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18 Sound ND1070
Art.Nr.: 18SND1070
18-Sound ND1070 HF Neodymium Treiber
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Eighteensound
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18 Sound ND1070
SMALL SPECIFICATIONS
109 dB SPL 1W / 1m average sensitivity 1 inch exit throat 44 mm (1 3/4 inch) voice coil diameter 100 Watt continuous program power handling Pure titanium dome Patented phase plug design Neodymium magnetic structure Excellent thermal exchange
The ND1070 has been designed for use in high quality two-way audio systems. With a 1-inch throat exit, the ND1070 has been developed to match the XT1086 constant directivity horn.
Equipped with unique Phase Plug architecture (Patent n. WO 2004/040942), the ND1070 has been designed to give 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, the phase plug 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.
The big innovation in the ND1070 is its magnetic architecture. 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.
Due to the increase in use of high power audio systems at outdoor events or in marine environments, the ability to perform properly under inclement weather conditions is a key feature in 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 driver more resistant to the corrosive effects of salts and oxidization. This treatment is more effective than any other treatment used by other manufacturers.
SMALL SPECIFICATIONS
| 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 |
| Power handling | |
| Continuous Pink Noise (1) | 50W above 1,6 kHz |
| Continuous Program (2) | 100W above 1,6 kHz |
| Sensitivity(1W@1m) (3) | 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) |
The ND1070 has been designed for use in high quality two-way audio systems. With a 1-inch throat exit, the ND1070 has been developed to match the XT1086 constant directivity horn.
Equipped with unique Phase Plug architecture (Patent n. WO 2004/040942), the ND1070 has been designed to give 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, the phase plug 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.
The big innovation in the ND1070 is its magnetic architecture. 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.
Due to the increase in use of high power audio systems at outdoor events or in marine environments, the ability to perform properly under inclement weather conditions is a key feature in 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 driver more resistant to the corrosive effects of salts and oxidization. This treatment is more effective than any other treatment used by other manufacturers.
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