Focal 30A1

12" · 4 Ω · 250 W · 93.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	37.4 Hz
Qts	0.42
Qes	0.45
Qms	6.37
Vas	53 L
Sd	510.7 cm²
Xmax	5.2 mm
Re	3.2 Ω
Bl	14.5 T·m
Mms	125 g
Pe	250 W
Sensitivity	93.9 dB

Alignment hint

EBP	83 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 28.9 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
Focal ACCESS 30 A1	37.4 =	0.42 =	53 =	5.2 =	93.9 =	close		+
Focal 33K	38.4 +1	0.415 -0.01	51.1 -1.9	5.9 +0.7	93.5 -0.4	close		+
Celestion FTR12-4080DL/4	35.3 -2.1	0.428 +0.01	51.4 -1.6	8 +2.8	92.5 -1.4	close		+
SICA 12 SR 3 CP v2020	37.8 +0.4	0.402 -0.02	60.5 +7.5	5 -0.2	92.5 -1.4	close	8 Ω vs 4 Ω: amp load changes · Xmax 5 mm < 5.2 mm: lower excursion-limited SPL	+
Sica 12 SR 3 PL	36 -1.4	0.42 =	60.4 +7.4	7 +1.8	91.8 -2.1	close	8 Ω vs 4 Ω: amp load changes	+
JBL 1200 GTI	37 -0.4	0.47 +0.05	56.7 +3.7	8 +2.8	94.5 +0.6	close		+
SICA 12 SR 3 PL v2018	36 -1.4	0.418 =	60.4 +7.4	7 +1.8	91.7 -2.2	close	8 Ω vs 4 Ω: amp load changes	+
Pioneer TS-W306C	32.6 -4.8	0.414 -0.01	55.6 +2.6	8.1 +2.9	92.8 -1.1	close		+
Sica 12 SR 3 CP	37 -0.4	0.4 -0.02	60.9 +7.9	8 +2.8	92.2 -1.7	close	8 Ω vs 4 Ω: amp load changes	+
Fountek FW322 - 8 Ohms	40.1 +2.7	0.461 +0.04	53 =	5 -0.2	91 -2.9	close	8 Ω vs 4 Ω: amp load changes · Xmax 5 mm < 5.2 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 30A1 →

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.