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18 Sound 18NLS4000

18" · 4 Ω · 1200 W · 88 dB · datasheet ↗

Thiele-Small parameters

Nominal size18"
Impedance4 Ω
Fs27 Hz
Qts0.35
Qes0.36
Qms13.7
Vas168 L
Sd1225 cm²
Xmax22.3 mm
Re2.9 Ω
Bl24.2 T·m
Mms433 g
Pe1200 W
Sensitivity88 dB

Alignment hint

EBP75 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 54.5 L

EBP 50-100: works in either a sealed or ported alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
18 Sound 18NTLW500032 +50.32 -0.03176 +817.5 -4.895 +7usable8 Ω vs 4 Ω: amp load changes · Xmax 17.5 mm < 22.3 mm: lower excursion-limited SPL+
Faital PRO 18XL180029 +20.4 +0.05215.5 +47.520.17 -2.1395 +7usable8 Ω vs 4 Ω: amp load changes · Xmax 20.17 mm < 22.3 mm: lower excursion-limited SPL+
18 Sound 18NTLW500032 +50.3 -0.05165 -317.5 -4.895 +7usableXmax 17.5 mm < 22.3 mm: lower excursion-limited SPL+
18 Sound 18NLW410031 +40.34 -0.01180 +1215 -7.396.5 +8.5usable8 Ω vs 4 Ω: amp load changes · Xmax 15 mm < 22.3 mm: lower excursion-limited SPL+
18 Sound 18TLW300032 +50.35 =185 +1712 -10.394 +6usableXmax 12 mm < 22.3 mm: lower excursion-limited SPL+
RCF LF18N40830 +30.33 -0.02193 +2515 -7.397 +9usable8 Ω vs 4 Ω: amp load changes · Xmax 15 mm < 22.3 mm: lower excursion-limited SPL+
Dayton Audio SS18-2221 -60.374 +0.02224 +5612.8 -9.590.6 +2.6usable8 Ω vs 4 Ω: amp load changes · Xmax 12.8 mm < 22.3 mm: lower excursion-limited SPL+
BMS 18N86225.1 -1.90.34 -0.01312 +14419 -3.395 +7usable8 Ω vs 4 Ω: amp load changes · Xmax 19 mm < 22.3 mm: lower excursion-limited SPL+
Eminence NSW4018-836 +90.38 +0.03164.49 -3.5115.21 -7.0996.6 +8.6usable8 Ω vs 4 Ω: amp load changes · Xmax 15.21 mm < 22.3 mm: lower excursion-limited SPL+
Faital PRO 18HW107032 +50.33 -0.02191.5 +23.513 -9.396 +8usableXmax 13 mm < 22.3 mm: lower excursion-limited SPL+

Compare the closest 3 against the 18NLS4000 →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.