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12ND930 LF Neodymium Driver
Key features
- 98
dB SPL 1W / 1m average sensitivity
- 75 mm (3 in)
Interleaved Sandwich Voice coil (ISV)
- 500 W AES
power handling
- External neodymium magnet assembly
- Double
Demodulating Rings (DDR) for lower distortion
- Humidity
resistant cone
- Ideal for 2 way systems and compact
high loading subwoofer applications
Description
The
12ND930 is a high power, high output, low frequency woofer meeting the
most stringent requirements in high quality professional transducers.
The high level of performance and sound quality have been achieved by
exploiting the most advanced technologies available today.
Thanks
to its versatility, the 12ND930 can be used in two-way compact reflex
enclosures with a 1.4" compression driver, in multi-way systems and in
high loading sub woofers as small as 50 lt (compact reflex, band-pass
and hornloaded configurations).
The neodymium magnet
assembly assures high flux concentration, low power compression and
excellent heat exchange, since the external magnet configuration is
considerably more efficient than traditional under-pole magnet
topology. This results in high levels of force factor and power
handling with an optimum power to weight ratio. The direct contact
between the large heat sink and the basket, together with the magnetic
structure, represents a fundamental improvement in thermal connection
and heat dissipation. The result is increased power handling
capabilities and lower power compression.
The curvilinear
cone profile, created with a special high strength wood pulp, has been
designed to achieve the best possible linearity within its frequency
range. The cone surround in linen material is highly resistant to aging
and fatigue. The in-house developed cone treatment is a humidity
repellent and significant dampens bell mode resonance.
The
12ND930 employs our Interleaved Sandwich Voice coil (ISV) in which a
high strength fiberfiberglas former carries windings on both the outer
and inner surfaces to achieve a mass balanced coil. The final result is
an extremely linear motor assembly with a reduced tendency for
eccentric behavior when driven hard.
The already low
distortion and sound quality are further improved by Double
Demodulating Rings (DDR), that flatten impedance and phase figures with
a constant power transfer.
A special coating applied to both
the top and back plates makes the 12ND930 far more resistant to the
corrosive effects of salts and oxidization.
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