Supravox 400 GN-B
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 28.5 Hz |
| Qts | 0.272 |
| Qes | 0.28 |
| Qms | 9 |
| Vas | 450 L |
| Sd | 855 cm² |
| Xmax | 5 mm |
| Re | 6.5 Ω |
| Bl | 17.2 T·m |
| Mms | 71 g |
| Pe | 120 W |
| Sensitivity | 98.6 dB |
Alignment hint
| EBP | 102 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 78.1 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 |
|---|---|---|---|---|---|---|---|---|
| Altec 515-8LF | 27.4 -1.1 | 0.255 -0.02 | 470.1 +20.1 | 5.1 +0.1 | 98.4 -0.2 | close | + | |
| Great Plains Audio 515-8LF GPA | 27.4 -1.1 | 0.255 -0.02 | 470.1 +20.1 | 5.1 +0.1 | 98.4 -0.2 | close | + | |
| Iconic Speakers 704-8A | 30.9 +2.4 | 0.262 -0.01 | 463 +13 | 5.1 +0.1 | 99.7 +1.1 | close | + | |
| Beyma SM115/N | 29 +0.5 | 0.291 +0.02 | 430 -20 | 7.3 +2.3 | 98.3 -0.3 | close | + | |
| Usher Audio 15HM Studio | 27 -1.5 | 0.28 +0.01 | 385 -65 | 5.9 +0.9 | 98 -0.6 | close | + | |
| Great Plains Audio 515-8C GPA | 27.8 -0.7 | 0.299 +0.03 | 422.5 -27.5 | 4.7 -0.3 | 97.6 -1 | close | 75 W vs 120 W: lower power handling · Xmax 4.7 mm < 5 mm: lower excursion-limited SPL | + |
| Davis 40RCA15 vp2 | 26.6 -1.9 | 0.309 +0.04 | 410 -40 | 5 = | 98.6 = | close | + | |
| Kenwood TRIO | 27 -1.5 | 0.27 = | 350 -100 | 5 = | 97.4 -1.2 | close | + | |
| Davis 38RCA15 | 29 +0.5 | 0.24 -0.03 | 373 -77 | 5 = | 98.2 -0.4 | close | + | |
| Davis 40RCA15 | 27 -1.5 | 0.282 +0.01 | 350 -100 | 5 = | 97.7 -0.9 | close | + |
Compare the closest 3 against the 400 GN-B →
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.