Eighteen Sound 15NMB420

Eighteen Sound 15NMB420
General Specifications Datasheet
Brand Eighteen Sound
Reference 15NMB420
Manufacturer website www.eighteensound.com
Size 15 in
380 mm
Type Low Frequency
Impedance Z 8 Ω
Nominal Power P 450 W
Program Power Pmax 700 W
Sensitivity SPL 99 dB
Usable frequency range 40 - 5000 Hz
Recommended crossover 1700 Hz
Eighteen Sound 15NMB420 Frequency response
Eighteen Sound 15NMB420 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 42 Hz
Surface area of cone Sd 900 cm²
DC resistance Re 5.6 Ω
Mechanical Q Qms 6.00
Electromagnetic Q Qes 0.30
Total Q factor Qts 0.29
Mechanical suspension compliance Cms 196 µm/N
Compliance equivalent air volume Vas 225 liters
Moving mass Mmd 57.43 g
Moving mass (including airload) Mms 73 g
Mechanical resistance Rms 3.21 N·s/m
BL product BL 19 T·m
Voice coil inductance Le 0.8 mH
Maximum linear excursion (one way) Xmax 6.5 mm
Maximum mechanical limit (one way) Xlim 18 mm
Efficiency η₀ 5.37 %
Efficiency bandwidth product EBP 140
Effective diaphragm diameter Ø 33.85 cm
Import this driver in a simulation software:
WinISD 18Sound 15NMB420.wdr
Hornresp 18Sound 15NMB420.txt
Basta! 18Sound 15NMB420.bastaelement
Eighteen Sound 15NMB420 Dimensions
Dimensions
Overall diameter 387.0 mm
Baffle hole diameter 357.0 mm
Overall depth 169.5 mm
Flange thickness 11.5 mm
Net weight 3.9 kg
Materials of construction
Diaphragm material Treated Paper
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 75 mm
Coil material Aluminum
Similar drivers Power
(W)
SPL
(dB)
Fs
(Hz)
Sd
(cm²)
Qms
Qes
Vas
(L)
Xmax
(mm)
Eighteen Sound 15NMB420 450 99 42 900 6.00 0.30 225 6.5
Beyma 15XA38Nd 350 99 38 880 6.40 0.31 238 6.0
Fane FC-153F01 400 100 40 855 6.55 0.32 220 7.5
B&C Speaker 15CXN76 400 99 38 855 5.80 0.30 246 4.5
B&C Speaker 15HCX76 400 99 38 855 5.80 0.30 246 4.5
Fane SOVEREIGN 15-600LF 600 99 37 855 6.28 0.41 236 6.5
B&C Speaker 15PLB76 400 100 42 855 5.90 0.26 164 5.0
Precision Devices PD.153C001 400 100 38 899 6.20 0.23 196 7.7
Eighteen Sound 15W700 450 99 38 850 3.80 0.33 217 6.5
B&C Speaker 15FHX76 400 98 40 855 5.20 0.47 186 6.5
Fane SOVEREIGN 15-400 400 99 37 855 6.50 0.32 210 5.0

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