Beyma SM118/N vp PP

18" · 4 Ω · 400 W · 97.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	36 Hz
Qts	0.492
Qes	0.53
Qms	6.83
Vas	150 L
Sd	1150 cm²
Xmax	5.4 mm
Re	3.2 Ω
Bl	18.2 T·m
Mms	241.6 g
Pe	400 W
Sensitivity	97.2 dB

Alignment hint

EBP	68 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 140.8 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
LaVoce SAF184.04	37 +1	0.474 -0.02	143 -7	9.3 +3.9	95.2 -2	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 18FH1042	38 +2	0.413 -0.08	150 =	5.6 +0.2	96.4 -0.8	close	8 Ω vs 4 Ω: amp load changes	+
LaVoce SAF184.02	38 +2	0.422 -0.07	150 =	8.1 +2.7	96.9 -0.3	close	8 Ω vs 4 Ω: amp load changes	+
SB Audience ROSSO-18SW1000D	35 -1	0.467 -0.02	164.3 +14.3	8.2 +2.8	95.3 -1.9	close	8 Ω vs 4 Ω: amp load changes	+
Sica 18 PF 4	38 +2	0.43 -0.06	147.3 -2.7	8 +2.6	96.3 -0.9	close	8 Ω vs 4 Ω: amp load changes	+
LaVoce SAN184.02	38 +2	0.406 -0.09	150 =	7.9 +2.5	96.8 -0.4	close	8 Ω vs 4 Ω: amp load changes	+
P.Audio BM-18LF	39.8 +3.8	0.432 -0.06	169.9 +19.9	5.8 +0.4	97.7 +0.5	close	8 Ω vs 4 Ω: amp load changes	+
LaVoce SAN184.03	36 =	0.417 -0.08	160 +10	9.4 +4	95.9 -1.3	close	8 Ω vs 4 Ω: amp load changes	+
Selenium 18SW2P	36 =	0.419 -0.07	179 +29	6.5 +1.1	96.4 -0.8	close	8 Ω vs 4 Ω: amp load changes	+
DAS Audio 18SX	39.2 +3.2	0.443 -0.05	171.9 +21.9	8 +2.6	96.4 -0.8	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the SM118/N vp PP →

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.