Focal SUB12

12" · 4 Ω · 300 W · 90.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	24 Hz
Qts	0.407
Qes	0.442
Qms	5.146
Vas	90 L
Sd	471 cm²
Xmax	9.8 mm
Re	3 Ω
Bl	12.5 T·m
Mms	152 g
Pe	300 W
Sensitivity	90.7 dB

Alignment hint

EBP	54 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 44.6 L

EBP 50-100: works in either a sealed or ported 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
TC Sounds EPIC 12 DVC v2009	24 =	0.399 -0.01	91.2 +1.2	11.7 +1.9	90.1 -0.6	close		+
Pioneer TS-W12PRS	24 =	0.392 -0.01	93 +3	10.3 +0.5	90.4 -0.3	close		+
TC Sounds EPIC 12 DVC v2014	24 =	0.394 -0.01	91 +1	12.2 +2.4	90.2 -0.5	close		+
TC Sounds EPIC 12 DVC v2012	24 =	0.394 -0.01	91.1 +1.1	12.5 +2.7	90.2 -0.5	close		+
Dayton Audio DCS305-4 v2015	24.2 +0.2	0.396 -0.01	92.3 +2.3	8.4 -1.4	90.7 =	close	Xmax 8.4 mm < 9.8 mm: lower excursion-limited SPL	+
Dayton Audio DCS305-4 v2017	24.2 +0.2	0.396 -0.01	92.3 +2.3	8.4 -1.4	90.7 =	close	Xmax 8.4 mm < 9.8 mm: lower excursion-limited SPL	+
Dayton Audio DCS305-4 v2018	24.2 +0.2	0.396 -0.01	92.3 +2.3	8.4 -1.4	90.7 =	close	Xmax 8.4 mm < 9.8 mm: lower excursion-limited SPL	+
Dayton Audio DCS305-4 v2021	24.2 +0.2	0.396 -0.01	92.3 +2.3	8.4 -1.4	90.7 =	close	Xmax 8.4 mm < 9.8 mm: lower excursion-limited SPL	+
Dayton Audio RSS315HF-4 v2016	24.2 +0.2	0.388 -0.02	84.1 -5.9	9.3 -0.5	90.3 -0.4	close	Xmax 9.3 mm < 9.8 mm: lower excursion-limited SPL	+
Rockford Fosgate RFR2212	24 =	0.376 -0.03	93 +3	13 +3.2	90.5 -0.2	close		+

Compare the closest 3 against the SUB12 →

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.