Oberton 12MB35

12" · 8 Ω · 700 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	51.43 Hz
Qts	0.267
Qes	0.272
Qms	13.58
Vas	50.07 L
Sd	514.7 cm²
Xmax	6.75 mm
Re	5 Ω
Bl	20.5 T·m
Mms	70.76 g
Pe	700 W
Sensitivity	98 dB

Alignment hint

EBP	189 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 8.3 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
B&C 12NDL88	51 -0.43	0.27 =	52 +1.93	8 +1.25	98 =	close		+
Beyma 12MCB700	51 -0.43	0.27 =	59.5 +9.43	7 +0.25	98 =	close		+
B&C 12 NDL 88	51 -0.43	0.274 +0.01	52 +1.93	5.7 -1.05	97.8 -0.2	close	Xmax 5.7 mm < 6.75 mm: lower excursion-limited SPL	+
Sica 12 K 4 PL	48.5 -2.93	0.25 -0.02	47.4 -2.67	7 +0.25	97.1 -0.9	close		+
18 Sound 12W750	55 +3.57	0.27 =	58 +7.93	7 +0.25	97 -1	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 12 P1000/Nd	47 -4.43	0.26 -0.01	49 -1.07	8 +1.25	96 -2	close		+
18 Sound 12LW800	52 +0.57	0.29 +0.02	48 -2.07	6.5 -0.25	96 -2	close	500 W vs 700 W: lower power handling · Xmax 6.5 mm < 6.75 mm: lower excursion-limited SPL	+
RCF LF12X401	45 -6.43	0.27 =	50 -0.07	9 +2.25	96.5 -1.5	close		+
18 Sound 12NTLW2500	52 +0.57	0.31 +0.04	52.7 +2.63	7.6 +0.85	97.5 -0.5	close	4 Ω vs 8 Ω: amp load changes · 500 W vs 700 W: lower power handling	+
Beyma 12MC700Nd	51 -0.43	0.24 -0.03	58 +7.93	7 +0.25	99 +1	close		+

Compare the closest 3 against the 12MB35 →

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.