Jensen RS12045SW
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 4 Ω |
| Fs | 25 Hz |
| Qts | 0.3 |
| Qes | 0.31 |
| Qms | 9.71 |
| Vas | 220 L |
| Sd | 498 cm² |
| Xmax | 11 mm |
| Re | 3.86 Ω |
| Bl | 11.2 T·m |
| Mms | 64 g |
| Pe | 250 W |
| Sensitivity | 95.6 dB |
Alignment hint
| EBP | 81 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 48.3 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 |
|---|---|---|---|---|---|---|---|---|
| Audiotechnology FLEXUNIT 12B772510 | 25 = | 0.299 = | 250 +30 | 8.6 -2.4 | 94.3 -1.3 | close | 8 Ω vs 4 Ω: amp load changes · Xmax 8.6 mm < 11 mm: lower excursion-limited SPL | + |
| Rockford Fosgate S1-124 | 28 +3 | 0.326 +0.03 | 186 -34 | 9.9 -1.1 | 96.2 +0.6 | usable | Xmax 9.9 mm < 11 mm: lower excursion-limited SPL | + |
| Focal 12V 726DB | 25.9 +0.9 | 0.354 +0.05 | 210.5 -9.5 | 8.5 -2.5 | 96 +0.4 | usable | 150 W vs 250 W: lower power handling · Xmax 8.5 mm < 11 mm: lower excursion-limited SPL | + |
| Westra SW-300-2808 | 30 +5 | 0.322 +0.02 | 209 -11 | 9.3 -1.7 | 94.7 -0.9 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 9.3 mm < 11 mm: lower excursion-limited SPL | + |
| Axon 12K01 | 25 = | 0.289 -0.01 | 191.8 -28.2 | 6.7 -4.3 | 95.4 -0.2 | usable | 125 W vs 250 W: lower power handling · Xmax 6.7 mm < 11 mm: lower excursion-limited SPL | + |
| Visaton TIW300 | 25 = | 0.282 -0.02 | 160 -60 | 9.7 -1.3 | 92.9 -2.7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 9.7 mm < 11 mm: lower excursion-limited SPL | + |
| SB Acoustics SB34NRXL75-8 | 22 -3 | 0.275 -0.02 | 205 -15 | 9.6 -1.4 | 91.9 -3.7 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 9.6 mm < 11 mm: lower excursion-limited SPL | + |
| Visaton WS33NG | 30 +5 | 0.308 +0.01 | 190 -30 | 8 -3 | 94.5 -1.1 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 8 mm < 11 mm: lower excursion-limited SPL | + |
| Fostex SLE 30 W | 22 -3 | 0.302 = | 293 +73 | 9.5 -1.5 | 92.8 -2.8 | usable | 8 Ω vs 4 Ω: amp load changes · 160 W vs 250 W: lower power handling · Xmax 9.5 mm < 11 mm: lower excursion-limited SPL | + |
| Visaton TD1 | 30.3 +5.3 | 0.327 +0.03 | 200 -20 | 7.6 -3.4 | 95.3 -0.3 | usable | 8 Ω vs 4 Ω: amp load changes · 150 W vs 250 W: lower power handling · Xmax 7.6 mm < 11 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the RS12045SW →
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.