Eighteen Sound 15NCX750

Eighteen Sound 15NCX750
General Specifications Datasheet
Brand Eighteen Sound
Reference 15NCX750
Size 15 in
380 mm
Type Coaxial
Impedance Z 8 Ω
Minimum impedance Zmin 6.3 Ω
Nominal Power P 400 W
Program Power Pmax 800 W
Sensitivity SPL 98 dB
Usable frequency range 55 - 18000 Hz
Recommended crossover 1400 Hz
  • 98 dB LF / 107 dB HF SPL 1W/1m average sensitivity
  • 800W LF - 240W HF maximum program power handling
  • Single magnet neodymium motor
  • 75 mm (3") Interleaved Sandwich LF Voice coil (ISV)
  • Aluminum Demodulating Ring (SDR) for minimum LF distortion
  • 60 mm (2.4") HF Titanium diaphragm
  • Edge-wound Aluminum ribbon HF voice coil (EWAL)
  • HF copper sleeve for reduced distortion and higher output
  • 80 degrees nominal conical dispersion
  • Suitable for very compact enclosures and stage monitors
Eighteen Sound 15NCX750 Frequency response
Eighteen Sound 15NCX750 Impedance
Eighteen Sound 15NCX750 Directivity map
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 49 Hz
Surface area of cone Sd 881 cm²
DC resistance Re 5.4 Ω
Mechanical Q Qms 6.32
Electromagnetic Q Qes 0.40
Total Q factor Qts 0.37
Mechanical suspension compliance Cms 128 µm/N
Compliance equivalent air volume Vas 141 liters
Moving mass Mmd 65.9 g
Moving mass (including airload) Mms 81 g
Mechanical resistance Rms 3.9 N·s/m
BL product BL 18.4 T·m
Voice coil inductance Le 0.66 mH
Maximum linear excursion (one way) Xmax 5.5 mm
Maximum mechanical limit (one way) Xlim 13.5 mm
Efficiency η₀ 4.5 %
Efficiency bandwidth product EBP 122
Effective diaphragm diameter Ø 33.5 cm
Import this driver in a simulation software:
WinISD 18Sound 15NCX750.wdr
Hornresp 18Sound 15NCX750.txt
Basta! 18Sound 15NCX750.bastaelement
Eighteen Sound 15NCX750 Dimensions
Dimensions
Overall diameter 393 mm
Baffle hole diameter 354 mm
Overall depth 185 mm
Flange thickness 14 mm
Net weight 4.9 kg
Materials of construction
Diaphragm material Water Resistant Pulp
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 75 mm
Coil material Copper
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This page may contain errors or inaccuracies. Please check the up-to-date specifications on the manufacturer website before starting your project.

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