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EIGHTEEN SOUND ND1020 8ohm

Šifra: 6855
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Opcija:

HF Neodymium Driver
Key features


108,5 dB SPL 1W / 1m average sensitivity
1 inch exit throat
34,4 mm (1 1/3 inch) voice coil diameter
Polyethylene Diaphragm
60W Program Power Handling
Compact Lightweight Neodymium Structure
Proprietary Phase Plug design

Downloads



 Data sheet


 Drawing






 
Description The ND1020 1-inch exit high frequency compression driver has been designed for use in situations where the highest possible sound quality is required.Polyethylene Naphthalate (PEN) has been used for the diaphragm assembly, giving to ND1020 a superior diaphragm dimensional stability compared to conventional Mylar film (160°C as a thermal rating compared to 105°C for PET) and maintaining a constant performance during its whole working life. PEN film, with its very high value of elasticity modulus (6000MPa compared to 4000MPa for PET and 2800MPa for polyimide film), is capable of a superior transient and intermodulation distortion response. The flat punched suspension shape has been designed to maintain low stiffness for superior low mid band distortion and response. An edge-wound copper clad aluminum voice coil wound on treated Nomex completes the diaphragm assembly. Nomex shows a 20% higher value of tensile elongation at 200°C than the value at room temperature, (in comparison, Kapton tensile elongation is 30% lower at 200°C than the value at room temperature). Hence, Nomex is capable of keeping energy transfer from the voice coil to the dome under control, especially when the voice coil reaches high temperatures. As a plus, treated Nomex former voice coil can work well even in high moisture content environments, thanks to its very low porosity.The ND1020 is equipped with unique Phase Plug architecture, designed to give smooth coherent wave front at the horn entrance over the whole working frequency range, as well as high level manufacturing consistency. The phase plug design shows short openings and high flare rate value, assuring low distortion and demonstrates remarkable improvements in mid-high frequency reproduction. By carefully using 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.



GENERAL SPECIFICATIONS


Throat Diameter
25,4 mm (1 in)


Rated Impedance
8 ohm


DC Resistance
5,8 Ohm


Minimum Impedance
6,5 Ohm at 5000Hz


Le (at 1kHz)
54 µH


AES power (1)
30 W above 2 kHz


Program power (2)
60 W above 2 kHz


Sensitivity(1W@1m) (3)
108,5 dB


Frequency Range
1600Hz ÷ 20kHz


Recomm. Xover Frequency
1600 Hz 12dB/oct slope


Diaphragm Material
Treated polyethylene


Voice Coil Diameter
34,4 mm (1 1/3 in)


Voice Coil Winding Material
Edge-wound aluminum


Magnet Material
Neodymium


Flux Density
1,8 T


BL Factor
6 N/A


Polarity
Positive voltage on red terminal gives positive pressure in the throat



 



MOUNTING INFORMATIONS


Overall diameter
85 mm (3,3 in)


Mounting holes diameter
2 M5 holes on Ø 76 mm (3 in)


Bolt circle diameter
58 mm (2,3 in


Total depth
40,5 mm (1,6 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)



 
ND1020 MEASURED WITH 1W INPUT ON RATED IMPEDANCE AT 1M DISTANCE ON XT1086 HORN MOUTH AXISFREE AIR IMPEDANCE MAGNITUDE CURVE
HF Neodymium Driver
Key features
  • 108,5 dB SPL 1W / 1m average sensitivity
  • 1 inch exit throat
  • 34,4 mm (1 1/3 inch) voice coil diameter
  • Polyethylene Diaphragm
  • 60W Program Power Handling
  • Compact Lightweight Neodymium Structure
  • Proprietary Phase Plug design
Downloads
 Data sheet
 Drawing
ND1020
 


Description
The ND1020 1-inch exit high frequency compression driver has been designed for use in situations where the highest possible sound quality is required.
Polyethylene Naphthalate (PEN) has been used for the diaphragm assembly, giving to ND1020 a superior diaphragm dimensional stability compared to conventional Mylar film (160°C as a thermal rating compared to 105°C for PET) and maintaining a constant performance during its whole working life. PEN film, with its very high value of elasticity modulus (6000MPa compared to 4000MPa for PET and 2800MPa for polyimide film), is capable of a superior transient and intermodulation distortion response. The flat punched suspension shape has been designed to maintain low stiffness for superior low mid band distortion and response.
An edge-wound copper clad aluminum voice coil wound on treated Nomex completes the diaphragm assembly. Nomex shows a 20% higher value of tensile elongation at 200°C than the value at room temperature, (in comparison, Kapton tensile elongation is 30% lower at 200°C than the value at room temperature). Hence, Nomex is capable of keeping energy transfer from the voice coil to the dome under control, especially when the voice coil reaches high temperatures. As a plus, treated Nomex former voice coil can work well even in high moisture content environments, thanks to its very low porosity.
The ND1020 is equipped with unique Phase Plug architecture, designed to give smooth coherent wave front at the horn entrance over the whole working frequency range, as well as high level manufacturing consistency. The phase plug design shows short openings and high flare rate value, assuring low distortion and demonstrates remarkable improvements in mid-high frequency reproduction.
By carefully using 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.

GENERAL SPECIFICATIONS
Throat Diameter 25,4 mm (1 in)
Rated Impedance 8 ohm
DC Resistance 5,8 Ohm
Minimum Impedance 6,5 Ohm at 5000Hz
Le (at 1kHz) 54 µH
AES power (1) 30 W above 2 kHz
Program power (2) 60 W above 2 kHz
Sensitivity(1W@1m) (3) 108,5 dB
Frequency Range 1600Hz ÷ 20kHz
Recomm. Xover Frequency 1600 Hz 12dB/oct slope
Diaphragm Material Treated polyethylene
Voice Coil Diameter 34,4 mm (1 1/3 in)
Voice Coil Winding Material Edge-wound aluminum
Magnet Material Neodymium
Flux Density 1,8 T
BL Factor 6 N/A
Polarity Positive voltage on red terminal gives positive pressure in the throat

 

MOUNTING INFORMATIONS
Overall diameter 85 mm (3,3 in)
Mounting holes diameter 2 M5 holes on Ø 76 mm (3 in)
Bolt circle diameter 58 mm (2,3 in
Total depth 40,5 mm (1,6 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)

 

ND1020 MEASURED WITH 1W INPUT ON RATED IMPEDANCE AT 1M DISTANCE ON XT1086 HORN MOUTH AXIS
ND1020 MEASURED WITH 1W INPUT ON RATED IMPEDANCE AT 1M DISTANCE ON XT1086 HORN MOUTH AXIS

FREE AIR IMPEDANCE MAGNITUDE CURVE
FREE AIR IMPEDANCE MAGNITUDE CURVE

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