Auditor 250 S
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 4 Ω |
| Fs | 42.1 Hz |
| Qts | 0.631 |
| Qes | 0.71 |
| Qms | 5.69 |
| Vas | 20.5 L |
| Sd | 301.7 cm² |
| Xmax | 5 mm |
| Re | 3.4 Ω |
| Bl | 10.6 T·m |
| Mms | 88.8 g |
| Pe | 250 W |
| Sensitivity | 89 dB |
Alignment hint
| EBP | 59 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 80.1 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 |
|---|---|---|---|---|---|---|---|---|
| Focal 27 V2 | 38.5 -3.6 | 0.629 = | 21.3 +0.8 | 5.5 +0.5 | 90.1 +1.1 | close | + | |
| Fusion PF-SW100D4 | 45.3 +3.2 | 0.642 +0.01 | 19.3 -1.2 | 5.8 +0.8 | 88.1 -0.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Sony XS-L104P5B | 37.7 -4.4 | 0.569 -0.06 | 19.3 -1.2 | 6 +1 | 87.8 -1.2 | close | + | |
| MTX Audio RT10-04 vp | 38.3 -3.8 | 0.711 +0.08 | 21.6 +1.1 | 5.1 +0.1 | 87.2 -1.8 | close | + | |
| Sony XS-GTR101L | 44 +1.9 | 0.72 +0.09 | 21 +0.5 | 6.9 +1.9 | 85.4 -3.6 | usable | + | |
| Focal ACCESS 27A | 41.3 -0.8 | 0.48 -0.15 | 21.2 +0.7 | 5 = | 90.8 +1.8 | usable | + | |
| Pioneer TS-W257D4 DVC | 39.7 -2.4 | 0.546 -0.08 | 18.2 -2.3 | 5.3 +0.3 | 92.2 +3.2 | usable | 2 Ω vs 4 Ω: amp load changes | + |
| Focal SUB P25 | 48 +5.9 | 0.621 -0.01 | 16 -4.5 | 4.1 -0.9 | 89.4 +0.4 | usable | Xmax 4.1 mm < 5 mm: lower excursion-limited SPL | + |
| hertz Hertz Audio ES 250.5 | 35 -7.1 | 0.609 -0.02 | 27.7 +7.2 | 6.6 +1.6 | 89 = | usable | + | |
| Oxygen AIR2 250 | 36.4 -5.7 | 0.502 -0.13 | 22.4 +1.9 | 5.8 +0.8 | 88.3 -0.7 | usable | + |
Compare the closest 3 against the 250 S →
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.