The 12ND730 transducer has been designed to meet market demand for high output woofers, capable of providing deep bottom-end in bandpass, horn or small reflex enclosures. The level of distortion is kept very low within its application range.
The 12ND730 is suitable for high loading enclosures, such as subwoofers or 2-way system reflex enclosures when coupled with a 1.4"-2" compression driver.
The neodymium magnet assembly developed by Eighteen Sound engineers 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 deep profile curvilinear cone, made 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-like material is highly resistant to aging and fatigue. The in-house developed cone treatment is fully water repellent and also gives a significant degree of rigidity to the cone.
The 75 mm Interleaved Sandwich Voice coil (ISV) assembly is wound on a strong fiberglas former that improves force transmission and thermal power handling.
The 4 threaded backplate holes give the user the possibility to insert an external-customised heat sink if further heat dissipation is required.
A special coating applied to both the top and back plates makes the 12ND730 far more resistant to the corrosive effects of salts and oxidization.