18 Sound 18NLW4100

18" · 8 Ω · 1500 W · 96.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	31 Hz
Qts	0.34
Qes	0.35
Qms	11.2
Vas	180 L
Sd	1225 cm²
Xmax	15 mm
Re	4.9 Ω
Bl	29 T·m
Mms	307 g
Pe	1500 W
Sensitivity	96.5 dB

Alignment hint

EBP	89 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 54.1 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

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
RCF LF18N408	30 -1	0.33 -0.01	193 +13	15 =	97 +0.5	close		+
18 Sound 18NTLW5000	32 +1	0.32 -0.02	176 -4	17.5 +2.5	95 -1.5	close		+
Faital PRO 18HW1070	32 +1	0.33 -0.01	191.5 +11.5	13 -2	96 -0.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 13 mm < 15 mm: lower excursion-limited SPL	+
18 Sound 18LW2600	31 =	0.29 -0.05	187 +7	14.8 -0.2	96.8 +0.3	close	Xmax 14.8 mm < 15 mm: lower excursion-limited SPL	+
B&C 18SW115	32 +1	0.3 -0.04	187 +7	14 -1	97 +0.5	close	Xmax 14 mm < 15 mm: lower excursion-limited SPL	+
B&C 18TBW100	33 +2	0.32 -0.02	181.5 +1.5	12 -3	96 -0.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 12 mm < 15 mm: lower excursion-limited SPL	+
Oberton 18NXB1600	32.37 +1.37	0.303 -0.04	173.11 -6.89	13.5 -1.5	97 +0.5	close	Xmax 13.5 mm < 15 mm: lower excursion-limited SPL	+
18 Sound 18NLW4500	35 +4	0.33 -0.01	151 -29	15.3 +0.3	97 +0.5	close		+
18 Sound 18LW2600	30 -1	0.28 -0.06	186 +6	14 -1	96.5 =	close	4 Ω vs 8 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL	+
18 Sound 18TLW3000	32 +1	0.35 +0.01	185 +5	12 -3	94 -2.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 12 mm < 15 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 18NLW4100 →

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.