MCM Electronics 55-1255
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 35 Hz |
| Qts | 0.554 |
| Qes | 0.76 |
| Qms | 2.05 |
| Vas | 197.6 L |
| Sd | 517 cm² |
| Xmax | 3.5 mm |
| Re | 7.1 Ω |
| Bl | 9 T·m |
| Mms | 39.2 g |
| Pe | 80 W |
| Sensitivity | 93 dB |
Alignment hint
| EBP | 46 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 314.1 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 |
|---|---|---|---|---|---|---|---|---|
| Cabasse 30BZ24 vp oriu2 | 37 +2 | 0.543 -0.01 | 223 +25.4 | 4 +0.5 | 93.6 +0.6 | close | 16 Ω vs 8 Ω: amp load changes | + |
| Davis 31TCA12 vp rc1 d | 35 = | 0.53 -0.02 | 169.8 -27.8 | 6 +2.5 | 93.2 +0.2 | close | + | |
| Visaton W300 | 32 -3 | 0.549 -0.01 | 190 -7.6 | 7 +3.5 | 92.2 -0.8 | close | + | |
| PHY-HP HB30LB15 | 36 +1 | 0.567 +0.01 | 224 +26.4 | 3 -0.5 | 91.9 -1.1 | close | 16 Ω vs 8 Ω: amp load changes · 50 W vs 80 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL | + |
| PHY-HP HB30LB15SAG | 36 +1 | 0.567 +0.01 | 224 +26.4 | 3 -0.5 | 91.9 -1.1 | close | 16 Ω vs 8 Ω: amp load changes · 50 W vs 80 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL | + |
| PHY-HP KM30 | 36 +1 | 0.567 +0.01 | 224 +26.4 | 3 -0.5 | 91.9 -1.1 | close | 16 Ω vs 8 Ω: amp load changes · 50 W vs 80 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL | + |
| PHY-HP KM30SAG | 36 +1 | 0.567 +0.01 | 224 +26.4 | 3 -0.5 | 91.9 -1.1 | close | 16 Ω vs 8 Ω: amp load changes · 50 W vs 80 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL | + |
| EMS LB12 MKII vp JTR2 | 37.7 +2.7 | 0.548 -0.01 | 173.7 -23.9 | 3 -0.5 | 93.9 +0.9 | close | 40 W vs 80 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL | + |
| Eminence ACOUSTINATOR N2012 | 31 -4 | 0.518 -0.04 | 177 -20.6 | 3.9 +0.4 | 92.4 -0.6 | close | + | |
| Audax PR300T4 série vp | 37 +2 | 0.519 -0.04 | 220 +22.4 | 4 +0.5 | 95.6 +2.6 | close | + |
Compare the closest 3 against the 55-1255 →
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.