RCF LF18N408

18" · 8 Ω · 1500 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30 Hz
Qts	0.33
Qes	0.36
Qms	3.6
Vas	193 L
Sd	1220 cm²
Xmax	15 mm
Re	4.3 Ω
Bl	25.7 T·m
Mms	284 g
Pe	1500 W
Sensitivity	97 dB

Alignment hint

EBP	83 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 53.7 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
18 Sound 18NLW4100	31 +1	0.34 +0.01	180 -13	15 =	96.5 -0.5	close		+
Faital PRO 18HW1070	32 +2	0.33 =	191.5 -1.5	13 -2	96 -1	close	4 Ω vs 8 Ω: amp load changes · Xmax 13 mm < 15 mm: lower excursion-limited SPL	+
RCF LF18N405	30 =	0.32 -0.01	227 +34	14 -1	97 =	close	Xmax 14 mm < 15 mm: lower excursion-limited SPL	+
18 Sound 18LW2600	31 +1	0.29 -0.04	187 -6	14.8 -0.2	96.8 -0.2	close	Xmax 14.8 mm < 15 mm: lower excursion-limited SPL	+
B&C 18SW115	32 +2	0.3 -0.03	187 -6	14 -1	97 =	close	Xmax 14 mm < 15 mm: lower excursion-limited SPL	+
18 Sound 18NTLW5000	32 +2	0.32 -0.01	176 -17	17.5 +2.5	95 -2	close		+
18 Sound 18LW2600	30 =	0.28 -0.05	186 -7	14 -1	96.5 -0.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 14 mm < 15 mm: lower excursion-limited SPL	+
18 Sound 18NLW9000	34 +4	0.31 -0.02	206 +13	14 -1	97 =	close	Xmax 14 mm < 15 mm: lower excursion-limited SPL	+
RCF LF 18N408	30 =	0.327 =	193 =	9.8 -5.2	96.3 -0.7	close	Xmax 9.8 mm < 15 mm: lower excursion-limited SPL	+
Faital PRO 18XL1600	32 +2	0.31 -0.02	201.1 +8.1	12.92 -2.08	98 +1	close	4 Ω vs 8 Ω: amp load changes · Xmax 12.92 mm < 15 mm: lower excursion-limited SPL	+

Compare the closest 3 against the LF18N408 →

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.