Eighteen Sound 15NCX750

Eighteen Sound 15NCX750
General Specifications Datasheet
Brand Eighteen Sound
Reference 15NCX750
Manufacturer website www.eighteensound.com
Size 15 in
380 mm
Type Coaxial
Impedance Z 8 Ω
Minimum impedance Zmin 6.3 Ω
Nominal Power P 400 W
Program Power Pmax 800 W
Sensitivity SPL 98 dB
Usable frequency range 55 - 18000 Hz
Recommended crossover 1400 Hz
Eighteen Sound 15NCX750 Directivity map
Eighteen Sound 15NCX750 Frequency response
Eighteen Sound 15NCX750 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 49 Hz
Surface area of cone Sd 881 cm²
DC resistance Re 5.4 Ω
Mechanical Q Qms 6.32
Electromagnetic Q Qes 0.40
Total Q factor Qts 0.37
Mechanical suspension compliance Cms 128 µm/N
Compliance equivalent air volume Vas 141 liters
Moving mass Mmd 65.92 g
Moving mass (including airload) Mms 81 g
Mechanical resistance Rms 3.95 N·s/m
BL product BL 18.4 T·m
Voice coil inductance Le 0.66 mH
Maximum linear excursion (one way) Xmax 5.5 mm
Maximum mechanical limit (one way) Xlim 13.5 mm
Efficiency η₀ 4.5 %
Efficiency bandwidth product EBP 122
Effective diaphragm diameter Ø 33.49 cm
Import this driver in a simulation software:
WinISD 18Sound 15NCX750.wdr
Hornresp 18Sound 15NCX750.txt
Basta! 18Sound 15NCX750.bastaelement
Eighteen Sound 15NCX750 Dimensions
Dimensions
Overall diameter 393.0 mm
Baffle hole diameter 354.0 mm
Overall depth 185 mm
Flange thickness 14 mm
Net weight 4.9 kg
Materials of construction
Diaphragm material Water Resistant Pulp
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 75 mm
Coil material Copper
Similar drivers Power
(W)
SPL
(dB)
Fs
(Hz)
Sd
(cm²)
Qms
Qes
Vas
(L)
Xmax
(mm)
Eighteen Sound 15NCX750 400 98 49 881 6.32 0.40 141 5.5
Eighteen Sound 15NCX750H 400 97 49 881 6.32 0.40 141 5.5
LaVoce NBASS15-30 400 98 42 855 5.00 0.40 140 6.6
Eighteen Sound 15CX1000 850 98 48 855 6.00 0.32 133 6.0
Eighteen Sound 15MB1000 850 98 48 855 6.00 0.32 133 6.0
LaVoce SSF153.00 400 97 45 880 5.20 0.44 117 6.7
Eminence KAPPA-15LFA 600 99 39 856 6.08 0.41 159 5.5
Eminence KAPPALITE 3015 450 101 45 856 6.70 0.36 153 5.9
LaVoce WSF152.50 250 98 45 880 5.10 0.56 137 4.7
Celestion TF1525e 300 97 50 868 7.12 0.53 128 3.5
LaVoce SSN153.00 400 98 51 880 8.10 0.49 91 6.7

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1480 ms