BMS 12N620
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 44.7 Hz |
| Qts | 0.25 |
| Qes | 0.26 |
| Qms | 5.1 |
| Vas | 72.7 L |
| Sd | 531 cm² |
| Xmax | 5.5 mm |
| Re | 5.7 Ω |
| Bl | 20.6 T·m |
| Mms | 68 g |
| Pe | 500 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 172 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 10.4 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 |
|---|---|---|---|---|---|---|---|---|
| Monacor SP-12/500FH | 45 +0.3 | 0.251 = | 76.2 +3.5 | 6.4 +0.9 | 98.2 +0.2 | close | + | |
| Faital PRO 12FH530 | 45 +0.3 | 0.26 +0.01 | 74.1 +1.4 | 7.5 +2 | 98 = | close | + | |
| Faital PRO 12FH510 | 45 +0.3 | 0.25 = | 75.2 +2.5 | 7.5 +2 | 97 -1 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Fane COLOSSUS 12XB | 43 -1.7 | 0.243 -0.01 | 78 +5.3 | 6 +0.5 | 97.7 -0.3 | close | + | |
| LaVoce NBASS12-30 | 46 +1.3 | 0.26 +0.01 | 68.63 -4.07 | 6.6 +1.1 | 97.5 -0.5 | close | + | |
| Oberton 12B400 | 50.47 +5.77 | 0.249 = | 74.74 +2.04 | 5.25 -0.25 | 98 = | close | Xmax 5.25 mm < 5.5 mm: lower excursion-limited SPL | + |
| Oberton 12B401 | 46.63 +1.93 | 0.245 -0.01 | 69.6 -3.1 | 6.75 +1.25 | 97 -1 | close | + | |
| Beyma 12CXA400Nd v2018 | 45 +0.3 | 0.251 = | 88.5 +15.8 | 5.5 = | 97.7 -0.3 | close | + | |
| Faital PRO 12FH510 | 45 +0.3 | 0.24 -0.01 | 81.3 +8.6 | 7.5 +2 | 98 = | close | + | |
| Oberton 12B450 | 46.29 +1.59 | 0.235 -0.02 | 71.75 -0.95 | 7.75 +2.25 | 99 +1 | close | + |
Compare the closest 3 against the 12N620 →
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.