Oberton 12B401

12" · 8 Ω · 400 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	46.63 Hz
Qts	0.245
Qes	0.25
Qms	13.93
Vas	69.6 L
Sd	514.7 cm²
Xmax	6.75 mm
Re	5.48 Ω
Bl	19.95 T·m
Mms	61.9 g
Pe	400 W
Sensitivity	97 dB

Alignment hint

EBP	187 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 9.5 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
LaVoce NBASS12-30	46 -0.63	0.26 +0.02	68.63 -0.97	6.6 -0.15	97.5 +0.5	close	Xmax 6.6 mm < 6.75 mm: lower excursion-limited SPL	+
Faital PRO 12FH510	45 -1.63	0.25 +0.01	75.2 +5.6	7.5 +0.75	97 =	close	4 Ω vs 8 Ω: amp load changes	+
RCF LF12P903	47 +0.37	0.23 -0.01	65 -4.6	7 +0.25	97.8 +0.8	close		+
Oberton 12B450	46.29 -0.34	0.235 -0.01	71.75 +2.15	7.75 +1	99 +2	close		+
Faital PRO 12FH530	45 -1.63	0.26 +0.02	74.1 +4.5	7.5 +0.75	98 +1	close		+
Monacor SP-12/500FH	45 -1.63	0.251 +0.01	76.2 +6.6	6.4 -0.35	98.2 +1.2	close	Xmax 6.4 mm < 6.75 mm: lower excursion-limited SPL	+
B&C 12NDL88	48 +1.37	0.24 -0.01	57 -12.6	8 +1.25	97 =	close	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 12FH520	50 +3.37	0.27 +0.03	65.5 -4.1	7 +0.25	97 =	close	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 12FH510	45 -1.63	0.24 -0.01	81.3 +11.7	7.5 +0.75	98 +1	close		+
Faital PRO 12FH500	45 -1.63	0.25 +0.01	87.3 +17.7	7.5 +0.75	97 =	close		+

Compare the closest 3 against the 12B401 →

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.