Fostex 15W-300
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 31 Hz |
| Qts | 0.26 |
| Qes | 0.269 |
| Qms | 8.2 |
| Vas | 262 L |
| Sd | 890 cm² |
| Xmax | 4 mm |
| Re | 6.8 Ω |
| Bl | 23.5 T·m |
| Mms | 111.7 g |
| Pe | 200 W |
| Sensitivity | 97.3 dB |
Alignment hint
| EBP | 115 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 41 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 |
|---|---|---|---|---|---|---|---|---|
| Fostex L 469 | 30 -1 | 0.271 +0.01 | 259 -3 | 4 = | 96.7 -0.6 | close | 150 W vs 200 W: lower power handling | + |
| Coral 15L100 | 29 -2 | 0.256 = | 265.7 +3.7 | 3.6 -0.4 | 97.6 +0.3 | close | 100 W vs 200 W: lower power handling · Xmax 3.6 mm < 4 mm: lower excursion-limited SPL | + |
| Gauss 4583A v2 | 31 = | 0.292 +0.03 | 283 +21 | 4 = | 97.9 +0.6 | close | 150 W vs 200 W: lower power handling | + |
| Eminence MAGNUM 15 HO | 33 +2 | 0.27 +0.01 | 241 -21 | 4.8 +0.8 | 97.9 +0.6 | close | + | |
| Mercuriale PTR 385 M0 | 33 +2 | 0.264 = | 252 -10 | 3.5 -0.5 | 98.2 +0.9 | close | Xmax 3.5 mm < 4 mm: lower excursion-limited SPL | + |
| Audax PR38S100VST vp M | 30.3 -0.7 | 0.285 +0.02 | 234 -28 | 4 = | 96.8 -0.5 | close | + | |
| Beyma SM115/K | 29 -2 | 0.249 -0.01 | 273 +11 | 8 +4 | 97.2 -0.1 | close | + | |
| Beyma 15 XT | 33 +2 | 0.289 +0.03 | 270 +8 | 5 +1 | 98 +0.7 | close | + | |
| JBL 1500 AL | 27.3 -3.7 | 0.274 +0.01 | 264.6 +2.6 | 5.5 +1.5 | 96.5 -0.8 | close | + | |
| Beyma 15BR400 | 30 -1 | 0.236 -0.02 | 274 +12 | 6 +2 | 98.3 +1 | close | + |
Compare the closest 3 against the 15W-300 →
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.