm (1 3/4 in)
Voice Coil winding material Edge-wound aluminum
Magnet material Neodymium
Flux Density 2 T
Bl Factor 9,1 N/A
Polarity Positive voltage on + terminal gives positive pressure in the throat

Mounting information

Overall diameter 93 mm (3,7 in)
N. of mounting holes and bolt 4 M6 holes 90° at Ø 76 mm (3 in)
Bolt circle diameter 76 mm (3 in)
Total depth 53 mm (2,1 in)
Net weight 1,1 Kg (2,42 lb)
Shipping weight 1,2 Kg (2,6 lb)
Packaging Dimensions 97x97x58 mm (3,8x3,8x2,3 in)
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