Supravox 400 GMF PRO
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 32 Hz |
| Qts | 0.263 |
| Qes | 0.27 |
| Qms | 9.5 |
| Vas | 370 L |
| Sd | 855 cm² |
| Xmax | 4.8 mm |
| Re | 6.5 Ω |
| Bl | 18.2 T·m |
| Mms | 68.5 g |
| Pe | 120 W |
| Sensitivity | 99.4 dB |
Alignment hint
| EBP | 119 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 59.4 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 |
|---|---|---|---|---|---|---|---|---|
| Benett 15.200 Z/N | 32.9 +0.9 | 0.265 = | 344 -26 | 5 +0.2 | 100.1 +0.7 | close | + | |
| Beyma 15XA38ND | 33 +1 | 0.288 +0.02 | 359 -11 | 6 +1.2 | 99 -0.4 | close | + | |
| Iconic Speakers 704-8A | 30.9 -1.1 | 0.262 = | 463 +93 | 5.1 +0.3 | 99.7 +0.3 | close | + | |
| Davis 39RPA15 | 31 -1 | 0.27 +0.01 | 340 -30 | 4 -0.8 | 99.3 -0.1 | close | Xmax 4 mm < 4.8 mm: lower excursion-limited SPL | + |
| Focal AUDIOM 15 | 32.5 +0.5 | 0.236 -0.03 | 379.7 +9.7 | 6 +1.2 | 100.4 +1 | close | + | |
| Focal AUDIOM 15B | 31.6 -0.4 | 0.282 +0.02 | 330 -40 | 6 +1.2 | 98.8 -0.6 | close | + | |
| Beyma 15LW30 | 32 = | 0.28 +0.02 | 325 -45 | 7 +2.2 | 98.8 -0.6 | close | + | |
| Monacor SP-385PAX | 30 -2 | 0.285 +0.02 | 365 -5 | 4.5 -0.3 | 98 -1.4 | close | Xmax 4.5 mm < 4.8 mm: lower excursion-limited SPL | + |
| Davis 38RCA15 | 29 -3 | 0.24 -0.02 | 373 +3 | 5 +0.2 | 98.2 -1.2 | close | + | |
| Altec 921-8A | 34.1 +2.1 | 0.257 -0.01 | 299 -71 | 5.2 +0.4 | 100.1 +0.7 | close | + |
Compare the closest 3 against the 400 GMF PRO →
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.