RCF LF 18N408

18" · 8 Ω · 1500 W · 96.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30 Hz
Qts	0.327
Qes	0.36
Qms	3.6
Vas	193 L
Sd	1220 cm²
Xmax	9.8 mm
Re	4.3 Ω
Bl	26.2 T·m
Mms	304.3 g
Pe	1500 W
Sensitivity	96.3 dB

Alignment hint

EBP	83 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 52.5 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

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
RCF LF18N408	30 =	0.33 =	193 =	15 +5.2	97 +0.7	close		+
Faital PRO 18HW1070	32 +2	0.33 =	191.5 -1.5	13 +3.2	96 -0.3	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 18SW1600ND	32 +2	0.33 =	205.7 +12.7	10 +0.2	96.6 +0.3	close		+
RCF LF 18N405	30 =	0.324 =	227 +34	10.8 +1	96.7 +0.4	close		+
B&C 18 SW 115	32 +2	0.303 -0.02	187 -6	9.8 =	96.6 +0.3	close		+
18 Sound 18NLW4100	31 +1	0.34 +0.01	180 -13	15 +5.2	96.5 +0.2	close		+
B&C 18TBW100	33 +3	0.32 -0.01	181.5 -11.5	12 +2.2	96 -0.3	close	4 Ω vs 8 Ω: amp load changes	+
RCF LF18N405	30 =	0.32 -0.01	227 +34	14 +4.2	97 +0.7	close		+
Focal 46 KX 4	29.4 -0.6	0.345 +0.02	206.3 +13.3	8 -1.8	96.3 =	close	1000 W vs 1500 W: lower power handling · Xmax 8 mm < 9.8 mm: lower excursion-limited SPL	+
Ciare NDH18_4S	31 +1	0.319 -0.01	239 +46	9.4 -0.4	96.5 +0.2	close	1000 W vs 1500 W: lower power handling · Xmax 9.4 mm < 9.8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the LF 18N408 →

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.