Fostex L 345
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 34 Hz |
| Qts | 0.242 |
| Qes | 0.26 |
| Qms | 3.4 |
| Vas | 197 L |
| Sd | 530 cm² |
| Xmax | 5.7 mm |
| Re | 7 Ω |
| Bl | 15.9 T·m |
| Mms | 43.8 g |
| Pe | 150 W |
| Sensitivity | 97.3 dB |
Alignment hint
| EBP | 131 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 26.1 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma SM212 | 34 = | 0.258 +0.02 | 198 +1 | 8.2 +2.5 | 98 +0.7 | close | + | |
| Monacor SP-330PAX | 33 -1 | 0.238 = | 190 -7 | 4.5 -1.2 | 97.4 +0.1 | close | Xmax 4.5 mm < 5.7 mm: lower excursion-limited SPL | + |
| RCF L 12P400K | 34 = | 0.241 = | 130 -67 | 6 +0.3 | 96.3 -1 | close | + | |
| AE Speakers TD12M | 38.1 +4.1 | 0.25 +0.01 | 140 -57 | 6 +0.3 | 97.3 = | usable | + | |
| Beyma 12K200 v1 | 35 +1 | 0.225 -0.02 | 160 -37 | 4.5 -1.2 | 97.8 +0.5 | usable | Xmax 4.5 mm < 5.7 mm: lower excursion-limited SPL | + |
| Cabasse 30M22 | 31.5 -2.5 | 0.315 +0.07 | 196.1 -0.9 | 8 +2.3 | 97.7 +0.4 | usable | + | |
| AE Speakers TD12X | 33.9 -0.1 | 0.284 +0.04 | 159.4 -37.6 | 7 +1.3 | 95.4 -1.9 | usable | + | |
| RCF L12P400K | 33.7 -0.3 | 0.25 +0.01 | 130 -67 | 6 +0.3 | 94.7 -2.6 | usable | + | |
| Davis 31TCA12 v2009 | 32.5 -1.5 | 0.31 +0.07 | 222 +25 | 6 +0.3 | 95.9 -1.4 | usable | + | |
| Davis 31TCA12 vp rc | 32.5 -1.5 | 0.314 +0.07 | 222 +25 | 6 +0.3 | 96.2 -1.1 | usable | + |
Compare the closest 3 against the L 345 →
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.