Pioneer TS-SW2501S4

10" · 4 Ω · 300 W · 84.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	41.6 Hz
Qts	0.93
Qes	1
Qms	13.21
Vas	10.3 L
Sd	350 cm²
Xmax	3.6 mm
Re	3 Ω
Bl	13.9 T·m
Mms	244.7 g
Pe	300 W
Sensitivity	84.9 dB

Alignment hint

EBP	42 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

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
Pioneer TS-SW2541D	43.5 +1.9	0.95 +0.02	8.25 -2.05	6 +2.4	80 -4.9	usable		+
Pioneer TS-SW251	41.3 -0.3	1.09 +0.16	9.75 -0.55	6.6 +3	79.6 -5.3	usable	200 W vs 300 W: lower power handling	+
Focal 27 KX	48 +6.4	0.908 -0.02	14.9 +4.6	4.5 +0.9	86.7 +1.8	usable	8 Ω vs 4 Ω: amp load changes	+
Kenwood KFC-W2511	60 +18.4	0.84 -0.09	9.38 -0.92	7 +3.4	85.2 +0.3	usable		+
JL Audio 10TW1-2	41.45 -0.15	0.65 -0.28	10.31 +0.01	10.31 +6.71	82.5 -2.4	usable	2 Ω vs 4 Ω: amp load changes	+
Pioneer TS-SW2502S4	42 +0.4	0.97 +0.04	18.5 +8.2	6.5 +2.9	83 -1.9	usable		+
Xtant X2 1044	37.2 -4.4	0.961 +0.03	15.9 +5.6	5.7 +2.1	88.5 +3.6	usable	2 Ω vs 4 Ω: amp load changes	+
Skar Audio EV-10 S4	50.9 +9.3	0.76 -0.17	14 +3.7	8.5 +4.9	85.2 +0.3	usable	150 W vs 300 W: lower power handling	+
Focal SUB25KXS	35 -6.6	0.812 -0.12	18 +7.7	7 +3.4	85 +0.1	usable		+
Audiobahn AW1051T	42.7 +1.1	0.82 -0.11	19.822 +9.52	13 +9.4	83.9 -1	usable		+

Compare the closest 3 against the TS-SW2501S4 →

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.