Beyma SM112/N vp1

12" · 8 Ω · 400 W · 92.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	37 Hz
Qts	0.433
Qes	0.494
Qms	3.524
Vas	90 L
Sd	550 cm²
Xmax	7.3 mm
Re	6.2 Ω
Bl	15.9 T·m
Mms	87.2 g
Pe	400 W
Sensitivity	92.7 dB

Alignment hint

EBP	75 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 54 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
SICA SAMPLE 7161	35.2 -1.8	0.437 =	79.6 -10.4	8 +0.7	91.7 -1	close		+
Ciare HSB322-22	35 -2	0.42 -0.01	83 -7	7.5 +0.2	95 +2.3	close	4 Ω vs 8 Ω: amp load changes	+
Beyma SM112/N v2012	43 +6	0.434 =	94 +4	7.3 =	95.3 +2.6	close		+
McCauley 6232	35 -2	0.411 -0.02	106.2 +16.2	8.4 +1.1	93.6 +0.9	close		+
Magnat POWER BULL 300	33 -4	0.479 +0.05	82 -8	8.1 +0.8	93 +0.3	close	4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling	+
GRS 12PT-8	35 -2	0.387 -0.05	112 +22	7.8 +0.5	93 +0.3	close		+
RCF W 300	39.5 +2.5	0.391 -0.04	90 =	6.9 -0.4	96.4 +3.7	close	4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling · Xmax 6.9 mm < 7.3 mm: lower excursion-limited SPL	+
Kartesian WOM300_vDIY	37 =	0.362 -0.07	91.7 +1.7	6.4 -0.9	94.6 +1.9	close	250 W vs 400 W: lower power handling · Xmax 6.4 mm < 7.3 mm: lower excursion-limited SPL	+
MCM Electronics 55-2982	36.2 -0.8	0.407 -0.03	121.7 +31.7	7 -0.3	93.9 +1.2	usable	Xmax 7 mm < 7.3 mm: lower excursion-limited SPL	+
Sica 12 SR 3 CP	37 =	0.4 -0.03	60.9 -29.1	8 +0.7	92.2 -0.5	usable		+

Compare the closest 3 against the SM112/N vp1 →

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.