Data Sheet

15ND930
Extended Low Frequency Neo Transducer
Key Features
98 dB SPL 1W / 1m average sensitivity
75 mm (3 in) edgewound voice coil
500W AES power handling
Neodymium magnet assembly
Double Demodulating Rings (DDR) for lower distortion
Humidity resistant cone
Ideal for two way systems and for high loading compact
subwoofer applications
General Description
The 15ND930 is a high power, high output, extended low frequency
neodymium transducer which meets 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 15ND930 can be used in 2-way compact
reflex enclosures with a 1.4" compression driver, in multiway
systems and in high loading sub woofers as small as 70 lt (compact
reflex, bandpass and horn loaded 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 basket, together
with the magnetic structure, represent a fundamental improvement
in thermal connection and heat dissipation. Hence, power handling
capabilities are increased and power compression lowered.
The deep profile curvilinear cone, created from a special high
strength wood pulp, has been designed to achieve the best possible
linearity within its frequency range. The cone surround, made from a
linen material is highly resistant to aging and fatigue. The in-house
developed cone treatment is a humidity repellent and significantly
dampens bell mode resonances.
The 75mm (3in) copper edge-wound voice coil assembly is wound on
a strong fiberglas former to improve force transmission and power
handling.
The already low distortion and sound quality are further improved by
Double Demodulating Rings (DDR) that flatten impedance and
phase with a constant power transfer.
A special coating applied to both the top and back plates makes the
15ND930 far more resistant to the corrosive effects of salts and
oxidization.
022156N220 16 Ohm
022158N220 8 Ohm
022154N220 4 Ohm
NEODYMIUM LF-MB-MF TRANSDUCERS
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