Beyma SM112/N v2021

12" · 8 Ω · 400 W · 96.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	40 Hz
Qts	0.298
Qes	0.31
Qms	8
Vas	117 L
Sd	550 cm²
Xmax	7 mm
Re	6.2 Ω
Bl	17 T·m
Mms	57.4 g
Pe	400 W
Sensitivity	96.9 dB

Alignment hint

EBP	129 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 25.3 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
Beyma SM112-N2	40 =	0.298 =	117.3 +0.3	5.9 -1.1	96.9 =	close	250 W vs 400 W: lower power handling · Xmax 5.9 mm < 7 mm: lower excursion-limited SPL	+
Beyma 12LW30/N	38 -2	0.287 -0.01	109 -8	7 =	96.2 -0.7	close		+
McCauley B1240	38 -2	0.286 -0.01	110 -7	6.5 -0.5	96.3 -0.6	close	Xmax 6.5 mm < 7 mm: lower excursion-limited SPL	+
Eminence KAPPALITE 3012 LF-4	36.4 -3.6	0.308 +0.01	107.4 -9.6	8.1 +1.1	97.2 +0.3	close	4 Ω vs 8 Ω: amp load changes	+
PHL Audio 4510	42 +2	0.307 +0.01	108 -9	6 -1	97.3 +0.4	close	300 W vs 400 W: lower power handling · Xmax 6 mm < 7 mm: lower excursion-limited SPL	+
Magnat 300	31 -9	0.3 =	120 +3	7.1 +0.1	96.5 -0.4	close	4 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling	+
PHL Audio 4530	37 -3	0.314 +0.02	124 +7	6 -1	96.3 -0.6	close	300 W vs 400 W: lower power handling · Xmax 6 mm < 7 mm: lower excursion-limited SPL	+
Beyma SM112/N	38 -2	0.27 -0.03	138 +21	7.3 +0.3	97.2 +0.3	close		+
Fane SOVEREIGN PRO 12-500	43 +3	0.314 +0.02	107 -10	6 -1	97.4 +0.5	close	Xmax 6 mm < 7 mm: lower excursion-limited SPL	+
Dayton Audio APOLLO 12N	38 -2	0.261 -0.04	128.1 +11.1	6.8 -0.2	96.4 -0.5	close	Xmax 6.8 mm < 7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SM112/N v2021 →

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.