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MTX Audio RFL12

12" · 4 Ω · 3000 W · 90.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance4 Ω
Fs35 Hz
Qts0.353
Qes0.37
Qms7.61
Vas14.6 L
Sd497.7 cm²
Xmax9.3 mm
Re2 Ω
Bl24.2 T·m
Mms491.8 g
Pe3000 W
Sensitivity90.3 dB

Alignment hint

EBP95 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 4.8 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
Hifonics CX12D236 +10.336 -0.0225 +10.412.5 +3.290.1 -0.2usable8 Ω vs 4 Ω: amp load changes+
FI Audio Q12 DUAL 233.9 -1.10.371 +0.0228.3 +13.710.6 +1.391.1 +0.8usable1750 W vs 3000 W: lower power handling+
MTX Audio TX81235 =0.422 +0.0724.6 +1010 +0.791.6 +1.3usable1800 W vs 3000 W: lower power handling+
Pioneer TS-W5102SPL30 -50.344 -0.0126.7 +12.112.6 +3.392.3 +2usable2 Ω vs 4 Ω: amp load changes+
Rockford Fosgate T2D21238.7 +3.70.489 +0.1413.6 -17.1 -2.287.3 -3usable1200 W vs 3000 W: lower power handling · Xmax 7.1 mm < 9.3 mm: lower excursion-limited SPL+
DD Audio 712D437.7 +2.70.478 +0.1320.2 +5.67 -2.391.2 +0.9usable1200 W vs 3000 W: lower power handling · Xmax 7 mm < 9.3 mm: lower excursion-limited SPL+
Soundstream T4-1236.5 +1.50.371 +0.0229.3 +14.76.6 -2.791.3 +1usable900 W vs 3000 W: lower power handling · Xmax 6.6 mm < 9.3 mm: lower excursion-limited SPL+
Gladen SQL 12 EXTREME33 -20.353 =36 +21.49.4 +0.193.1 +2.8usable2 Ω vs 4 Ω: amp load changes · 1300 W vs 3000 W: lower power handling+
Ascendant Audio HAVOC 12 D233.7 -1.30.379 +0.0328.9 +14.38.2 -1.194 +3.7usable2 Ω vs 4 Ω: amp load changes · 1000 W vs 3000 W: lower power handling · Xmax 8.2 mm < 9.3 mm: lower excursion-limited SPL+
Audio System KRYPTON 1237 +20.39 +0.0430 +15.417 +7.787.5 -2.8usable1000 W vs 3000 W: lower power handling+

Compare the closest 3 against the RFL12 →

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.