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.
Mounting and Shipping Info
Nominal Diameter380 mm ( in)
Nominal Impedance4 Ω
Minimum Impedance3.7 Ω
Nominal Power Handling1500 W
Continuous Power Handling2800 W
Frequency Range40 - 4100 Hz
Voice Coil Diameter75 mm (3.0 in)
Woofer Cone TreatmentWeather protected
Recommended Enclosure110.0 dm3 (3.88 ft3)
Recommended Tuning40 Hz
Resonance Frequency35 Hz
Vas182.0 dm3 (6.43 ft3)
Sd850.0 cm2 (131.75 in2)
Overall Diameter387 mm (15.24 in)
Bolt Circle Diameter370 mm (14.57 in)
Baffle Cutout Diameter353.0 mm (13.9 in)
Depth177 mm (6.97 in)
Flange and Gasket Thickness11 mm (0.43 in)
Net Weight4.7 kg (10.36 lb)
Shipping Weight5.7 kg (12.57 lb)
Shipping Box405 x 405 x 214 mm (15.94x15.94x8.43 in)
2 hours test made with continuous pink noise signal within the range Fs-10Fs. Power calculated on rated minimum impedance. Loudspeaker in free air.
Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
Applied RMS Voltage is set to 2.83 V for 8 ohms Nominal Impedance.