Beyma 12"G40
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 44 Hz |
| Qts | 0.3 |
| Qes | 0.3 |
| Qms | 11.6 |
| Vas | 81 L |
| Sd | 530 cm² |
| Xmax | 7 mm |
| Re | 6 Ω |
| Mms | 62 g |
| Pe | 500 W |
| Sensitivity | 97 dB |
Alignment hint
| EBP | 147 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 17.8 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 12G40 | 44 = | 0.292 -0.01 | 81 = | 6 -1 | 96.8 -0.2 | close | Xmax 6 mm < 7 mm: lower excursion-limited SPL | + |
| Beyma 12WRS400 | 42 -2 | 0.29 -0.01 | 91 +10 | 6.3 -0.7 | 97 = | close | Xmax 6.3 mm < 7 mm: lower excursion-limited SPL | + |
| Beyma 12WR400 | 42 -2 | 0.285 -0.02 | 91.1 +10.1 | 6.3 -0.7 | 96.9 -0.1 | close | Xmax 6.3 mm < 7 mm: lower excursion-limited SPL | + |
| 18 Sound 12W750 | 49 +5 | 0.28 -0.02 | 73 -8 | 8 +1 | 97 = | close | + | |
| Sica 12 S 3 PL | 42 -2 | 0.34 +0.04 | 76.9 -4.1 | 7 = | 95.8 -1.2 | close | + | |
| Faital PRO 12FH520 | 50 +6 | 0.29 -0.01 | 73.7 -7.3 | 7.25 +0.25 | 98 +1 | close | + | |
| Faital PRO 12FH510 | 45 +1 | 0.25 -0.05 | 75.2 -5.8 | 7.5 +0.5 | 97 = | close | 4 Ω vs 8 Ω: amp load changes | + |
| Faital PRO 12FH500 | 45 +1 | 0.25 -0.05 | 87.3 +6.3 | 7.5 +0.5 | 97 = | close | + | |
| Beyma 12LW30/N v2015 | 42 -2 | 0.269 -0.03 | 84 +3 | 6.1 -0.9 | 96.3 -0.7 | close | Xmax 6.1 mm < 7 mm: lower excursion-limited SPL | + |
| Faital PRO 12FH530 | 45 +1 | 0.26 -0.04 | 74.1 -6.9 | 7.5 +0.5 | 98 +1 | close | + |
Compare the closest 3 against the 12"G40 →
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.