Beyma 12G125
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 41 Hz |
| Qts | 0.269 |
| Qes | 0.31 |
| Qms | 2.01 |
| Vas | 122 L |
| Sd | 510 cm² |
| Xmax | 4 mm |
| Re | 6.5 Ω |
| Bl | 15.6 T·m |
| Mms | 45 g |
| Pe | 125 W |
| Sensitivity | 97.2 dB |
Alignment hint
| EBP | 132 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 20.6 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 12CXA400FE | 42 +1 | 0.251 -0.02 | 119 -3 | 6 +2 | 98.1 +0.9 | close | + | |
| Beyma SM112-N2 | 40 -1 | 0.298 +0.03 | 117.3 -4.7 | 5.9 +1.9 | 96.9 -0.3 | close | + | |
| Dayton Audio APOLLO 12N | 38 -3 | 0.261 -0.01 | 128.1 +6.1 | 6.8 +2.8 | 96.4 -0.8 | close | + | |
| Beyma SM112/N | 38 -3 | 0.27 = | 138 +16 | 7.3 +3.3 | 97.2 = | close | + | |
| Eminence Kappa Pro-12A | 37 -4 | 0.24 -0.03 | 121 -1 | 4.8 +0.8 | 97.1 -0.1 | close | + | |
| Beyma SM112/N v2021 | 40 -1 | 0.298 +0.03 | 117 -5 | 7 +3 | 96.9 -0.3 | close | + | |
| PHL Audio 4500 | 42 +1 | 0.274 +0.01 | 108 -14 | 5.7 +1.7 | 99 +1.8 | close | + | |
| P.Audio C12-300MB v2012 | 41 = | 0.265 = | 99.2 -22.8 | 3.5 -0.5 | 97.6 +0.4 | close | Xmax 3.5 mm < 4 mm: lower excursion-limited SPL | + |
| Eminence KAPPA PRO 12 | 37 -4 | 0.241 -0.03 | 121 -1 | 4.8 +0.8 | 97.5 +0.3 | close | + | |
| Eminence KL3012CX-8 | 42 +1 | 0.299 +0.03 | 111.5 -10.5 | 3.7 -0.3 | 97.7 +0.5 | close | Xmax 3.7 mm < 4 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 12G125 →
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.