Alpine SWA-10S4

10" · 4 Ω · 250 W · 86.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	32 Hz
Qts	0.42
Qes	0.451
Qms	6.04
Vas	41 L
Sd	330 cm²
Xmax	10 mm
Re	3.6 Ω
Bl	12.24 T·m
Mms	93.3 g
Pe	250 W
Sensitivity	86.6 dB

Alignment hint

EBP	71 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 22.3 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
Morel UW 1058	33 +1	0.434 +0.01	40.6 -0.4	8.9 -1.1	86.7 +0.1	close	8 Ω vs 4 Ω: amp load changes · Xmax 8.9 mm < 10 mm: lower excursion-limited SPL	+
Brax BRAX MATRIX ML10	35 +3	0.46 +0.04	40 -1	12.5 +2.5	87.3 +0.7	close		+
JL Audio 10WXV2-4	29.38 -2.62	0.45 +0.03	47 +6	10 =	86.06 -0.54	close		+
Infinity KAPPA PERFECT 10.1	28.35 -3.65	0.42 =	38.511 -2.49	14.15 +4.15	84.8 -1.8	close		+
Kenwood KFC-W2509	35 +3	0.42 =	44 +3	8 -2	88.2 +1.6	close	175 W vs 250 W: lower power handling · Xmax 8 mm < 10 mm: lower excursion-limited SPL	+
Infinity 1030W	29.62 -2.38	0.39 -0.03	35.72 -5.28	12.25 +2.25	88 +1.4	close		+
Ground Zero GZIW 250X	30.1 -1.9	0.44 +0.02	43.8 +2.8	7.5 -2.5	85.9 -0.7	close	Xmax 7.5 mm < 10 mm: lower excursion-limited SPL	+
Beyma 10NMFS	35 +3	0.42 =	45 +4	14.5 +4.5	90 +3.4	close	8 Ω vs 4 Ω: amp load changes	+
Infinity REFERENCE 1060W	29 -3	0.42 =	32.9 -8.1	13.0048 +3	88 +1.4	close		+
Dayton Audio RSS265HF-4 v2012	26.2 -5.8	0.441 +0.02	45 +4	9.4 -0.6	87.8 +1.2	usable	Xmax 9.4 mm < 10 mm: lower excursion-limited SPL	+

Compare the closest 3 against the SWA-10S4 →

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.