BMS 15CN680
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 39 Hz |
| Qts | 0.351 |
| Qes | 0.37 |
| Qms | 6.86 |
| Vas | 157.8 L |
| Sd | 850 cm² |
| Xmax | 5.5 mm |
| Re | 5.8 Ω |
| Bl | 20.3 T·m |
| Mms | 106.9 g |
| Pe | 500 W |
| Sensitivity | 97.4 dB |
Alignment hint
| EBP | 105 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 51.6 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 |
|---|---|---|---|---|---|---|---|---|
| BMS 15CN682 | 39 = | 0.351 = | 157.8 = | 5.5 = | 97.4 = | close | + | |
| BMS 15N620 | 41 +2 | 0.35 = | 154 -3.8 | 5.5 = | 98 +0.6 | close | + | |
| BMS 15N620 v2015 | 41 +2 | 0.348 = | 154 -3.8 | 5.5 = | 98 +0.6 | close | + | |
| Oberton 15CX | 38.2 -0.8 | 0.349 = | 163.8 +6 | 6.8 +1.3 | 97.8 +0.4 | close | + | |
| Conrad CPA15-300 | 36.9 -2.1 | 0.357 +0.01 | 161.6 +3.8 | 5.7 +0.2 | 97.1 -0.3 | close | 300 W vs 500 W: lower power handling | + |
| Eminence KAPPA 15 LF | 39 = | 0.384 +0.03 | 159 +1.2 | 5.5 = | 97.3 -0.1 | close | + | |
| Eminence KAPPA 15 LFA | 39 = | 0.384 +0.03 | 159 +1.2 | 5.5 = | 97.3 -0.1 | close | + | |
| PD PD 15BR40 | 38.7 -0.3 | 0.34 -0.01 | 158.3 +0.5 | 7.9 +2.4 | 98.1 +0.7 | close | + | |
| Precision Devices PD 15BR40 | 38.7 -0.3 | 0.34 -0.01 | 158.3 +0.5 | 7.9 +2.4 | 98.1 +0.7 | close | + | |
| Beyma 15MC700 | 41 +2 | 0.352 = | 153 -4.8 | 7.4 +1.9 | 97.7 +0.3 | close | + |
Compare the closest 3 against the 15CN680 →
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.