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JL Audio 12TW1-4

12" · 4 Ω · 300 W · 85.15 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance4 Ω
Fs32.35 Hz
Qts0.529
Qes0.56
Qms11.066
Vas33.67 L
Sd436 cm²
Xmax10 mm
Re3.514 Ω
Bl15.71 T·m
Mms193.6 g
Pe300 W
Sensitivity85.15 dB

Alignment hint

EBP58 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 42.8 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Monacor RAPTOR 12 MK234 +1.650.523 -0.0132 -1.6710.1 +0.189.2 +4.05close+
JL Audio 12TW1-235 +2.650.577 +0.0528.54 -5.1310 =85.07 -0.08close2 Ω vs 4 Ω: amp load changes+
Pioneer TS-SW124D(PREMIER)31.7 -0.650.55 +0.0228.062 -5.618.6 -1.483.9 -1.25closeXmax 8.6 mm < 10 mm: lower excursion-limited SPL+
Alpine SWX-1243D Type-X29 -3.350.59 +0.0638 +4.3310.8 +0.884.2 -0.95close8 Ω vs 4 Ω: amp load changes+
Hifonics MXZ 12D231 -1.350.443 -0.0930 -3.6710.3 +0.387.3 +2.15usable8 Ω vs 4 Ω: amp load changes+
Hifonics OLM800D429 -3.350.525 =41 +7.337.5 -2.584.9 -0.25usable8 Ω vs 4 Ω: amp load changes · Xmax 7.5 mm < 10 mm: lower excursion-limited SPL+
Dayton Audio RSS315HE-2232 -0.350.461 -0.0732.4 -1.278.2 -1.888.1 +2.95usable8 Ω vs 4 Ω: amp load changes · Xmax 8.2 mm < 10 mm: lower excursion-limited SPL+
American Bass DX 1235.6 +3.250.6 +0.0741.5 +7.8312 +286.2 +1.05usable+
Rockford Fosgate T112D231 -1.350.474 -0.0634.8 +1.138.2 -1.889 +3.85usableXmax 8.2 mm < 10 mm: lower excursion-limited SPL+
JBL W12GTI31.8 -0.550.508 -0.0244.8 +11.139.9 -0.190.1 +4.95usableXmax 9.9 mm < 10 mm: lower excursion-limited SPL+

Compare the closest 3 against the 12TW1-4 →

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.