Beyma SM112 vp

12" · 8 Ω · 250 W · 97.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	57.8 Hz
Qts	0.391
Qes	0.412
Qms	7.65
Vas	64.6 L
Sd	550 cm²
Xmax	4.2 mm
Re	6.41 Ω
Bl	16.8 T·m
Mms	49.8 g
Pe	250 W
Sensitivity	97.7 dB

Alignment hint

EBP	140 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 28.5 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
Faital PRO 12PR310-8	54 -3.8	0.396 +0.01	62.8 -1.8	4.9 +0.7	97.5 -0.2	close		+
Fane COLOSSUS 12MBN	55 -2.8	0.396 +0.01	63 -1.6	5.5 +1.3	97.4 -0.3	close		+
Faital PRO 12HX500	54 -3.8	0.396 +0.01	62.3 -2.3	5.5 +1.3	97.2 -0.5	close		+
Fertin Acoustics LB 31 SONO	59.5 +1.7	0.407 +0.02	70 +5.4	4 -0.2	97.5 -0.2	close	Xmax 4 mm < 4.2 mm: lower excursion-limited SPL	+
RCF L 12/568H	58 +0.2	0.409 +0.02	72 +7.4	4 -0.2	98.1 +0.4	close	Xmax 4 mm < 4.2 mm: lower excursion-limited SPL	+
LaVoce WSN122.50-16	53 -4.8	0.4 +0.01	65.84 +1.24	4.6 +0.4	96.5 -1.2	close	16 Ω vs 8 Ω: amp load changes	+
RCF L12/568H	58.8 +1	0.41 +0.02	72 +7.4	4 -0.2	97.1 -0.6	close	100 W vs 250 W: lower power handling · Xmax 4 mm < 4.2 mm: lower excursion-limited SPL	+
Faital PRO 12PR300-4	50 -7.8	0.392 =	63.1 -1.5	4.9 +0.7	98.8 +1.1	close	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 12PR300-8	54 -3.8	0.382 -0.01	73.5 +8.9	4.9 +0.7	98.2 +0.5	close		+
Beyma 12MC500	57 -0.8	0.373 -0.02	54.9 -9.7	5.5 +1.3	97.8 +0.1	close		+

Compare the closest 3 against the SM112 vp →

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.