Oberton 12B400

12" · 8 Ω · 400 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	50.47 Hz
Qts	0.249
Qes	0.256
Qms	9.69
Vas	74.74 L
Sd	514.7 cm²
Xmax	5.25 mm
Re	5.55 Ω
Bl	18.4 T·m
Mms	49.22 g
Pe	400 W
Sensitivity	98 dB

Alignment hint

EBP	197 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 10.6 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
BMS 12N620	44.7 -5.77	0.25 =	72.7 -2.04	5.5 +0.25	98 =	close		+
Monacor SP-12/500FH	45 -5.47	0.251 =	76.2 +1.46	6.4 +1.15	98.2 +0.2	close		+
B&C 12PLB76	50 -0.47	0.23 -0.02	75 +0.26	5 -0.25	99 +1	close	Xmax 5 mm < 5.25 mm: lower excursion-limited SPL	+
18 Sound 12CX800	53 +2.53	0.253 =	73 -1.74	4.7 -0.55	99.4 +1.4	close	Xmax 4.7 mm < 5.25 mm: lower excursion-limited SPL	+
Faital PRO 12FH510	45 -5.47	0.25 =	75.2 +0.46	7.5 +2.25	97 -1	close	4 Ω vs 8 Ω: amp load changes	+
Faital PRO 12FH530	45 -5.47	0.26 +0.01	74.1 -0.64	7.5 +2.25	98 =	close		+
P.Audio C12-500MB	47 -3.47	0.238 -0.01	73 -1.74	4.5 -0.75	98 =	close	Xmax 4.5 mm < 5.25 mm: lower excursion-limited SPL	+
Oberton 12B401	46.63 -3.84	0.245 =	69.6 -5.14	6.75 +1.5	97 -1	close		+
Faital PRO 12FH520	50 -0.47	0.29 +0.04	73.7 -1.04	7.25 +2	98 =	close		+
Fane COLOSSUS 12XB	43 -7.47	0.243 -0.01	78 +3.26	6 +0.75	97.7 -0.3	close		+

Compare the closest 3 against the 12B400 →

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.