Beyma SM118/N v2015

18" · 8 Ω · 400 W · 96.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	42 Hz
Qts	0.581
Qes	0.65
Qms	5.5
Vas	206 L
Sd	1150 cm²
Xmax	5.5 mm
Re	6.3 Ω
Bl	18.2 T·m
Mms	129.2 g
Pe	400 W
Sensitivity	96.7 dB

Alignment hint

EBP	65 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 428.1 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
Fane FC-185F01	36 -6	0.533 -0.05	205 -1	10.5 +5	95.6 -1.1	close		+
Peavey 1801-8 LT BW	40.2 -1.8	0.61 +0.03	284.9 +78.9	5 -0.5	96.5 -0.2	usable	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
DAS Audio 18LXN	38.5 -3.5	0.45 -0.13	213.7 +7.7	8 +2.5	97.2 +0.5	usable		+
the box Speaker 18-500/8-A	40.1 -1.9	0.425 -0.16	208.3 +2.3	5.4 -0.1	98.4 +1.7	usable	Xmax 5.4 mm < 5.5 mm: lower excursion-limited SPL	+
Wharfedale D592	35 -7	0.547 -0.03	251 +45	6 +0.5	94.6 -2.1	usable	16 Ω vs 8 Ω: amp load changes	+
Elder Audio 18LB100-8A	40 -2	0.425 -0.16	208 +2	6.4 +0.9	98.3 +1.6	usable		+
Peavey 1801-8 v1993	40.2 -1.8	0.586 +0.01	321 +115	5 -0.5	98.1 +1.4	usable	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
P.Audio P180/2242	37 -5	0.48 -0.1	231.72 +25.72	7 +1.5	95.5 -1.2	usable		+
Monacor SP-46A/500BS	36 -6	0.485 -0.1	250 +44	6 +0.5	96.6 -0.1	usable		+
MC Kenzie C18.500BS	37 -5	0.484 -0.1	252 +46	6.5 +1	96.4 -0.3	usable		+

Compare the closest 3 against the SM118/N v2015 →

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.