← all drivers

18 Sound 18NLW9400

18" · 4 Ω · 1200 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size18"
Impedance4 Ω
Fs32 Hz
Qts0.22
Qes0.23
Qms6.1
Vas278 L
Sd1225 cm²
Xmax9.5 mm
Re2.6 Ω
Bl20.5 T·m
Mms185 g
Pe1200 W
Sensitivity98 dB

Alignment hint

EBP139 · ported
Sealed Vb (Qtc ≈ 0.71)≈ 29.8 L

EBP > 100: favours a ported (bass-reflex) 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 18NLW900032 =0.21 -0.01247 -3114 +4.597 -1close+
18 Sound 18NLW940033 +10.26 +0.04268 -109.5 =98 =close8 Ω vs 4 Ω: amp load changes+
Precision Devices PD185030 -20.21 -0.01249 -2916 +6.598 =close8 Ω vs 4 Ω: amp load changes · 800 W vs 1200 W: lower power handling+
Radian 2218Neo30 -20.23 +0.01312 +349 -0.599 +1close8 Ω vs 4 Ω: amp load changes · 800 W vs 1200 W: lower power handling · Xmax 9 mm < 9.5 mm: lower excursion-limited SPL+
RCF LF18N45131 -10.24 +0.02245 -339 -0.597.5 -0.5close8 Ω vs 4 Ω: amp load changes · Xmax 9 mm < 9.5 mm: lower excursion-limited SPL+
RCF LF18N40132 =0.26 +0.04257 -219 -0.598 =close8 Ω vs 4 Ω: amp load changes · Xmax 9 mm < 9.5 mm: lower excursion-limited SPL+
RCF LF 18N45131 -10.24 +0.02245 -338.8 -0.798.7 +0.7close8 Ω vs 4 Ω: amp load changes · Xmax 8.8 mm < 9.5 mm: lower excursion-limited SPL+
PD PD 185C00333 +10.224 =224 -548.8 -0.799.1 +1.1close8 Ω vs 4 Ω: amp load changes · Xmax 8.8 mm < 9.5 mm: lower excursion-limited SPL+
Precision Devices PD 185C00333 +10.224 =224 -548.8 -0.799.1 +1.1close8 Ω vs 4 Ω: amp load changes · Xmax 8.8 mm < 9.5 mm: lower excursion-limited SPL+
Oberton 18NSW70030.48 -1.520.243 +0.02309.02 +31.0214 +4.597.5 -0.5close8 Ω vs 4 Ω: amp load changes · 700 W vs 1200 W: lower power handling+

Compare the closest 3 against the 18NLW9400 →

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.