Alpine SWE-1242
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 31 Hz |
| Qts | 0.66 |
| Qes | 0.708 |
| Qms | 9.68 |
| Vas | 61 L |
| Sd | 491 cm² |
| Xmax | 11.7 mm |
| Re | 3.6 Ω |
| Bl | 12.08 T·m |
| Mms | 147.3 g |
| Pe | 250 W |
| Sensitivity | 85.9 dB |
Alignment hint
| EBP | 44 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 412.6 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 |
|---|---|---|---|---|---|---|---|---|
| Soundstream STEALTH-124 | 29.98 -1.02 | 0.687 +0.03 | 59.5 -1.5 | 13 +1.3 | 84.8 -1.1 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Alpine SWE-1241 | 31 = | 0.653 -0.01 | 61 = | 11.3 -0.4 | 89.6 +3.7 | close | Xmax 11.3 mm < 11.7 mm: lower excursion-limited SPL | + |
| JL Audio 12W0V3-4 | 32.09 +1.09 | 0.67 +0.01 | 71.64 +10.64 | 11.4 -0.3 | 85.64 -0.26 | close | Xmax 11.4 mm < 11.7 mm: lower excursion-limited SPL | + |
| Rockford Fosgate T1D412 | 29.2 -1.8 | 0.613 -0.05 | 55.8 -5.2 | 10.9 -0.8 | 85.8 -0.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 10.9 mm < 11.7 mm: lower excursion-limited SPL | + |
| Infinity Kappa 123WDSSI 2Ohm | 34.2 +3.2 | 0.778 +0.12 | 58.6153 -2.38 | 10.2 -1.5 | 86.0429 +0.14 | usable | 2 Ω vs 4 Ω: amp load changes · Xmax 10.2 mm < 11.7 mm: lower excursion-limited SPL | + |
| Rockford Fosgate R2SD4-12 | 30.3 -0.7 | 0.653 -0.01 | 65.4 +4.4 | 6.9 -4.8 | 86.7 +0.8 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 6.9 mm < 11.7 mm: lower excursion-limited SPL | + |
| Pioneer TS-W251R | 28.9 -2.1 | 0.68 +0.02 | 57.86 -3.14 | 7.8 -3.9 | 84.6 -1.3 | usable | 120 W vs 250 W: lower power handling · Xmax 7.8 mm < 11.7 mm: lower excursion-limited SPL | + |
| Cerwin-Vega VEGA 124 | 30.3 -0.7 | 0.612 -0.05 | 60.3 -0.7 | 7 -4.7 | 86.4 +0.5 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 11.7 mm: lower excursion-limited SPL | + |
| JL Audio 12W0V3-4 | 28.4 -2.6 | 0.67 +0.01 | 71.6 +10.6 | 9.3 -2.4 | 88.3 +2.4 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 9.3 mm < 11.7 mm: lower excursion-limited SPL | + |
| Hertz Audio ES 300.5 | 35 +4 | 0.66 = | 48.5 -12.5 | 9 -2.7 | 86.6 +0.7 | usable | Xmax 9 mm < 11.7 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SWE-1242 →
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.