B&C 8NDL51
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 4 Ω |
| Fs | 75 Hz |
| Qts | 0.57 |
| Qes | 0.64 |
| Qms | 5.22 |
| Vas | 10.1 L |
| Sd | 220 cm² |
| Xmax | 7 mm |
| Re | 2.6 Ω |
| Bl | 7.3 T·m |
| Mms | 27 g |
| Pe | 200 W |
| Sensitivity | 94 dB |
Alignment hint
| EBP | 117 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 18.7 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 8CL51 | 83 +8 | 0.51 -0.06 | 9.5 -0.6 | 6 -1 | 94 = | close | 16 Ω vs 4 Ω: amp load changes · Xmax 6 mm < 7 mm: lower excursion-limited SPL | + |
| B&C 8NDL51 | 70 -5 | 0.47 -0.1 | 13.4 +3.3 | 7 = | 94 = | usable | 16 Ω vs 4 Ω: amp load changes | + |
| Beyma 8CM V2 | 75 = | 0.52 -0.05 | 14.6 +4.5 | 5.7 -1.3 | 94 = | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 5.7 mm < 7 mm: lower excursion-limited SPL | + |
| BMS 8S219 | 82 +7 | 0.41 -0.16 | 9.7 -0.4 | 6.3 -0.7 | 94 = | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 6.3 mm < 7 mm: lower excursion-limited SPL | + |
| BMS 8N519 | 74.9 -0.1 | 0.37 -0.2 | 10.9 +0.8 | 6.3 -0.7 | 94 = | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 6.3 mm < 7 mm: lower excursion-limited SPL | + |
| B&C 8CL51 | 69 -6 | 0.41 -0.16 | 12.5 +2.4 | 6.5 -0.5 | 94 = | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 6.5 mm < 7 mm: lower excursion-limited SPL | + |
| Faital PRO 8FE300 | 70 -5 | 0.66 +0.09 | 14.4 +4.3 | 5.52 -1.48 | 95 +1 | usable | 16 Ω vs 4 Ω: amp load changes · Xmax 5.52 mm < 7 mm: lower excursion-limited SPL | + |
| Faital PRO 8FE400 | 100 +25 | 0.53 -0.04 | 9.4 -0.7 | 4.77 -2.23 | 96 +2 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 4.77 mm < 7 mm: lower excursion-limited SPL | + |
| Faital PRO 8PR150 | 75 = | 0.48 -0.09 | 16.2 +6.1 | 5 -2 | 94 = | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 5 mm < 7 mm: lower excursion-limited SPL | + |
| Faital PRO 8PR320 | 65 -10 | 0.41 -0.16 | 13.1 +3 | 7.33 +0.33 | 95 +1 | usable | 8 Ω vs 4 Ω: amp load changes | + |
Compare the closest 3 against the 8NDL51 →
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.