B&C 8NSM64
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 245 Hz |
| Qts | 0.34 |
| Qes | 0.35 |
| Qms | 9.3 |
| Vas | 1.5 L |
| Sd | 220 cm² |
| Xmax | 2 mm |
| Re | 5.7 Ω |
| Bl | 22 T·m |
| Mms | 19 g |
| Pe | 250 W |
| Sensitivity | 100 dB |
Alignment hint
| EBP | 700 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 0.5 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 8NSM64 | 245 = | 0.43 +0.09 | 1.5 = | 2 = | 100 = | close | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8NM610 | 260 +15 | 0.23 -0.11 | 1.6 +0.1 | 3 +1 | 104 +4 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8NM610 | 260 +15 | 0.21 -0.13 | 1.5 = | 3 +1 | 104 +4 | usable | + | |
| 18 Sound 8MB710 | 108 -137 | 0.32 -0.02 | 9 +7.5 | 2.25 +0.25 | 99.5 -0.5 | risky | + | |
| 18 Sound 8MB720 | 108 -137 | 0.32 -0.02 | 9 +7.5 | 2.25 +0.25 | 99.5 -0.5 | risky | + | |
| Oberton 8NM201 | 102.81 -142.19 | 0.286 -0.05 | 8.07 +6.57 | 2.75 +0.75 | 98 -2 | risky | + | |
| 18 Sound 8NMB750 | 91 -154 | 0.37 +0.03 | 7.3 +5.8 | 6.3 +4.3 | 95 -5 | risky | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8NMB750 | 88 -157 | 0.27 -0.07 | 6.9 +5.4 | 6.1 +4.1 | 96.5 -3.5 | risky | + | |
| Faital PRO 8PR155 | 85 -160 | 0.37 +0.03 | 9.4 +7.9 | 3.57 +1.57 | 97 -3 | risky | + | |
| LaVoce WAN082.01 | 85 -160 | 0.32 -0.02 | 9 +7.5 | 5.8 +3.8 | 96 -4 | risky | + |
Compare the closest 3 against the 8NSM64 →
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.