Eighteen Sound 6NMB420

Eighteen Sound 6NMB420
General Specifications Datasheet
Brand Eighteen Sound
Reference 6NMB420
Size 6 in
152 mm
Type Low frequency
Impedance Z 8 Ω
Minimum impedance Zmin 6.2 Ω
Nominal Power P 200 W
Program Power Pmax 260 W
Sensitivity SPL 100 dB
Usable frequency range 200 - 7000 Hz
Recommended crossover 3500 Hz
  • 100 dB SPL 1W / 1m average sensitivity
  • 44 mm (1 3/4 in) voice coil
  • 200 W AES power handling
  • External neodymium magnet assembly
  • Single Demodulating Ring (SDR) for lower distortion
  • Weather protected cone and plates for outdoor usage
  • Improved heat dissipation via Active Cooling System
  • Specially designed for line arrays and compact two way systems
Eighteen Sound 6NMB420 Frequency response
Eighteen Sound 6NMB420 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 110 Hz
Surface area of cone Sd 130 cm²
DC resistance Re 5.3 Ω
Mechanical Q Qms 2.70
Electromagnetic Q Qes 0.38
Total Q factor Qts 0.33
Mechanical suspension compliance Cms 255 µm/N
Compliance equivalent air volume Vas 6.1 liters
Moving mass Mmd 7.6 g
Moving mass (including airload) Mms 8.5 g
Mechanical resistance Rms 2.2 N·s/m
BL product BL 9 T·m
Voice coil inductance Le 0.1 mH
Maximum linear excursion (one way) Xmax 3 mm
Maximum mechanical limit (one way) Xlim 7 mm
Efficiency η₀ 2.04 %
Efficiency bandwidth product EBP 289
Effective diaphragm diameter Ø 12.9 cm
Import this driver in a simulation software:
WinISD 18Sound 6NMB420.wdr
Hornresp 18Sound 6NMB420.txt
Basta! 18Sound 6NMB420.bastaelement
Eighteen Sound 6NMB420 Dimensions
Dimensions
Overall diameter 162 mm
Baffle hole diameter 148 mm
Overall depth 73 mm
Flange thickness 11.5 mm
Net weight 1.25 kg
Materials of construction
Diaphragm material Paper
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 44 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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