The 15ND830 is a high power, high output, low frequency woofer meeting the most stringent requirements in high quality professional transducers. Thanks to its versatility, the 15ND830 can be used in 2-way compact reflex enclosures and reflex / band pass subwoofers. 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 heat sink and basket, together with the magnetic structure, represents 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 fully water repellent and also gives a significant degree of rigidity to the cone. The 75mm Interleaved Sandwich Voice coil (ISV) assembly is wound on a strong fiberglas former which improves force transmission and thermal power handling. A special coating applied to both the top and back plates makes the 15ND830 far more resistant to the corrosive effects of salts and oxidization.
Mounting and Shipping Info
Nominal Diameter380 mm ( in)
Nominal Impedance4 Ω
Minimum Impedance3.6 Ω
Nominal Power Handling1450 W
Continuous Power Handling2700 W
Frequency Range42 - 4500 Hz
Voice Coil Diameter75 mm (2.95 in)
Woofer Cone TreatmentWeather protected
Recommended Enclosure110.0 dm3 (3.88 ft3)
Recommended Tuning45 Hz
Resonance Frequency42 Hz
Vas157.0 dm3 (5.54 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 Weight4.1 kg (9.04 lb)
Shipping Weight5.6 kg (12.35 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 nominal 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.