18 Sound 18NLW9000

18" · 8 Ω · 1800 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	34 Hz
Qts	0.31
Qes	0.32
Qms	7
Vas	206 L
Sd	1222 cm²
Xmax	14 mm
Re	5.5 Ω
Bl	28 T·m
Mms	218 g
Pe	1800 W
Sensitivity	97 dB

Alignment hint

EBP	106 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 49 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

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
Faital PRO 18XL1600	32 -2	0.31 =	201.1 -4.9	12.92 -1.08	98 +1	close	4 Ω vs 8 Ω: amp load changes · Xmax 12.92 mm < 14 mm: lower excursion-limited SPL	+
B&C 18SW115	32 -2	0.3 -0.01	187 -19	14 =	97 =	close		+
Oberton 18NXB1600	32.37 -1.63	0.303 -0.01	173.11 -32.89	13.5 -0.5	97 =	close	Xmax 13.5 mm < 14 mm: lower excursion-limited SPL	+
RCF LF18N405	30 -4	0.32 +0.01	227 +21	14 =	97 =	close		+
Fane IMPERIUM 18NDXL	33 -1	0.295 -0.02	203 -3	12 -2	95.7 -1.3	close	1200 W vs 1800 W: lower power handling · Xmax 12 mm < 14 mm: lower excursion-limited SPL	+
18 Sound 18LW2420	34 =	0.31 =	208 +2	10 -4	98 +1	close	4 Ω vs 8 Ω: amp load changes · 1300 W vs 1800 W: lower power handling · Xmax 10 mm < 14 mm: lower excursion-limited SPL	+
RCF LF18N408	30 -4	0.33 +0.02	193 -13	15 +1	97 =	close		+
18 Sound 18LW2600	31 -3	0.29 -0.02	187 -19	14.8 +0.8	96.8 -0.2	close		+
Faital PRO 18HW1070	32 -2	0.33 +0.02	191.5 -14.5	13 -1	96 -1	close	4 Ω vs 8 Ω: amp load changes · Xmax 13 mm < 14 mm: lower excursion-limited SPL	+
RCF LF18X451	30 -4	0.28 -0.03	220 +14	14 =	97 =	close		+

Compare the closest 3 against the 18NLW9000 →

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.