Focal 27 F
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 4 Ω |
| Fs | 43.7 Hz |
| Qts | 0.82 |
| Qes | 0.87 |
| Qms | 14.4 |
| Vas | 45.5 L |
| Sd | 339.8 cm² |
| Xmax | 5.8 mm |
| Re | 2.9 Ω |
| Bl | 6.6 T·m |
| Mms | 47.2 g |
| Pe | 150 W |
| Sensitivity | 92.8 dB |
Alignment hint
| EBP | 50 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
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 |
|---|---|---|---|---|---|---|---|---|
| Focal 11V 5451 | 48.6 +4.9 | 0.825 +0.01 | 39 -6.5 | 5.1 -0.7 | 93 +0.2 | close | Xmax 5.1 mm < 5.8 mm: lower excursion-limited SPL | + |
| Focal 10V1 | 49.7 +6 | 0.822 = | 42.5 -3 | 4.9 -0.9 | 93.7 +0.9 | close | Xmax 4.9 mm < 5.8 mm: lower excursion-limited SPL | + |
| Pioneer TS-W254F | 39.2 -4.5 | 0.765 -0.05 | 36.2 -9.3 | 9.7 +3.9 | 90.3 -2.5 | usable | + | |
| JBL GT2-10 | 43.9 +0.2 | 0.572 -0.25 | 37.9 -7.6 | 5.7 -0.1 | 93.2 +0.4 | usable | Xmax 5.7 mm < 5.8 mm: lower excursion-limited SPL | + |
| Audax HT240G0 | 48.9 +5.2 | 0.672 -0.15 | 35.8 -9.7 | 5.5 -0.3 | 94 +1.2 | usable | Xmax 5.5 mm < 5.8 mm: lower excursion-limited SPL | + |
| MTX Audio T41012 | 40.1 -3.6 | 0.744 -0.08 | 39.1 -6.4 | 6.2 +0.4 | 86.2 -6.6 | usable | 16 Ω vs 4 Ω: amp load changes | + |
| MTX Audio RTX108 | 58.7 +15 | 0.727 -0.09 | 37.1 -8.4 | 5.7 -0.1 | 93.5 +0.7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 5.7 mm < 5.8 mm: lower excursion-limited SPL | + |
| Dayton Audio PA255-8 v2017 | 50.5 +6.8 | 0.612 -0.21 | 41.2 -4.3 | 5 -0.8 | 92.7 -0.1 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 5 mm < 5.8 mm: lower excursion-limited SPL | + |
| Skytronic SP 1000 | 52 +8.3 | 1.064 +0.24 | 51.6 +6.1 | 6 +0.2 | 90.6 -2.2 | usable | 8 Ω vs 4 Ω: amp load changes | + |
| Sphynx SP-W250-PP | 43 -0.7 | 0.794 -0.03 | 65.8 +20.3 | 4 -1.8 | 90.1 -2.7 | usable | 8 Ω vs 4 Ω: amp load changes · 80 W vs 150 W: lower power handling · Xmax 4 mm < 5.8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 27 F →
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.