CSS Audio SDX12 DVC
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 21.3 Hz |
| Qts | 0.375 |
| Qes | 0.414 |
| Qms | 3.962 |
| Vas | 67.5 L |
| Sd | 491 cm² |
| Xmax | 13.4 mm |
| Re | 3.7 Ω |
| Bl | 18.3 T·m |
| Mms | 279.5 g |
| Pe | 800 W |
| Sensitivity | 87.3 dB |
Alignment hint
| EBP | 51 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 26.4 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 |
|---|---|---|---|---|---|---|---|---|
| RE Audio XXX12-V2-4 | 21 -0.3 | 0.404 +0.03 | 73.9 +6.4 | 13.5 +0.1 | 86.5 -0.8 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Dayton Audio RSS315HO-44 v2016 | 21.5 +0.2 | 0.369 -0.01 | 61.3 -6.2 | 11.3 -2.1 | 84.6 -2.7 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 11.3 mm < 13.4 mm: lower excursion-limited SPL | + |
| Dayton Audio RSS315HO-44 | 20.9 -0.4 | 0.382 +0.01 | 60.1 -7.4 | 11.5 -1.9 | 89.9 +2.6 | close | 2 Ω vs 4 Ω: amp load changes · Xmax 11.5 mm < 13.4 mm: lower excursion-limited SPL | + |
| Infinity REFERENCE 1260W | 23.5 +2.2 | 0.39 +0.02 | 83 +15.5 | 13 -0.4 | 86 -1.3 | close | 300 W vs 800 W: lower power handling · Xmax 13 mm < 13.4 mm: lower excursion-limited SPL | + |
| Oxygen AIR2 300 v2015 | 22.7 +1.4 | 0.388 +0.01 | 78 +10.5 | 9.9 -3.5 | 89.1 +1.8 | usable | 300 W vs 800 W: lower power handling · Xmax 9.9 mm < 13.4 mm: lower excursion-limited SPL | + |
| Eclipse 8712.8 | 20 -1.3 | 0.39 +0.02 | 84.95 +17.45 | 18.5 +5.1 | 84.1 -3.2 | usable | 8 Ω vs 4 Ω: amp load changes · 200 W vs 800 W: lower power handling | + |
| Morel ULTIMO 124 | 26 +4.7 | 0.421 +0.05 | 73.8 +6.3 | 14.6 +1.2 | 89 +1.7 | usable | + | |
| Rockford Fosgate RFR2212 | 24 +2.7 | 0.376 = | 93 +25.5 | 13 -0.4 | 90.5 +3.2 | usable | Xmax 13 mm < 13.4 mm: lower excursion-limited SPL | + |
| JL Audio 12W6V2-D4 | 25 +3.7 | 0.45 +0.08 | 79.9 +12.4 | 12.7 -0.7 | 86.9 -0.4 | usable | 8 Ω vs 4 Ω: amp load changes · 600 W vs 800 W: lower power handling · Xmax 12.7 mm < 13.4 mm: lower excursion-limited SPL | + |
| Alpine SWG-1244 | 28 +6.7 | 0.38 +0.01 | 75 +7.5 | 10 -3.4 | 87.7 +0.4 | usable | 250 W vs 800 W: lower power handling · Xmax 10 mm < 13.4 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SDX12 DVC →
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.