Eighteen Sound 12NCX750

Eighteen Sound 12NCX750
General Specifications Datasheet
Brand Eighteen Sound
Reference 12NCX750
Size 12 in
300 mm
Type Coaxial
Impedance Z 8 Ω
Minimum impedance Zmin 6.4 Ω
Nominal Power P 400 W
Program Power Pmax 800 W
Sensitivity SPL 97 dB
Usable frequency range 60 - 18000 Hz
Recommended crossover 1800 Hz
  • 97dB LF / 107dB HF SPL 1W/1m average sensitivity
  • Single magnet neodymium motor
  • 800W LF - 240W HF maximum program power handling
  • 75 mm (3") LF Interleaved Sandwich 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 monitor
Eighteen Sound 12NCX750 Frequency response
Eighteen Sound 12NCX750 Impedance
Eighteen Sound 12NCX750 Directivity map
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 58 Hz
Surface area of cone Sd 531 cm²
DC resistance Re 5.4 Ω
Mechanical Q Qms 6.42
Electromagnetic Q Qes 0.31
Total Q factor Qts 0.29
Mechanical suspension compliance Cms 158 µm/N
Compliance equivalent air volume Vas 63 liters
Moving mass Mmd 40.9 g
Moving mass (including airload) Mms 48 g
Mechanical resistance Rms 2.7 N·s/m
BL product BL 17.5 T·m
Voice coil inductance Le 0.62 mH
Maximum linear excursion (one way) Xmax 5.5 mm
Maximum mechanical limit (one way) Xlim 13.5 mm
Efficiency η₀ 4.8 %
Efficiency bandwidth product EBP 187
Effective diaphragm diameter Ø 26 cm
Import this driver in a simulation software:
WinISD 18Sound 12NCX750.wdr
Hornresp 18Sound 12NCX750.txt
Basta! 18Sound 12NCX750.bastaelement
Eighteen Sound 12NCX750 Dimensions
Dimensions
Overall diameter 310 mm
Baffle hole diameter 280 mm
Overall depth 148 mm
Flange thickness 14 mm
Net weight 4.5 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
Magnet Parameters
Magnet material Neodymium
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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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