Focal 25 A1
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 4 Ω |
| Fs | 40.6 Hz |
| Qts | 0.382 |
| Qes | 0.4 |
| Qms | 8.65 |
| Vas | 24.3 L |
| Sd | 339.8 cm² |
| Xmax | 4.4 mm |
| Re | 3.35 Ω |
| Bl | 14.8 T·m |
| Mms | 102.1 g |
| Pe | 200 W |
| Sensitivity | 91.9 dB |
Alignment hint
| EBP | 102 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 10 L |
EBP > 100: favours a ported (bass-reflex) 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 |
|---|---|---|---|---|---|---|---|---|
| Gladen SQX10 | 38.8 -1.8 | 0.387 +0.01 | 24.5 +0.2 | 5 +0.6 | 91.3 -0.6 | close | + | |
| Volt B2500.1 v2014 | 39 -1.6 | 0.346 -0.04 | 26 +1.7 | 4.6 +0.2 | 89.2 -2.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Auditor 250 P | 38.7 -1.9 | 0.454 +0.07 | 24.8 +0.5 | 5 +0.6 | 90.3 -1.6 | close | + | |
| Pioneer TS-W255C | 35 -5.6 | 0.351 -0.03 | 24.9 +0.6 | 6.6 +2.2 | 91 -0.9 | close | + | |
| Focal 11W 7670 | 44.6 +4 | 0.45 +0.07 | 22.9 -1.4 | 4.2 -0.2 | 92.1 +0.2 | close | Xmax 4.2 mm < 4.4 mm: lower excursion-limited SPL | + |
| Kicker COMPVX 10 | 35.4 -5.2 | 0.403 +0.02 | 23 -1.3 | 5.2 +0.8 | 89.6 -2.3 | close | + | |
| Focal 11V 5552 | 40.5 -0.1 | 0.497 +0.12 | 24.1 -0.2 | 4.6 +0.2 | 90.8 -1.1 | close | + | |
| hertz Hertz Audio HX250 | 37 -3.6 | 0.444 +0.06 | 24 -0.3 | 5.3 +0.9 | 90.3 -1.6 | close | + | |
| Focal 27 V1 | 39 -1.6 | 0.445 +0.06 | 21.4 -2.9 | 4.9 +0.5 | 90.4 -1.5 | close | + | |
| Gladen SQX 10 | 38.8 -1.8 | 0.39 +0.01 | 24.5 +0.2 | 10 +5.6 | 87.1 -4.8 | usable | + |
Compare the closest 3 against the 25 A1 →
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.