B&C 12MH32

12" · 8 Ω · 400 W · 101 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	53 Hz
Qts	0.19
Qes	0.2
Qms	7.2
Vas	63 L
Sd	522 cm²
Xmax	5 mm
Re	5.2 Ω
Bl	22.3 T·m
Mms	54 g
Pe	400 W
Sensitivity	101 dB

Alignment hint

EBP	265 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 4.9 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
RCF MB 12N351	55 +2	0.201 +0.01	61 -2	4.7 -0.3	100.4 -0.6	close	Xmax 4.7 mm < 5 mm: lower excursion-limited SPL	+
B&C 12NDL76	50 -3	0.19 =	70 +7	6 +1	100 -1	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 12P80FE V2	50 -3	0.201 +0.01	66.8 +3.8	5.2 +0.2	99.9 -1.1	close		+
18 Sound 12ND940	49 -4	0.2 +0.01	64.8 +1.8	7.6 +2.6	100 -1	close		+
B&C 12 MH 32	52 -1	0.194 =	71 +8	4.1 -0.9	100.7 -0.3	close	Xmax 4.1 mm < 5 mm: lower excursion-limited SPL	+
RCF MB 12N405	52 -1	0.203 +0.01	53 -10	5.7 +0.7	99.5 -1.5	close		+
B&C 12NDL76	50 -3	0.2 +0.01	73 +10	7 +2	100 -1	close		+
Beyma 12P80ND V2	50 -3	0.163 -0.03	65 +2	4.5 -0.5	100.7 -0.3	close	Xmax 4.5 mm < 5 mm: lower excursion-limited SPL	+
Precision Devices PD121	59 +6	0.201 +0.01	54 -9	5 =	100 -1	close	16 Ω vs 8 Ω: amp load changes · 300 W vs 400 W: lower power handling	+
18 Sound 12NMB1000	54 +1	0.19 =	58 -5	3.5 -1.5	102 +1	close	Xmax 3.5 mm < 5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12MH32 →

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.