RCF LF 18N402

18" · 8 Ω · 1000 W · 100.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	36 Hz
Qts	0.241
Qes	0.25
Qms	7.1
Vas	247 L
Sd	1220 cm²
Xmax	7.1 mm
Re	5.6 Ω
Bl	28.9 T·m
Mms	165.1 g
Pe	1000 W
Sensitivity	100.2 dB

Alignment hint

EBP	144 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 32.5 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
18 Sound 18W1000	35 -1	0.232 -0.01	268 +21	7 -0.1	100.2 =	close	Xmax 7 mm < 7.1 mm: lower excursion-limited SPL	+
18 Sound 18W2001	37 +1	0.25 +0.01	230 -17	7 -0.1	99 -1.2	close	Xmax 7 mm < 7.1 mm: lower excursion-limited SPL	+
18 Sound 18W1001	35 -1	0.23 -0.01	268 +21	7 -0.1	99 -1.2	close	Xmax 7 mm < 7.1 mm: lower excursion-limited SPL	+
RCF LF 18N451	31 -5	0.24 =	245 -2	8.8 +1.7	98.7 -1.5	close		+
18 Sound 18LW1250	35 -1	0.271 +0.03	268 +21	8.7 +1.6	100.2 =	close		+
Oberton 18B500	34.9 -1.1	0.276 +0.04	243.9 -3.1	6.7 -0.4	99.6 -0.6	close	600 W vs 1000 W: lower power handling · Xmax 6.7 mm < 7.1 mm: lower excursion-limited SPL	+
RCF LF18N451	31 -5	0.24 =	245 -2	9 +1.9	97.5 -2.7	close		+
Oberton 18FBR700	35.56 -0.44	0.271 +0.03	231.3 -15.7	8 +0.9	98 -2.2	close	700 W vs 1000 W: lower power handling	+
RCF LF 18N401	32 -4	0.259 +0.02	257 +10	8.8 +1.7	98.9 -1.3	close		+
Mercuriale PAR 465 M0	35 -1	0.265 +0.02	251 +4	6 -1.1	98.5 -1.7	close	600 W vs 1000 W: lower power handling · Xmax 6 mm < 7.1 mm: lower excursion-limited SPL	+

Compare the closest 3 against the LF 18N402 →

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.