Alpine SWX-1243D Type-X
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 29 Hz |
| Qts | 0.59 |
| Qes | 0.64 |
| Qms | 7.48 |
| Vas | 38 L |
| Sd | 529 cm² |
| Xmax | 10.8 mm |
| Re | 7 Ω |
| Bl | 24.9 T·m |
| Mms | 310.9 g |
| Pe | 1000 W |
| Sensitivity | 84.2 dB |
Alignment hint
| EBP | 45 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 87.1 L |
EBP < 50: favours a sealed (closed) 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 |
|---|---|---|---|---|---|---|---|---|
| American Bass DX 12 | 35.6 +6.6 | 0.6 +0.01 | 41.5 +3.5 | 12 +1.2 | 86.2 +2 | close | 4 Ω vs 8 Ω: amp load changes · 400 W vs 1000 W: lower power handling | + |
| JL Audio 12TW1-4 | 32.35 +3.35 | 0.529 -0.06 | 33.67 -4.33 | 10 -0.8 | 85.15 +0.95 | usable | 4 Ω vs 8 Ω: amp load changes · 300 W vs 1000 W: lower power handling · Xmax 10 mm < 10.8 mm: lower excursion-limited SPL | + |
| Rockford Fosgate T1D412 | 29.2 +0.2 | 0.613 +0.02 | 55.8 +17.8 | 10.9 +0.1 | 85.8 +1.6 | usable | + | |
| Dayton Audio UM12-22 v2017 | 26.2 -2.8 | 0.594 = | 46.8 +8.8 | 9.9 -0.9 | 86.7 +2.5 | usable | 4 Ω vs 8 Ω: amp load changes · 600 W vs 1000 W: lower power handling · Xmax 9.9 mm < 10.8 mm: lower excursion-limited SPL | + |
| Hifonics OLM800D4 | 29 = | 0.525 -0.06 | 41 +3 | 7.5 -3.3 | 84.9 +0.7 | usable | Xmax 7.5 mm < 10.8 mm: lower excursion-limited SPL | + |
| JL Audio 12TW1-2 | 35 +6 | 0.577 -0.01 | 28.54 -9.46 | 10 -0.8 | 85.07 +0.87 | usable | 2 Ω vs 8 Ω: amp load changes · 300 W vs 1000 W: lower power handling · Xmax 10 mm < 10.8 mm: lower excursion-limited SPL | + |
| Pioneer TS-SW124D(PREMIER) | 31.7 +2.7 | 0.55 -0.04 | 28.062 -9.94 | 8.6 -2.2 | 83.9 -0.3 | usable | 4 Ω vs 8 Ω: amp load changes · 300 W vs 1000 W: lower power handling · Xmax 8.6 mm < 10.8 mm: lower excursion-limited SPL | + |
| Alpine SWR-1242D 12 | 29 = | 0.47 -0.12 | 45 +7 | 9.1 -1.7 | 85.7 +1.5 | usable | Xmax 9.1 mm < 10.8 mm: lower excursion-limited SPL | + |
| Orion Audio H2 12.4 | 33.9 +4.9 | 0.61 +0.02 | 28.35 -9.65 | 29 +18.2 | 84.1 -0.1 | usable | + | |
| Rockford Fosgate T0D412 | 26 -3 | 0.529 -0.06 | 55.1 +17.1 | 10.7 -0.1 | 85.3 +1.1 | usable | 700 W vs 1000 W: lower power handling · Xmax 10.7 mm < 10.8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SWX-1243D Type-X →
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.