Kenwood KFC-XW1200F

12" · 4 Ω · 350 W · 83.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	24.8 Hz
Qts	0.544
Qes	0.67
Qms	2.9
Vas	62.69 L
Sd	490 cm²
Xmax	8.5 mm
Re	3.2 Ω
Bl	12.9 T·m
Mms	224 g
Pe	350 W
Sensitivity	83.4 dB

Alignment hint

EBP	37 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 90.9 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
Rockford Fosgate T0D412	26 +1.2	0.529 -0.02	55.1 -7.59	10.7 +2.2	85.3 +1.9	close	8 Ω vs 4 Ω: amp load changes	+
Dayton Audio RSS315HFA-8	25 +0.2	0.526 -0.02	75 +12.31	9.9 +1.4	85.5 +2.1	close	8 Ω vs 4 Ω: amp load changes	+
Infinity KAPPA 1200W	26.5 +1.7	0.496 -0.05	64.47 +1.78	12.75 +4.25	85.1 +1.7	close	2 Ω vs 4 Ω: amp load changes	+
JL Audio 12TW3-D4	26.5 +1.7	0.531 -0.01	48.7 -13.99	7.9 -0.6	83.4 =	close	16 Ω vs 4 Ω: amp load changes · Xmax 7.9 mm < 8.5 mm: lower excursion-limited SPL	+
Kenwood KFC-WPS1200F	24.8 =	0.544 =	62.685 =	8.5 =	91 +7.6	close		+
Rockford Fosgate P1S2-12	25 +0.2	0.55 +0.01	88.3 +25.61	9 +0.5	85.1 +1.7	close	2 Ω vs 4 Ω: amp load changes · 250 W vs 350 W: lower power handling	+
Rockford Fosgate P1S4-12	25 +0.2	0.55 +0.01	88.3 +25.61	9 +0.5	85.1 +1.7	close	250 W vs 350 W: lower power handling	+
Rockford Fosgate P3D4-12	27.7 +2.9	0.517 -0.03	57.7 -4.99	9.4 +0.9	86.3 +2.9	close	8 Ω vs 4 Ω: amp load changes	+
JL Audio 12W1V3-2	26.55 +1.75	0.52 -0.02	72 +9.31	11 +2.5	85.9 +2.5	close	2 Ω vs 4 Ω: amp load changes	+
Rockford Fosgate P2D4-12	27 +2.2	0.581 +0.04	70.3 +7.61	10.1 +1.6	86.8 +3.4	usable	8 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the KFC-XW1200F →

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.