BMS 12CN680
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 46 Hz |
| Qts | 0.26 |
| Qes | 0.272 |
| Qms | 5.8 |
| Vas | 58 L |
| Sd | 487 cm² |
| Xmax | 5.5 mm |
| Re | 5.7 Ω |
| Bl | 20.53 T·m |
| Mms | 69.6 g |
| Pe | 80 W |
| Sensitivity | 95 dB |
Alignment hint
| EBP | 169 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 9.1 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 |
|---|---|---|---|---|---|---|---|---|
| BMS 12CN682 | 46 = | 0.258 = | 58 = | 5.5 = | 96.7 +1.7 | close | + | |
| Beyma 12P1000ND | 47 +1 | 0.26 = | 49 -9 | 8 +2.5 | 94.6 -0.4 | close | + | |
| PHL Audio 4310NDU | 43 -3 | 0.291 +0.03 | 57 -1 | 5.6 +0.1 | 95.3 +0.3 | close | + | |
| 18 Sound 12NLW9410 | 42 -4 | 0.26 = | 55 -3 | 11 +5.5 | 95 = | close | + | |
| B&C 12NDL88-4 | 48 +2 | 0.24 -0.02 | 57 -1 | 8 +2.5 | 95.9 +0.9 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Beyma 12 P1000/Nd | 47 +1 | 0.26 = | 49 -9 | 8 +2.5 | 96 +1 | close | + | |
| Sica 12 S 4 PL | 40.4 -5.6 | 0.25 -0.01 | 57 -1 | 7.5 +2 | 95.5 +0.5 | close | + | |
| B&C 12 PS 100 | 44 -2 | 0.27 +0.01 | 47 -11 | 5.7 +0.2 | 95.2 +0.2 | close | + | |
| LaVoce NBASS12-30 | 46 = | 0.26 = | 68.63 +10.63 | 6.6 +1.1 | 97.5 +2.5 | close | + | |
| Sica 12 PFS 4 | 39 -7 | 0.26 = | 55.6 -2.4 | 9 +3.5 | 94.8 -0.2 | close | + |
Compare the closest 3 against the 12CN680 →
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.