Focal SUB10

10" · 4 Ω · 250 W · 84.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	21 Hz
Qts	0.526
Qes	0.569
Qms	6.88
Vas	45 L
Sd	314 cm²
Xmax	9 mm
Re	3.3 Ω
Bl	11.6 T·m
Mms	176.4 g
Pe	250 W
Sensitivity	84.5 dB

Alignment hint

EBP	37 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 55.8 L

EBP < 50: favours a sealed (closed) 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
SB Acoustics SW26DAC76-4	22 +1	0.467 -0.06	45.3 +0.3	9.6 +0.6	85.8 +1.3	close		+
Dayton Audio RSS265HF-8	24.9 +3.9	0.497 -0.03	51.6 +6.6	9.4 +0.4	84.3 -0.2	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio RSS265HF-8 v2018	24.9 +3.9	0.485 -0.04	52.5 +7.5	9.4 +0.4	84.3 -0.2	close	8 Ω vs 4 Ω: amp load changes	+
Hertz Audio ES 250	26.9 +5.9	0.54 +0.01	54 +9	9 =	84.4 -0.1	usable		+
Phase Linear ALIANTE 10 SI	22 +1	0.504 -0.02	50.3 +5.3	5.8 -3.2	84.4 -0.1	usable	8 Ω vs 4 Ω: amp load changes · 100 W vs 250 W: lower power handling · Xmax 5.8 mm < 9 mm: lower excursion-limited SPL	+
Wavecor SW263WA01	24 +3	0.44 -0.09	40.5 -4.5	8.7 -0.3	84 -0.5	usable	8 Ω vs 4 Ω: amp load changes · Xmax 8.7 mm < 9 mm: lower excursion-limited SPL	+
Wavecor SW263WA03	24 +3	0.44 -0.09	40.5 -4.5	8.7 -0.3	84 -0.5	usable	8 Ω vs 4 Ω: amp load changes · Xmax 8.7 mm < 9 mm: lower excursion-limited SPL	+
Rockford Fosgate P1S4-10	30 +9	0.52 -0.01	40 -5	9 =	84.2 -0.3	usable		+
JL Audio 10W1V3-2	25.23 +4.23	0.436 -0.09	44.15 -0.85	11 +2	83.9 -0.6	usable	2 Ω vs 4 Ω: amp load changes	+
JL Audio 10W1V3-4	26.15 +5.15	0.446 -0.08	43.41 -1.59	11 +2	84.2 -0.3	usable		+

Compare the closest 3 against the SUB10 →

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.