Eminence BETA 12A2
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 47 Hz |
| Qts | 0.462 |
| Qes | 0.5 |
| Qms | 6 |
| Vas | 120.1 L |
| Sd | 538.9 cm² |
| Xmax | 4.4 mm |
| Re | 5 Ω |
| Bl | 10.7 T·m |
| Mms | 38.9 g |
| Pe | 250 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 94 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 89.5 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 |
|---|---|---|---|---|---|---|---|---|
| Eminence BETA 12A | 47 = | 0.462 = | 120 -0.1 | 4.4 = | 98 = | close | + | |
| Eminence BETA-12A | 47 = | 0.46 = | 120.1 = | 4.4 = | 98 = | close | + | |
| MCM Electronics 55-3233 | 42 -5 | 0.459 = | 122.6 +2.5 | 4.9 +0.5 | 98 = | close | 4 Ω vs 8 Ω: amp load changes · 120 W vs 250 W: lower power handling | + |
| Davis 31TCA12 vp3 | 49.1 +2.1 | 0.452 -0.01 | 115.6 -4.5 | 5.6 +1.2 | 97.3 -0.7 | close | + | |
| Eminence BETA 12CX v2019 | 47 = | 0.476 +0.01 | 120.9 +0.8 | 3.5 -0.9 | 97.5 -0.5 | close | Xmax 3.5 mm < 4.4 mm: lower excursion-limited SPL | + |
| Davis 31TCA12 vp2 | 46.4 -0.6 | 0.449 -0.01 | 113.1 -7 | 5.7 +1.3 | 96.4 -1.6 | close | + | |
| Eminence BETA 12CX | 47 = | 0.48 +0.02 | 120.94 +0.84 | 3.5 -0.9 | 97.3 -0.7 | close | Xmax 3.5 mm < 4.4 mm: lower excursion-limited SPL | + |
| Davis 31TCA12 vp | 49.1 +2.1 | 0.459 = | 107.8 -12.3 | 5.5 +1.1 | 96.9 -1.1 | close | + | |
| Fane SOVEREIGN 12-200 | 45 -2 | 0.443 -0.02 | 104.8 -15.3 | 5.5 +1.1 | 97 -1 | close | + | |
| Eminence BETA 12 | 50 +3 | 0.519 +0.06 | 114.7 -5.4 | 4.4 = | 96.5 -1.5 | close | + |
Compare the closest 3 against the BETA 12A2 →
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.