18s ND1085 8 Ohm

18s ND1085 8 Ohm
150,37 € * 214,20 € * (29,8% gespart)
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Lieferzeit 4 Werktage

  • SW10284
The ND1085 1 inch exit neodymium high frequency compression driver has been designed for... mehr
Produktinformationen "18s ND1085 8 Ohm"
The ND1085 1 inch exit neodymium high frequency compression driver has been designed for situations where the highest quality is required. Equipped with proprietary Phase Plug architecture, the ND1085 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 diaphragm is made with a proprietary treated Polyethylene material (PEN). Thanks to its superior dimensional stability up to 160°C, PEN is able to maintain constant behavior during its whole working life. Moreover, thanks to its high value of elasticity modulus (50% higher than Mylar and 100% higher than polyimide), it is capable of superior transient and intermodulation distortion response. The flat suspension shape has been designed to maintain low stiffness and low mid band distortion and response. The edge-wound aluminum voice coil, wound on custom 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 treated 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 ND1085 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 5,2 Ohm
Minimum Impedance 7,8 Ohm at 4000Hz
Le (1kHz) 66 µH
AES Power 40 W above 1,6 kHz
Program power (8) 80 W above 1,6 kHz
Sensitivity (9) 109 dB
Frequency Range 1600Hz - 20kHz
Recomm. Xover Frequency 1600Hz (12dB/oct slope)
Diaphragm material Polyethylene - PEN
Voice Coil Diameter 44,4 mm (1 3/4 inch)
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 92 mm (3,6 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 (2,4 lb)
Shipping weight 1,3 Kg (2,9 lb)
Packaging Dimensions 140x121x64 mm (5.5 x 4.8 x 2.5 in)
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