Fertin Acoustics 30EXM8
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 23.7 Hz |
| Qts | 0.147 |
| Qes | 0.15 |
| Qms | 6.46 |
| Vas | 250 L |
| Sd | 490 cm² |
| Xmax | 3 mm |
| Re | 6.2 Ω |
| Bl | 19.3 T·m |
| Mms | 60.7 g |
| Pe | 50 W |
| Sensitivity | 96.5 dB |
Alignment hint
| EBP | 158 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 11.3 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 |
|---|---|---|---|---|---|---|---|---|
| Fertin Acoustics 30SM8 | 21.7 -2 | 0.146 = | 324 +74 | 3 = | 96.5 = | close | + | |
| Audax HD33S66 | 24 +0.3 | 0.145 = | 338 +88 | 3.5 +0.5 | 98 +1.5 | close | + | |
| Tannoy 3128 | 25 +1.3 | 0.195 +0.05 | 276 +26 | 3 = | 96.5 = | usable | + | |
| Tannoy HPD 315A | 25 +1.3 | 0.195 +0.05 | 276 +26 | 3 = | 96.5 = | usable | + | |
| Audax LFP502 | 24 +0.3 | 0.208 +0.06 | 267 +17 | 3.5 +0.5 | 95.4 -1.1 | usable | + | |
| Audax PR33SM150 | 24 +0.3 | 0.208 +0.06 | 267 +17 | 3.5 +0.5 | 95.4 -1.1 | usable | + | |
| Pioneer A30GU30-55D | 24 +0.3 | 0.209 +0.06 | 277 +27 | 3.1 +0.1 | 97.9 +1.4 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Focal AUDIOM 12VX | 23.5 -0.2 | 0.202 +0.06 | 238 -12 | 6 +3 | 94.5 -2 | usable | + | |
| Audax PR33S66 | 30 +6.3 | 0.169 +0.02 | 214.4 -35.6 | 3.8 +0.8 | 98.2 +1.7 | usable | + | |
| Fluxmag 1201-LB | 28.9 +5.2 | 0.163 +0.02 | 196.2 -53.8 | 4 +1 | 98.4 +1.9 | usable | + |
Compare the closest 3 against the 30EXM8 →
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.