Fertin Acoustics 30SM8
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 21.7 Hz |
| Qts | 0.146 |
| Qes | 0.15 |
| Qms | 5.86 |
| Vas | 324 L |
| Sd | 490 cm² |
| Xmax | 3 mm |
| Re | 6.2 Ω |
| Bl | 17.7 T·m |
| Mms | 55.9 g |
| Pe | 50 W |
| Sensitivity | 96.5 dB |
Alignment hint
| EBP | 145 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 14.4 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 |
|---|---|---|---|---|---|---|---|---|
| Audax HD33S66 | 24 +2.3 | 0.145 = | 338 +14 | 3.5 +0.5 | 98 +1.5 | close | + | |
| Fertin Acoustics 30EXM8 | 23.7 +2 | 0.147 = | 250 -74 | 3 = | 96.5 = | close | + | |
| Monacor SPH-300TC v1 | 23 +1.3 | 0.198 +0.05 | 315 -9 | 4 +1 | 95.4 -1.1 | usable | + | |
| Focal AUDIOM 12A | 21.5 -0.2 | 0.165 +0.02 | 489 +165 | 4.5 +1.5 | 97.8 +1.3 | usable | + | |
| Tannoy 3128 | 25 +3.3 | 0.195 +0.05 | 276 -48 | 3 = | 96.5 = | usable | + | |
| Tannoy HPD 315A | 25 +3.3 | 0.195 +0.05 | 276 -48 | 3 = | 96.5 = | usable | + | |
| Fertin Acoustics 30 MODEL 7 | 22 +0.3 | 0.098 -0.05 | 336 +12 | 3 = | 98.6 +2.1 | usable | + | |
| SEAS 33F-WKA | 22 +0.3 | 0.209 +0.06 | 310 -14 | 5 +2 | 95 -1.5 | usable | + | |
| Focal AUDIOM 12V | 25 +3.3 | 0.203 +0.06 | 318 -6 | 6 +3 | 97 +0.5 | usable | + | |
| Klipsch K31 | 19 -2.7 | 0.185 +0.04 | 386 +62 | 5 +2 | 94.8 -1.7 | usable | + |
Compare the closest 3 against the 30SM8 →
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.