Fostex F 356
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 46.9 Hz |
| Qts | 0.272 |
| Qes | 0.32 |
| Qms | 1.81 |
| Vas | 143 L |
| Sd | 551.5 cm² |
| Xmax | 2.6 mm |
| Re | 6.8 Ω |
| Bl | 14.7 T·m |
| Mms | 34.4 g |
| Pe | 60 W |
| Sensitivity | 99.3 dB |
Alignment hint
| EBP | 147 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 24.8 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 |
|---|---|---|---|---|---|---|---|---|
| Fane STUDIO 12B | 47 +0.1 | 0.274 = | 144 +1 | 5.1 +2.5 | 100.8 +1.5 | close | + | |
| B&C 12 PH 32 | 42 -4.9 | 0.28 +0.01 | 155 +12 | 3 +0.4 | 99.2 -0.1 | close | + | |
| Altec ER-12 | 47.7 +0.8 | 0.256 -0.02 | 121.2 -21.8 | 2.5 -0.1 | 99.6 +0.3 | close | Xmax 2.5 mm < 2.6 mm: lower excursion-limited SPL | + |
| Eminence KAPPA-12A | 45 -1.9 | 0.27 = | 112.1 -30.9 | 3.2 +0.6 | 99.3 = | close | + | |
| Eminence KAPPA 12 | 45 -1.9 | 0.27 = | 112.1 -30.9 | 3.2 +0.6 | 99.3 = | close | + | |
| Eminence KAPPA 12 A | 45 -1.9 | 0.27 = | 112.1 -30.9 | 3.2 +0.6 | 99.3 = | close | + | |
| DAS Audio 12G | 48 +1.1 | 0.267 -0.01 | 148 +5 | 6 +3.4 | 101 +1.7 | close | + | |
| B&C 12PH32 | 42 -4.9 | 0.28 +0.01 | 155 +12 | 3 +0.4 | 97.7 -1.6 | close | + | |
| Eighteen Sound 12ND520 | 50 +3.1 | 0.27 = | 111 -32 | 4 +1.4 | 98.7 -0.6 | close | + | |
| Supravox 285 GMF vp wowo | 50.2 +3.3 | 0.323 +0.05 | 143 = | 3.7 +1.1 | 100.2 +0.9 | close | + |
Compare the closest 3 against the F 356 →
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.