Dayton Audio SD315-88
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 26.9 Hz |
| Qts | 0.342 |
| Qes | 0.38 |
| Qms | 3.44 |
| Vas | 122.8 L |
| Sd | 522.8 cm² |
| Xmax | 5.5 mm |
| Re | 3 Ω |
| Bl | 12.1 T·m |
| Mms | 109.2 g |
| Pe | 120 W |
| Sensitivity | 94.2 dB |
Alignment hint
| EBP | 71 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 37.5 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Dayton Audio QU4TRO 12" | 27 +0.1 | 0.357 +0.01 | 120.1 -2.7 | 8.7 +3.2 | 93.6 -0.6 | close | + | |
| Dali A-12WD vp | 27 +0.1 | 0.328 -0.01 | 121 -1.8 | 8.8 +3.3 | 93.3 -0.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| JBL LCS1250W | 27.4 +0.5 | 0.331 -0.01 | 109 -13.8 | 5.3 -0.2 | 93.5 -0.7 | close | Xmax 5.3 mm < 5.5 mm: lower excursion-limited SPL | + |
| Oxygen IN12 300 | 27 +0.1 | 0.362 +0.02 | 114.8 -8 | 8.7 +3.2 | 93.2 -1 | close | + | |
| Focal AUDIOM 13KX | 28.8 +1.9 | 0.328 -0.01 | 127 +4.2 | 6 +0.5 | 92.3 -1.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Helix HXS 1206 | 25 -1.9 | 0.337 -0.01 | 107 -15.8 | 7 +1.5 | 93.6 -0.6 | close | + | |
| Dayton Audio ST305-8 | 29.6 +2.7 | 0.348 +0.01 | 128.1 +5.3 | 8 +2.5 | 92.9 -1.3 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Atohm D300P04 | 26.5 -0.4 | 0.33 -0.01 | 104 -18.8 | 7 +1.5 | 93 -1.2 | close | + | |
| Eton 12-612-C8/62RP | 28 +1.1 | 0.319 -0.02 | 134 +11.2 | 6.3 +0.8 | 92.5 -1.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Audio Dynamique 320/75 | 32 +5.1 | 0.341 = | 116 -6.8 | 5 -0.5 | 93.8 -0.4 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SD315-88 →
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.