18s ND32ST 8 Ohm

The ND32ST 2 inch exit Natural Sound neodymium high frequency compression driver has been
designed to fulfill state of the art performances needed for present and future very high quality
sound reinforcement applications.
The next-gen titanium diaphragm is produced in house and has been developed to assure
unmatched transient response. The diaphragm assembly is made by joining the former directly to the
titanium dome on its upper bend edge. In comparison with a usual straight former joint, the driver's
design assures extended frequency energy transfer for improved response linearity and unparallel
reliability. This feature facilitates proper motion control of the dome in real working conditions. A
proprietary treated Nomex former is used as Nomex shows a 30% higher value of tensile elongation
at a working operative temperature (200°C) when compared to Kapton. Moreover, this proprietary
former material is also suitable for use in higher moisture content environments.
The ND32ST neodymium magnet assembly has been designed to obtain 21KGauss in the gap for
major benefits in transient response. The motor structure, throughout the precisely coherent
proprietary designed metal alloy phase plug with 4 circumferential slots and copper ring on the pole
piece, reduces inductance effect and distortion.
The diaphragm kit self-centering design allows high precision mounting and at the same time makes
very easy the servicing procedure.
The ability to perform properly under inclement weather conditions is a key point of the Eighteen
Sound philosophy. Hence, a special treatment is applied to the magnet and the top and back plates
of the magnetic structure in order to make the driver more resistant to the corrosive effects of salts
and oxidization. This treatment is more effective than any other coating commonly used.