FI Audio Q15 DUAL 2
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 4 Ω |
| Fs | 32.1 Hz |
| Qts | 0.419 |
| Qes | 0.44 |
| Qms | 8.61 |
| Vas | 75.6 L |
| Sd | 810 cm² |
| Xmax | 11.3 mm |
| Re | 2.8 Ω |
| Bl | 19.6 T·m |
| Mms | 299.1 g |
| Pe | 1750 W |
| Sensitivity | 94.1 dB |
Alignment hint
| EBP | 73 · 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
| Driver | Fs (Hz) | Qts | Vas (L) | Xmax (mm) | Sens (dB) | Fit | Notes | Compare |
|---|---|---|---|---|---|---|---|---|
| B&C 15BG100 | 36 +3.9 | 0.44 +0.02 | 83 +7.4 | 10.5 -0.8 | 94.5 +0.4 | close | 8 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 SW | 38.2 +6.1 | 0.41 -0.01 | 77 +1.4 | 11.5 +0.2 | 91.7 -2.4 | close | 8 Ω vs 4 Ω: amp load changes · 1000 W vs 1750 W: lower power handling | + |
| MTX Audio TX615 | 28 -4.1 | 0.425 +0.01 | 89.8 +14.2 | 9.5 -1.8 | 94.3 +0.2 | close | 1000 W vs 1750 W: lower power handling · Xmax 9.5 mm < 11.3 mm: lower excursion-limited SPL | + |
| JBL 15WT3000 | 41 +8.9 | 0.44 +0.02 | 76.3 +0.7 | 10.6 -0.7 | 92.5 -1.6 | usable | Xmax 10.6 mm < 11.3 mm: lower excursion-limited SPL | + |
| Faital PRO 15XL1200 | 40 +7.9 | 0.4 -0.02 | 86.9 +11.3 | 12.45 +1.15 | 95 +0.9 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| Ciare 15.00SW | 38.2 +6.1 | 0.415 = | 77 +1.4 | 8.4 -2.9 | 92.6 -1.5 | usable | 8 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 CX15D2 | 34 +1.9 | 0.389 -0.03 | 59 -16.6 | 10 -1.3 | 92.4 -1.7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 10 mm < 11.3 mm: lower excursion-limited SPL | + |
| Ciare 15.00SW-4 | 29 -3.1 | 0.407 -0.01 | 113 +37.4 | 11.1 -0.2 | 93.4 -0.7 | usable | 1000 W vs 1750 W: lower power handling · Xmax 11.1 mm < 11.3 mm: lower excursion-limited SPL | + |
| B&C 15 BG 100 | 36 +3.9 | 0.446 +0.03 | 83 +7.4 | 8 -3.3 | 92.9 -1.2 | usable | 8 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 RFL15 | 35 +2.9 | 0.414 -0.01 | 44 -31.6 | 11.1 -0.2 | 94.3 +0.2 | usable | Xmax 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.