Pioneer TS-W251R
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 28.9 Hz |
| Qts | 0.68 |
| Qes | 0.735 |
| Qms | 9.13 |
| Vas | 57.86 L |
| Sd | 338 cm² |
| Xmax | 7.8 mm |
| Re | 3.58 Ω |
| Bl | 8.65 T·m |
| Mms | 84.7 g |
| Pe | 120 W |
| Sensitivity | 84.6 dB |
Alignment hint
| EBP | 39 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 711.6 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 +1.08 | 0.687 +0.01 | 59.5 +1.64 | 13 +5.2 | 84.8 +0.2 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Alpine SWE-1242 | 31 +2.1 | 0.66 -0.02 | 61 +3.14 | 11.7 +3.9 | 85.9 +1.3 | close | + | |
| Rockford Fosgate T1D412 | 29.2 +0.3 | 0.613 -0.07 | 55.8 -2.06 | 10.9 +3.1 | 85.8 +1.2 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Cerwin-Vega VEGA 124 | 30.3 +1.4 | 0.612 -0.07 | 60.3 +2.44 | 7 -0.8 | 86.4 +1.8 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7 mm < 7.8 mm: lower excursion-limited SPL | + |
| Rockford Fosgate R2SD4-12 | 30.3 +1.4 | 0.653 -0.03 | 65.4 +7.54 | 6.9 -0.9 | 86.7 +2.1 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 6.9 mm < 7.8 mm: lower excursion-limited SPL | + |
| Wavecor SW310WA01 | 28.5 -0.4 | 0.603 -0.08 | 65.5 +7.64 | 7.6 -0.2 | 86.8 +2.2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.6 mm < 7.8 mm: lower excursion-limited SPL | + |
| Ground Zero GZIW 300X | 34.9 +6 | 0.69 +0.01 | 53.6 -4.26 | 7.5 -0.3 | 86.6 +2 | close | Xmax 7.5 mm < 7.8 mm: lower excursion-limited SPL | + |
| Wavecor SW312WA04 | 29 +0.1 | 0.569 -0.11 | 61 +3.14 | 7.5 -0.3 | 86.8 +2.2 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 7.5 mm < 7.8 mm: lower excursion-limited SPL | + |
| JL Audio 12W0V3-4 | 32.09 +3.19 | 0.67 -0.01 | 71.64 +13.78 | 11.4 +3.6 | 85.64 +1.04 | close | + | |
| JL Audio 12W0V3-4 | 28.4 -0.5 | 0.67 -0.01 | 71.6 +13.74 | 9.3 +1.5 | 88.3 +3.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the TS-W251R →
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.