Eminence ALPHA 12A
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 49 Hz |
| Qts | 0.77 |
| Qes | 0.88 |
| Qms | 6.53 |
| Vas | 121.5 L |
| Sd | 520 cm² |
| Xmax | 2.4 mm |
| Re | 6.26 Ω |
| Bl | 8.5 T·m |
| Mms | 33 g |
| Pe | 75 W |
| Sensitivity | 93.9 dB |
Alignment hint
| EBP | 56 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
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 |
|---|---|---|---|---|---|---|---|---|
| Eminence ALPHA 12 | 49 = | 0.775 +0.01 | 121.5 = | 2.4 = | 95.1 +1.2 | close | + | |
| Eminence ALPHA 12 A | 49 = | 0.775 +0.01 | 121.5 = | 2.4 = | 95.1 +1.2 | close | + | |
| Eminence ALPHA-12A | 49 = | 0.77 = | 121.5 = | 2.4 = | 95.6 +1.7 | close | + | |
| Fane SOVEREIGN 12-125 | 47 -2 | 0.796 +0.03 | 113.2 -8.3 | 4.9 +2.5 | 93.8 -0.1 | close | + | |
| Audax PR300T0 | 48 -1 | 0.824 +0.05 | 142 +20.5 | 3.5 +1.1 | 95.4 +1.5 | close | + | |
| Visaton WS32AW vp de FREDO51 | 39 -10 | 0.765 -0.01 | 115 -6.5 | 5 +2.6 | 91.5 -2.4 | usable | + | |
| AE Speakers LO12-D16 | 41.9 -7.1 | 0.67 -0.1 | 119.7 -1.8 | 7.4 +5 | 94.1 +0.2 | usable | + | |
| Monacor SP-302E | 39 -10 | 0.722 -0.05 | 141 +19.5 | 4 +1.6 | 95.3 +1.4 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Infinity 1200WIB vp | 35 -14 | 0.789 +0.02 | 116 -5.5 | 5.1 +2.7 | 92.8 -1.1 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Cabasse 30BZ18 v2 | 38.5 -10.5 | 0.747 -0.02 | 154.7 +33.2 | 4 +1.6 | 92.8 -1.1 | usable | + |
Compare the closest 3 against the ALPHA 12A →
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.