Eminence BETA 12CX
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 47 Hz |
| Qts | 0.48 |
| Qes | 0.52 |
| Qms | 5.64 |
| Vas | 120.94 L |
| Sd | 538.9 cm² |
| Xmax | 3.5 mm |
| Re | 5.42 Ω |
| Bl | 10.79 T·m |
| Mms | 38 g |
| Pe | 250 W |
| Sensitivity | 97.3 dB |
Alignment hint
| EBP | 90 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 103.4 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 12CX v2019 | 47 = | 0.476 = | 120.9 -0.04 | 3.5 = | 97.5 +0.2 | close | + | |
| Eminence BETA 12A2 | 47 = | 0.462 -0.02 | 120.1 -0.84 | 4.4 +0.9 | 98 +0.7 | close | + | |
| Eminence BETA 12A | 47 = | 0.462 -0.02 | 120 -0.94 | 4.4 +0.9 | 98 +0.7 | close | + | |
| Eminence BETA-12A | 47 = | 0.46 -0.02 | 120.1 -0.84 | 4.4 +0.9 | 98 +0.7 | close | + | |
| Davis 31TCA12 vp3 | 49.1 +2.1 | 0.452 -0.03 | 115.6 -5.34 | 5.6 +2.1 | 97.3 = | close | + | |
| MCM Electronics 55-3233 | 42 -5 | 0.459 -0.02 | 122.6 +1.66 | 4.9 +1.4 | 98 +0.7 | close | 4 Ω vs 8 Ω: amp load changes · 120 W vs 250 W: lower power handling | + |
| Davis 31TCA12 vp2 | 46.4 -0.6 | 0.449 -0.03 | 113.1 -7.84 | 5.7 +2.2 | 96.4 -0.9 | close | + | |
| Eminence BETA 12 | 50 +3 | 0.519 +0.04 | 114.7 -6.24 | 4.4 +0.9 | 96.5 -0.8 | close | + | |
| Davis 31TCA12 vp | 49.1 +2.1 | 0.459 -0.02 | 107.8 -13.14 | 5.5 +2 | 96.9 -0.4 | close | + | |
| B&C 12 HPL 51 | 51 +4 | 0.479 = | 96 -24.94 | 4 +0.5 | 97.3 = | close | 150 W vs 250 W: lower power handling | + |
Compare the closest 3 against the BETA 12CX →
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.