Beyma 12G40
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 44 Hz |
| Qts | 0.292 |
| Qes | 0.3 |
| Qms | 11.6 |
| Vas | 81 L |
| Sd | 530 cm² |
| Xmax | 6 mm |
| Re | 6 Ω |
| Bl | 18.8 T·m |
| Mms | 63.6 g |
| Pe | 500 W |
| Sensitivity | 96.8 dB |
Alignment hint
| EBP | 147 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 16.7 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 12"G40 | 44 = | 0.3 +0.01 | 81 = | 7 +1 | 97 +0.2 | close | + | |
| Beyma 12WRS400 | 42 -2 | 0.29 = | 91 +10 | 6.3 +0.3 | 97 +0.2 | close | + | |
| Beyma 12WR400 | 42 -2 | 0.285 -0.01 | 91.1 +10.1 | 6.3 +0.3 | 96.9 +0.1 | close | + | |
| Beyma 12LW30/N v2015 | 42 -2 | 0.269 -0.02 | 84 +3 | 6.1 +0.1 | 96.3 -0.5 | close | + | |
| Ciare NDC 12-3 | 45.5 +1.5 | 0.285 -0.01 | 73.6 -7.4 | 5.4 -0.6 | 97 +0.2 | close | Xmax 5.4 mm < 6 mm: lower excursion-limited SPL | + |
| Beyma 12"WR400 | 42 -2 | 0.27 -0.02 | 91 +10 | 6.3 +0.3 | 97 +0.2 | close | + | |
| B&C 12 PS 32 | 44 = | 0.348 +0.06 | 82 +1 | 6 = | 95.8 -1 | close | + | |
| Sica 12 N 3 PL | 46 +2 | 0.3 +0.01 | 87.9 +6.9 | 5.5 -0.5 | 98.5 +1.7 | close | Xmax 5.5 mm < 6 mm: lower excursion-limited SPL | + |
| 18 Sound 12W750 | 49 +5 | 0.28 -0.01 | 73 -8 | 8 +2 | 97 +0.2 | close | + | |
| Faital PRO 12FH520 | 50 +6 | 0.29 = | 73.7 -7.3 | 7.25 +1.25 | 98 +1.2 | close | + |
Compare the closest 3 against the 12G40 →
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.