JL Audio 12TW3-D4

12" · 16 Ω · 400 W · 83.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	16 Ω
Fs	26.5 Hz
Qts	0.531
Qes	0.558
Qms	10.766
Vas	48.7 L
Sd	539 cm²
Xmax	7.9 mm
Re	9.28 Ω
Bl	28.9 T·m
Mms	302.4 g
Pe	400 W
Sensitivity	83.4 dB

Alignment hint

EBP	47 · sealed
Sealed Vb (Qtc ≈ 0.71)	≈ 63 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 -0.5	0.529 =	55.1 +6.4	10.7 +2.8	85.3 +1.9	close	8 Ω vs 16 Ω: amp load changes	+
Kenwood KFC-XW1200F	24.8 -1.7	0.544 +0.01	62.69 +13.99	8.5 +0.6	83.4 =	close	4 Ω vs 16 Ω: amp load changes	+
Hifonics OLM800D4	29 +2.5	0.525 -0.01	41 -7.7	7.5 -0.4	84.9 +1.5	close	8 Ω vs 16 Ω: amp load changes · Xmax 7.5 mm < 7.9 mm: lower excursion-limited SPL	+
Dayton Audio UM12-22 v2017	26.2 -0.3	0.594 +0.06	46.8 -1.9	9.9 +2	86.7 +3.3	close	4 Ω vs 16 Ω: amp load changes	+
Rockford Fosgate P3D4-12	27.7 +1.2	0.517 -0.01	57.7 +9	9.4 +1.5	86.3 +2.9	close	8 Ω vs 16 Ω: amp load changes	+
Alpine SWR-1242D 12	29 +2.5	0.47 -0.06	45 -3.7	9.1 +1.2	85.7 +2.3	usable	8 Ω vs 16 Ω: amp load changes	+
Infinity KAPPA 1200W	26.5 =	0.496 -0.04	64.47 +15.77	12.75 +4.85	85.1 +1.7	usable	2 Ω vs 16 Ω: amp load changes	+
Ground Zero GZRW 12XD-AL	29 +2.5	0.451 -0.08	52 +3.3	9.2 +1.3	86.1 +2.7	usable	8 Ω vs 16 Ω: amp load changes	+
Rockford Fosgate T1D212	28 +1.5	0.522 -0.01	55.8 +7.1	10.9 +3	89.1 +5.7	usable	4 Ω vs 16 Ω: amp load changes	+
Alpine SWX-1243D Type-X	29 +2.5	0.59 +0.06	38 -10.7	10.8 +2.9	84.2 +0.8	usable	8 Ω vs 16 Ω: amp load changes	+

Compare the closest 3 against the 12TW3-D4 →

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.