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FI Audio Q15 DUAL 2

15" · 4 Ω · 1750 W · 94.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size15"
Impedance4 Ω
Fs32.1 Hz
Qts0.419
Qes0.44
Qms8.61
Vas75.6 L
Sd810 cm²
Xmax11.3 mm
Re2.8 Ω
Bl19.6 T·m
Mms299.1 g
Pe1750 W
Sensitivity94.1 dB

Alignment hint

EBP73 · flexible
Sealed Vb (Qtc ≈ 0.71)≈ 40.9 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
B&C 15BG10036 +3.90.44 +0.0283 +7.410.5 -0.894.5 +0.4close8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling · Xmax 10.5 mm < 11.3 mm: lower excursion-limited SPL+
Ciare 15.00 SW38.2 +6.10.41 -0.0177 +1.411.5 +0.291.7 -2.4close8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling+
MTX Audio TX61528 -4.10.425 +0.0189.8 +14.29.5 -1.894.3 +0.2close1000 W vs 1750 W: lower power handling · Xmax 9.5 mm < 11.3 mm: lower excursion-limited SPL+
JBL 15WT300041 +8.90.44 +0.0276.3 +0.710.6 -0.792.5 -1.6usableXmax 10.6 mm < 11.3 mm: lower excursion-limited SPL+
Faital PRO 15XL120040 +7.90.4 -0.0286.9 +11.312.45 +1.1595 +0.9usable8 Ω vs 4 Ω: amp load changes+
Ciare 15.00SW38.2 +6.10.415 =77 +1.48.4 -2.992.6 -1.5usable8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling · Xmax 8.4 mm < 11.3 mm: lower excursion-limited SPL+
Hifonics CX15D234 +1.90.389 -0.0359 -16.610 -1.392.4 -1.7usable8 Ω vs 4 Ω: amp load changes · Xmax 10 mm < 11.3 mm: lower excursion-limited SPL+
Ciare 15.00SW-429 -3.10.407 -0.01113 +37.411.1 -0.293.4 -0.7usable1000 W vs 1750 W: lower power handling · Xmax 11.1 mm < 11.3 mm: lower excursion-limited SPL+
B&C 15 BG 10036 +3.90.446 +0.0383 +7.48 -3.392.9 -1.2usable8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling · Xmax 8 mm < 11.3 mm: lower excursion-limited SPL+
MTX Audio RFL1535 +2.90.414 -0.0144 -31.611.1 -0.294.3 +0.2usableXmax 11.1 mm < 11.3 mm: lower excursion-limited SPL+

Compare the closest 3 against the Q15 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.