Rockford Fosgate P3D2-12

12" · 4 Ω · 600 W · 89 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	4 Ω
Fs	26.5 Hz
Qts	0.491
Qes	0.53
Qms	6.7
Vas	57.7 L
Sd	570 cm²
Xmax	9.5 mm
Re	3.2 Ω
Bl	16.9 T·m
Mms	284.7 g
Pe	600 W
Sensitivity	89 dB

Alignment hint

EBP	50 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 53.7 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
Rockford Fosgate T1D212	28 +1.5	0.522 +0.03	55.8 -1.9	10.9 +1.4	89.1 +0.1	close		+
Rockford Fosgate T0D212	25.3 -1.2	0.473 -0.02	55 -2.7	10.5 +1	88 -1	close		+
JL Audio 13TW5V2-2	27.6 +1.1	0.526 +0.04	60.3 +2.6	9 -0.5	89.2 +0.2	close	Xmax 9 mm < 9.5 mm: lower excursion-limited SPL	+
Rockford Fosgate P3D4-12	27.7 +1.2	0.517 +0.03	57.7 =	9.4 -0.1	86.3 -2.7	close	8 Ω vs 4 Ω: amp load changes · Xmax 9.4 mm < 9.5 mm: lower excursion-limited SPL	+
Oxygen AIR2 300	26.7 +0.2	0.452 -0.04	62.9 +5.2	8.8 -0.7	89.5 +0.5	close	300 W vs 600 W: lower power handling · Xmax 8.8 mm < 9.5 mm: lower excursion-limited SPL	+
Dayton Audio TIT320C-4 Titanic Mk III	24.9 -1.6	0.458 -0.03	64.3 +6.6	10.5 +1	89.2 +0.2	close		+
JBL GTO 1214	28 +1.5	0.469 -0.02	58.2 +0.5	7.3 -2.2	89.4 +0.4	close	350 W vs 600 W: lower power handling · Xmax 7.3 mm < 9.5 mm: lower excursion-limited SPL	+
Audiomobile ELITE 2212	28 +1.5	0.48 -0.01	59.46 +1.76	12.7 +3.2	85.8 -3.2	close		+
JL Audio 12W7AE-3	27.2 +0.7	0.482 -0.01	66 +8.3	13.7 +4.2	91.2 +2.2	close		+
Infinity KAPPA 1200W	26.5 =	0.496 +0.01	64.47 +6.77	12.75 +3.25	85.1 -3.9	close	2 Ω vs 4 Ω: amp load changes	+

Compare the closest 3 against the P3D2-12 →

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.