Eighteen Sound 8M400

Eighteen Sound 8M400
Eighteen Sound 8M400
Eighteen Sound 8M400
General Specifications Datasheet
Brand Eighteen Sound
Reference 8M400
Size 8 in
200 mm
Type Low frequency
Impedance Z 8 Ω
Minimum impedance Zmin 6.5 Ω
Nominal Power P 250 W
Program Power Pmax 320 W
Sensitivity SPL 100.5 dB
Usable frequency range 120 - 6100 Hz
Recommended crossover 4000 Hz
  • 100,5 dB SPL 1W / 1m average sensitivity
  • 51 mm (2 in) Interleaved Sandwich Voice coil (ISV)
  • 250 Watt AES power handling
  • Improved heat dissipation via unique basket design
  • Copper ring to linearize impedance curve
  • Suitable for high quality midrange applications
Eighteen Sound 8M400 Frequency response
Eighteen Sound 8M400 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 90 Hz
Surface area of cone Sd 227 cm²
DC resistance Re 5.2 Ω
Mechanical Q Qms 6.20
Electromagnetic Q Qes 0.28
Total Q factor Qts 0.27
Mechanical suspension compliance Cms 222 µm/N
Compliance equivalent air volume Vas 16.2 liters
Moving mass Mmd 12 g
Moving mass (including airload) Mms 14 g
Mechanical resistance Rms 1.3 N·s/m
BL product BL 12.2 T·m
Voice coil inductance Le 0.95 mH
Maximum linear excursion (one way) Xmax 3 mm
Maximum mechanical limit (one way) Xlim 6.5 mm
Efficiency η₀ 4.07 %
Efficiency bandwidth product EBP 321
Effective diaphragm diameter Ø 17 cm
Import this driver in a simulation software:
WinISD 18Sound 8M400.wdr
Hornresp 18Sound 8M400.txt
Basta! 18Sound 8M400.bastaelement
Eighteen Sound 8M400 Dimensions
Dimensions
Overall diameter 210 mm
Baffle hole diameter 184 mm
Overall depth 105.5 mm
Flange thickness 14.5 mm
Net weight 4.5 kg
Materials of construction
Diaphragm material Paper
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 51 mm
Coil material Aluminum
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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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