The extremely powerful external neodymium magnet assembly assures high flux concentration, low power compression and excellent heat exchange. The levels of force factor and power handling are, as a consequence, at a top professional level with an optimum power to weight ratio. A consistent heat transfer is guaranteed by the encapsulation of the magnetic structure in the interior of the basket, offering a large contact space between the back plate and the dissipating structure.
Particular effort was given to the surround shape and material design in order to minimise the resonances on mid range frequencies. The new design, realised with specified rubber based material density, offers a consistent dampening to typical bell modes.
The 45 mm voice coil is made from a light-weight aluminum wire and assures linearity and high power handling. A proprietary humidity-block cone treatment makes the transducer suitable for outdoor use in adverse weather conditions. In addition, a special coating applied to both the top and back plates makes the 6ND430 far more resistant to the corrosive effects of salts and oxidization.
The 6ND430 is a 6 inch neodymium woofer designed for low frequency reproduction in 2-way systems or multiway systems where both low weight and high intelligibility are required.
92,5 dB SPL 1W / 1m average sensitivity
45 mm (1,77 in) aluminum voice coil
200 W AES power handling
Neodymium motor assembly
Weather protected cone
Improved heat dissipation via unique basket design
Ideal for compact two way and multiway systems
General |
|
Product type | Cone driver |
Brand | Eighteen Sound |
Reference | 6ND430 |
Informations |
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Nominal impedance | 4 ohm |
Dimensional category | 6.5 inch, 7.5 inch |
Frequency coverage type | Midbass, Midrange, High midrange |
Manufacturer sensitivity | 92.5 dB |
Calculated sensitivity | 92.92 dB |
Nominal power handling | 200 W |
Max power handling | 260 W |
Bandwidth | 63÷5500 Hz |
Fundamental parameters |
|
Sd | 133 cm² |
Mms | 13.9 gr |
Cms | 451 µm/N |
Le | 0.17 mH |
Re | 2.9 ohm |
BL | 7.8 T.m |
Small signal parameters |
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Fs | 64 Hz |
Qes | 0.25 |
Qms | 6.5 |
Qts | 0.24 |
Vas | 12.2 L |
Datas |
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Xmax | ±5 mm |
EBP | 256 Hz |
Zmin | 3.7 ohm |
Fs / Qts | 267 Hz |
Vas * Qts² | 0.71 L |
Calculated efficiency | 1.23 % |
Weight | ~1.3 kg |
Dimensions |
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Voice coil diameter | 1.75 inch |
External dimensions | 162 | 185 mm |
Baffle cutout diameter | 148 mm |
Depth | 73 mm |
Front thickness | 9 mm |
Depth after front | 64 mm |
Shape & Materials |
|
Front chape | Non cylindrical |
Magnet type | Ferrite |
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