B&C 8MDN51
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 70 Hz |
| Qts | 0.2 |
| Qes | 0.21 |
| Qms | 3.7 |
| Vas | 16 L |
| Sd | 220 cm² |
| Xmax | 6 mm |
| Re | 5.1 Ω |
| Bl | 15.3 T·m |
| Mms | 23 g |
| Pe | 200 W |
| Sensitivity | 97 dB |
Alignment hint
| EBP | 333 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 1.4 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 |
|---|---|---|---|---|---|---|---|---|
| B&C 8NW51 | 68 -2 | 0.22 +0.02 | 14 -2 | 7 +1 | 97 = | close | 16 Ω vs 8 Ω: amp load changes | + |
| Beyma 8MC500Nd | 69 -1 | 0.18 -0.02 | 15.9 -0.1 | 5 -1 | 98 +1 | close | Xmax 5 mm < 6 mm: lower excursion-limited SPL | + |
| B&C 8FW51 | 74 +4 | 0.21 +0.01 | 12 -4 | 6 = | 97 = | close | + | |
| Beyma 8"MC300Nd | 62 -8 | 0.22 +0.02 | 18 +2 | 6 = | 96 -1 | close | + | |
| 18 Sound 8NTLW2000 | 71 +1 | 0.21 +0.01 | 13 -3 | 4.4 -1.6 | 97.5 +0.5 | usable | Xmax 4.4 mm < 6 mm: lower excursion-limited SPL | + |
| B&C 8MDN51 | 68 -2 | 0.27 +0.07 | 17.5 +1.5 | 6 = | 97 = | usable | 16 Ω vs 8 Ω: amp load changes | + |
| LaVoce WAF082.01 | 76 +6 | 0.21 +0.01 | 10.21 -5.79 | 5.8 -0.2 | 97 = | usable | Xmax 5.8 mm < 6 mm: lower excursion-limited SPL | + |
| B&C 8CLA64 | 71 +1 | 0.24 +0.04 | 12.5 -3.5 | 5.3 -0.7 | 96 -1 | usable | Xmax 5.3 mm < 6 mm: lower excursion-limited SPL | + |
| 18 Sound 8NW650 | 63 -7 | 0.25 +0.05 | 17.8 +1.8 | 5.5 -0.5 | 96 -1 | usable | Xmax 5.5 mm < 6 mm: lower excursion-limited SPL | + |
| B&C 8NW51 | 74 +4 | 0.17 -0.03 | 11 -5 | 6 = | 96.5 -0.5 | usable | + |
Compare the closest 3 against the 8MDN51 →
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.