Morel UW 1258
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 21 Hz |
| Qts | 0.431 |
| Qes | 0.56 |
| Qms | 1.88 |
| Vas | 138.4 L |
| Sd | 437 cm² |
| Xmax | 12.5 mm |
| Re | 6.8 Ω |
| Bl | 13.3 T·m |
| Mms | 111.1 g |
| Pe | 800 W |
| Sensitivity | 86.3 dB |
Alignment hint
| EBP | 37 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 81.8 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 |
|---|---|---|---|---|---|---|---|---|
| Tang Band WQ-1858 | 20 -1 | 0.451 +0.02 | 116 -22.4 | 13.3 +0.8 | 85.3 -1 | close | 500 W vs 800 W: lower power handling | + |
| Visaton TIW 360X | 21 = | 0.34 -0.09 | 140 +1.6 | 12.5 = | 87.3 +1 | close | 300 W vs 800 W: lower power handling | + |
| Peerless XXLS308 SWR 51 | 21.5 +0.5 | 0.448 +0.02 | 162.5 +24.1 | 11.5 -1 | 88.7 +2.4 | close | 175 W vs 800 W: lower power handling · Xmax 11.5 mm < 12.5 mm: lower excursion-limited SPL | + |
| Infinity KAPPA PERFECT 12.1 | 23.32 +2.32 | 0.44 +0.01 | 99.97 -38.43 | 14.15 +1.65 | 86.2 -0.1 | close | 4 Ω vs 8 Ω: amp load changes · 350 W vs 800 W: lower power handling | + |
| Eminence LAB 12 | | 22 +1 | 0.38 -0.05 | 125.2 -13.2 | 13 +0.5 | 89.2 +2.9 | usable | 6 Ω vs 8 Ω: amp load changes · 400 W vs 800 W: lower power handling | + |
| Visaton TIW360X | 21 = | 0.336 -0.09 | 140 +1.6 | 12.2 -0.3 | 88.8 +2.5 | usable | 300 W vs 800 W: lower power handling · Xmax 12.2 mm < 12.5 mm: lower excursion-limited SPL | + |
| Ground Zero GZTW 12MK2 vp | 22.5 +1.5 | 0.484 +0.05 | 148.6 +10.2 | 14.7 +2.2 | 89.9 +3.6 | usable | 400 W vs 800 W: lower power handling | + |
| Dayton Audio RSS315HFA-8 v2016 | 22.2 +1.2 | 0.444 +0.01 | 97.2 -41.2 | 11 -1.5 | 85.8 -0.5 | usable | 400 W vs 800 W: lower power handling · Xmax 11 mm < 12.5 mm: lower excursion-limited SPL | + |
| Kenwood XR-W1204 | 21.5 +0.5 | 0.341 -0.09 | 125.386 -13.01 | 10.8 -1.7 | 87.3 +1 | usable | 4 Ω vs 8 Ω: amp load changes · 400 W vs 800 W: lower power handling · Xmax 10.8 mm < 12.5 mm: lower excursion-limited SPL | + |
| JL Audio 13W6V2-D4 | 24.3 +3.3 | 0.434 = | 111.6 -26.8 | 10.6 -1.9 | 88.3 +2 | usable | 500 W vs 800 W: lower power handling · Xmax 10.6 mm < 12.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the UW 1258 →
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.