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  • 97 dB LF / 109 dB HF SPL 1W/1m average sensitivity
  • Single magnet neodymium motor
  • 800W LF - 140W HF program power handling
  • 75 mm (3”) Interleaved Sandwich LF Voice coil (ISV)
  • Aluminum Demodulating Ring (SDR) for minimum LF distortion
  • 60 mm (2.4”) HF pure Titanium diaphragm
  • Edge-wound Aluminum ribbon HF voice coil (EWAL)
  • HF copper sleeve for reduced distortion and higher output
  • Smooth on/off axis 70° x 50° response
  • Suitable for compact enclosures and stage monitors

The 15NCX750H is a 15" neodymium coaxial transducer designed for use in compact reflex enclosures and stage monitors as small as 40lt with a nominal dispersion of 70 X 50 degrees.

The curvilinear profile LF cone provides smooth response within its intended frequency range thanks to its high damping pulp composition. The 75mm (3in) LF copper voice coil employs Interleaved Sandwich Voice coil (ISV) technology, in which a high strength former carries windings on both the outer and inner surfaces. This results in a balanced coil with a uniform distribution of mass and motive energy and an extremely linear motor assembly. The low distortion and sound quality are further improved by an aluminum demodulating ring (SDR technology) that flatten LF impedance and phase with constant power transfer.

Equipped with a proprietary hybrid radial tangerine phase plug, the integrated HF compression driver has been designed to give a smooth, coherent wavefront at the horn entrance in all working frequency ranges with an high level of manufacturing consistency. The phase plug, with its short openings and high flare rate value, assures low distortion and remarkable improvements in mid-high frequency reproduction. A copper sleeve reduces inductance value above 10kHz, improving phase and impedance linearization.

The 2.4" diameter HF diaphragm assembly uses a high strength, high temperature treated Nomex voice coil former joined directly to the titanium diaphragm on its upper bend edge, assuring extended frequency energy transfer. This improves linearity and shows unparalleled reliability when compared with a straight former joint. A specific HF exit profile design has been chosen in order to maximize the cone’s profile coupling.

The high force neodymium single magnet structure makes the 15NCX750H a lightweight speaker for its performance class - only 5.1kg (11.25 lb).

The XO15NCX dedicated passive crossover filter is provided, making this neo coaxial speaker a ready-to-use transducer system.

Due to the widespread use of high power audio systems at outdoor events, the ability to perform in adverse weather conditions is an additional key feature of the 15NCX750H. This has been achieved using exclusive cone and magnet plate treatment processes which increase resistance against corrosion and make the cone water repellent.


Specifications LF unit

Specifications HF unit


Mounting and Shipping Info

  • Nominal Diameter380 mm (14.96 in)
  • Nominal Impedance8 Ω
  • Minimum Impedance LF6.3 Ω
  • Frequency Range50 - 4700 Hz
  • Dispersion Angle170x50 °
  • Woofer Cone TreatmentWater repellent
  • Magnet MaterialNeodymium
  • LF Sensitivity297.0 dB
  • LF Nominal Power Handling3400 W
  • LF Continuous Power Handling4800 W
  • LF Voice Coil Diameter75 mm (3.0 in)
  • LF Winding Material- Copper -
  • HF Sensitivity5109.0 dB
  • HF Nominal Power Handling670 W
  • HF Continuous Power Handling7140 W
  • HF Voice Coil Diameter64 mm (2.5 in)
  • HF Winding MaterialEdge wound Aluminum
  • Recommended Crossover81.2 kHz
  • Resonance Frequency49 Hz
  • Re5.4 Ω
  • Qes0.4
  • Qms6.32
  • Qts0.37
  • Vas141.0 dm3 (4.98 ft3)
  • Sd881.0 cm2 (136.56 in2)
  • η₀4.1 %
  • Xmax5.5 mm
  • Mms80.6 g
  • Bl18.5 Txm
  • Le0.66 mH
  • EBP122 Hz
  • Overall Diameter393 mm (15.47 in)
  • Bolt Circle Diameter371 mm (14.61 in)
  • Baffle Cutout Diameter360 mm (14.17 in)
  • Depth185 mm (7.28 in)
  • Flange and Gasket Thickness14 mm (0.55 in)
  • Net Weight5.3 kg (11.68 lb)
  • Shipping Weight6.0 kg (13.23 lb)
  • Shipping Box405 x 405 x 260 mm (15.94x15.94x10.24 in)
  • Included by –6 dB down points.
  • Applied RMS Voltage is set to 2.83V.
  • 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 2.83V.
  • 2 hour test made with continuous pink noise signal within the range from the recommended crossover frequency to 20 kHz. Power calculated on rated nominal impedance. Loudspeaker in free air.
  • Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
  • 12 dB/oct. or higher slope high-pass filter.
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