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FI Audio Q12 DUAL 2

12" · 4 Ω · 1750 W · 91.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size12"
Impedance4 Ω
Fs33.9 Hz
Qts0.371
Qes0.39
Qms7.69
Vas28.3 L
Sd481 cm²
Xmax10.6 mm
Re2.8 Ω
Bl19.7 T·m
Mms252.6 g
Pe1750 W
Sensitivity91.1 dB

Alignment hint

EBP87 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 10.7 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

DriverFs (Hz)QtsVas (L)Xmax (mm)Sens (dB)FitNotesCompare
Ascendant Audio HAVOC 12 D233.7 -0.20.379 +0.0128.9 +0.68.2 -2.494 +2.9close2 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling · Xmax 8.2 mm < 10.6 mm: lower excursion-limited SPL+
Pioneer TS-W5102SPL30 -3.90.344 -0.0326.7 -1.612.6 +292.3 +1.2close2 Ω vs 4 Ω: amp load changes+
Hifonics CX12D236 +2.10.336 -0.0325 -3.312.5 +1.990.1 -1close8 Ω vs 4 Ω: amp load changes+
MTX Audio TX81235 +1.10.422 +0.0524.6 -3.710 -0.691.6 +0.5closeXmax 10 mm < 10.6 mm: lower excursion-limited SPL+
Soundstream T4-1236.5 +2.60.371 =29.3 +16.6 -491.3 +0.2close900 W vs 1750 W: lower power handling · Xmax 6.6 mm < 10.6 mm: lower excursion-limited SPL+
Audio System KRYPTON 1237 +3.10.39 +0.0230 +1.717 +6.487.5 -3.6usable1000 W vs 1750 W: lower power handling+
Ciare 12.00 SW43.61 +9.710.38 +0.0132 +3.711.5 +0.990.1 -1usable8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling+
Gladen SQL 12 EXTREME33 -0.90.353 -0.0236 +7.79.4 -1.293.1 +2usable2 Ω vs 4 Ω: amp load changes · 1300 W vs 1750 W: lower power handling · Xmax 9.4 mm < 10.6 mm: lower excursion-limited SPL+
B&C 12FG10034 +0.10.36 -0.0149 +20.710.3 -0.391 -0.1usable8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling · Xmax 10.3 mm < 10.6 mm: lower excursion-limited SPL+
DC Audio LV4 D235.9 +20.5 +0.1330.6 +2.311 +0.492.2 +1.1usable+

Compare the closest 3 against the Q12 DUAL 2 →

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.