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EIGHTEEN SOUND ND1070

Šifra: 4885
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Opcija:

HF Neodymium Driver 8 Ohm

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
Pure titanium dome
Proprietary phase plug design
Neodymium magnetic structure
Excellent thermal exchange

The ND1070 1-inch throat igh frequency compression driver has been designed for use in high quality two-way audio systems.Equipped with Eighteen Sound 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. 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. 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 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.
 



GENERAL SPECIFICATIONS


Throat Diameter
25,4 mm (1 in)


Rated Impedance
8 ohm


DC Resistance
5,3 Ohm


Minimum Impedance
7 Ohm at 4000Hz


Le (at 1kHz)
67 µH


AES power 
50 W above 1,6 kHz


Program power 
100 W above 1,6 kHz


Sensitivity(1W@1m)
109 dB


Frequency Range
1600Hz ÷ 20kHz


Recomm. Xover Frequency
1600Hz (12dB/oct slope)


Diaphragm Material
Pure Titanium dome


Voice Coil Diameter
44,4mm (1 3/4 in)


Voice Coil Winding Material
Edge-wound aluminum


Magnet Material
Neodymium


Flux Density
1,8 T


BL Factor
8,2 N/A


Polarity
Positive voltage on “+” terminal gives positive pressure in the throat



 



MOUNTING INFORMATIONS


Overall diameter
98 mm (3,9 in)


Mounting holes diameter
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
1,2 Kg (2,6 lb)


CardBoard Packaging dimensions
97x97x58 mm (3,8x3,8x2,3 in)



ND1070 MEASURED WITH 1W INPUT ON RATED IMPEDANCE AT 1M DISTANCE ON XT1086 HORN MOUTH AXIS

 
FREE AIR IMPEDANCE MAGNITUDE CURVE
HF Neodymium Driver 8 Ohm
  • 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
  • Pure titanium dome
  • Proprietary phase plug design
  • Neodymium magnetic structure
  • Excellent thermal exchange

The ND1070 1-inch throat igh frequency compression driver has been designed for use in high quality two-way audio systems.
Equipped with Eighteen Sound 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.
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.
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 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.

 

GENERAL SPECIFICATIONS
Throat Diameter 25,4 mm (1 in)
Rated Impedance 8 ohm
DC Resistance 5,3 Ohm
Minimum Impedance 7 Ohm at 4000Hz
Le (at 1kHz) 67 µH
AES power  50 W above 1,6 kHz
Program power  100 W above 1,6 kHz
Sensitivity(1W@1m) 109 dB
Frequency Range 1600Hz ÷ 20kHz
Recomm. Xover Frequency 1600Hz (12dB/oct slope)
Diaphragm Material Pure Titanium dome
Voice Coil Diameter 44,4mm (1 3/4 in)
Voice Coil Winding Material Edge-wound aluminum
Magnet Material Neodymium
Flux Density 1,8 T
BL Factor 8,2 N/A
Polarity Positive voltage on “+” terminal gives positive pressure in the throat

 

MOUNTING INFORMATIONS
Overall diameter 98 mm (3,9 in)
Mounting holes diameter 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 1,2 Kg (2,6 lb)
CardBoard Packaging dimensions 97x97x58 mm (3,8x3,8x2,3 in)

ND1070 MEASURED WITH 1W INPUT ON RATED IMPEDANCE AT 1M DISTANCE ON XT1086 HORN MOUTH AXIS

 

FREE AIR IMPEDANCE MAGNITUDE CURVE

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