Eighteen Sound 8NCX900

Eighteen Sound 8NCX900
Eighteen Sound 8NCX900
General Specifications
Brand Eighteen Sound
Reference 8NCX900
Size 8 in
210 mm
Type Coaxial
Impedance Z 8 Ω
Minimum impedance Zmin 6.8 Ω
Nominal Power P 300 W
Program Power Pmax 600 W
Sensitivity SPL 95 dB
Usable frequency range 100 - 23000 Hz
Recommended crossover 1300 Hz
  • 600W LF - 240W HF program power handling
  • Single motor dual magnet high output coaxial
  • 75mm (3 in) Edge-wound aluminum ribbon LF and HF voice coils (EWAL)
  • 96dB LF - 108,5dB HF sensitivity
  • Aluminum Demodulating Ring (SDR) for minimum LF distortion
  • HF copper ring for reduced distortion and increased output
  • Smooth on/off axis 80° response
  • Designed for premium quality point-source applications
Eighteen Sound 8NCX900 Frequency response
Eighteen Sound 8NCX900 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 130 Hz
Surface area of cone Sd 230 cm²
DC resistance Re 4.9 Ω
Mechanical Q Qms 8.00
Electromagnetic Q Qes 0.27
Total Q factor Qts 0.26
Mechanical suspension compliance Cms 53 µm/N
Compliance equivalent air volume Vas 4 liters
Moving mass Mmd 23 g
Moving mass (including airload) Mms 25 g
Mechanical resistance Rms 2.6 N·s/m
BL product BL 19 T·m
Voice coil inductance Le 0.6 mH
Maximum linear excursion (one way) Xmax 3.2 mm
Maximum mechanical limit (one way) Xlim 7.5 mm
Efficiency η₀ 3.2 %
Efficiency bandwidth product EBP 481
Effective diaphragm diameter Ø 17.1 cm
Import this driver in a simulation software:
WinISD 18Sound 8NCX900.wdr
Hornresp 18Sound 8NCX900.txt
Basta! 18Sound 8NCX900.bastaelement
Eighteen Sound 8NCX900 Dimensions
Dimensions
Overall diameter 225 mm
Baffle hole diameter 184 mm
Overall depth 127 mm
Flange thickness 11 mm
Net weight 4.5 kg
Materials of construction
Diaphragm material Titanium
Diaphragm shape Straight
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 75 mm
Coil material Copper Clad Aluminum
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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