Eighteen Sound 12ND730

Eighteen Sound 12ND730
General Specifications Datasheet
Brand Eighteen Sound
Reference 12ND730
Size 12 in
300 mm
Type Low frequency
Impedance Z 8 Ω
Nominal Power P 400 W
Program Power Pmax 600 W
Sensitivity SPL 98 dB
Usable frequency range 53 - 5000 Hz
Recommended crossover 1300 Hz
  • 98 dB SPL 1W / 1m average sensitivity
  • 75 mm (3 in) Interleaved Sandwich Voice coil (ISV)
  • 600W program power handling
  • High force neodymium magnet assembly
  • Ideal for compact high loading enclosures
Eighteen Sound 12ND730 Frequency response
Eighteen Sound 12ND730 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 45 Hz
Surface area of cone Sd 531 cm²
DC resistance Re 5.6 Ω
Mechanical Q Qms 5.13
Electromagnetic Q Qes 0.24
Total Q factor Qts 0.23
Mechanical suspension compliance Cms 225 µm/N
Compliance equivalent air volume Vas 90 liters
Moving mass Mmd 47.9 g
Moving mass (including airload) Mms 55 g
Mechanical resistance Rms 3 N·s/m
BL product BL 19.2 T·m
Voice coil inductance Le 1.73 mH
Maximum linear excursion (one way) Xmax 6.5 mm
Maximum mechanical limit (one way) Xlim 15 mm
Efficiency η₀ 3.55 %
Efficiency bandwidth product EBP 187
Effective diaphragm diameter Ø 26 cm
Import this driver in a simulation software:
WinISD 18Sound 12ND730.wdr
Hornresp 18Sound 12ND730.txt
Basta! 18Sound 12ND730.bastaelement
Eighteen Sound 12ND730 Dimensions
Dimensions
Overall diameter 315 mm
Baffle hole diameter 282 mm
Overall depth 132.5 mm
Flange thickness 11.5 mm
Net weight 3.8 kg
Materials of construction
Diaphragm material Treated Paper
Diaphragm shape Curvilinear
Surround material Treated Polycotton
Voice Coil Parameters
Voice coil diameter 75 mm
Coil material Copper
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