Kenwood KFC-WPS1000F

10" · 4 Ω · 250 W · 83.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	10"
Impedance	4 Ω
Fs	38.6 Hz
Qts	0.722
Qes	0.836
Qms	5.3
Vas	21.05 L
Sd	340 cm²
Xmax	8 mm
Re	3 Ω
Bl	10.7 T·m
Mms	127 g
Pe	250 W
Sensitivity	83.4 dB

Alignment hint

EBP	46 · 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
Kenwood KFC-XW100F	38.6 =	0.72 =	21.05 =	7.5 -0.5	83.4 =	close	Xmax 7.5 mm < 8 mm: lower excursion-limited SPL	+
Sony XS-GTR101L	44 +5.4	0.72 =	21 -0.05	6.9 -1.1	85.4 +2	close	Xmax 6.9 mm < 8 mm: lower excursion-limited SPL	+
Audiobahn AW1051T	42.7 +4.1	0.82 +0.1	19.822 -1.23	13 +5	83.9 +0.5	close		+
MTX Audio RT10-04 vp	38.3 -0.3	0.711 -0.01	21.6 +0.55	5.1 -2.9	87.2 +3.8	usable	Xmax 5.1 mm < 8 mm: lower excursion-limited SPL	+
Rockford Fosgate T1D410	36 -2.6	0.647 -0.07	15.7 -5.35	7.3 -0.7	82.9 -0.5	usable	8 Ω vs 4 Ω: amp load changes · Xmax 7.3 mm < 8 mm: lower excursion-limited SPL	+
Focal SUB25KXS	35 -3.6	0.812 +0.09	18 -3.05	7 -1	85 +1.6	usable	Xmax 7 mm < 8 mm: lower excursion-limited SPL	+
JL Audio 10TW3-D4	32.3 -6.3	0.62 -0.1	19.8 -1.25	7 -1	81.5 -1.9	usable	16 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 8 mm: lower excursion-limited SPL	+
Hertz Audio DS 250.3	36 -2.6	0.62 -0.1	29 +7.95	10 +2	84.8 +1.4	usable		+
Skar Audio EV-10 S2	47.5 +8.9	0.69 -0.03	15.2 -5.85	8.5 +0.5	85.1 +1.7	usable	2 Ω vs 4 Ω: amp load changes · 150 W vs 250 W: lower power handling	+
Pioneer TS-ME100WS	48 +9.4	0.82 +0.1	26.9 +5.85	9.6 +1.6	84 +0.6	usable		+

Compare the closest 3 against the KFC-WPS1000F →

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.