Beyma 12CX
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 42 Hz |
| Qts | 0.34 |
| Qes | 0.38 |
| Qms | 3.5 |
| Vas | 146.4 L |
| Sd | 540 cm² |
| Xmax | 2 mm |
| Re | 5.7 Ω |
| Bl | 13 T·m |
| Mms | 43 g |
| Pe | 100 W |
| Sensitivity | 96.4 dB |
Alignment hint
| EBP | 111 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 44 L |
EBP > 100: favours a ported (bass-reflex) 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 |
|---|---|---|---|---|---|---|---|---|
| Goodmans AXIOM 401 | 40.3 -1.7 | 0.344 = | 181.2 +34.8 | 2.5 +0.5 | 97 +0.6 | close | 40 W vs 100 W: lower power handling | + |
| Hyper Phase CM12 | 40 -2 | 0.372 +0.03 | 135 -11.4 | 3.5 +1.5 | 96.3 -0.1 | close | + | |
| Beyma 12XM | 42 = | 0.348 +0.01 | 125 -21.4 | 4 +2 | 97.9 +1.5 | close | + | |
| Monacor SP-30A/200PRO | 45 +3 | 0.332 -0.01 | 114 -32.4 | 2 = | 98 +1.6 | close | + | |
| B&C 12PH32 | 42 = | 0.28 -0.06 | 155 +8.6 | 3 +1 | 97.7 +1.3 | close | + | |
| Monacor SP-30/200PA | 44 +2 | 0.386 +0.05 | 120 -26.4 | 2.5 +0.5 | 96.8 +0.4 | close | + | |
| Goodmans AXIOM 201 | 42.5 +0.5 | 0.421 +0.08 | 157.7 +11.3 | 2.5 +0.5 | 97.5 +1.1 | close | 30 W vs 100 W: lower power handling | + |
| Eminence DELTALITE II 2512 v2 | 37 -5 | 0.386 +0.05 | 147 +0.6 | 4.9 +2.9 | 96.3 -0.1 | usable | + | |
| Beyma SM212 v2009 | 40 -2 | 0.373 +0.03 | 150 +3.6 | 8.2 +6.2 | 97.2 +0.8 | usable | + | |
| Eminence DELTA PRO 12-450A | 44 +2 | 0.371 +0.03 | 141.7 -4.7 | 5.2 +3.2 | 98.9 +2.5 | usable | + |
Compare the closest 3 against the 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.