18 Sound 8NMB750
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 88 Hz |
| Qts | 0.27 |
| Qes | 0.28 |
| Qms | 6.1 |
| Vas | 6.9 L |
| Sd | 230 cm² |
| Xmax | 6.1 mm |
| Re | 5.2 Ω |
| Bl | 18.7 T·m |
| Mms | 35 g |
| Pe | 350 W |
| Sensitivity | 96.5 dB |
Alignment hint
| EBP | 314 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 1.2 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 |
|---|---|---|---|---|---|---|---|---|
| LaVoce WAN082.01 | 85 -3 | 0.32 +0.05 | 9 +2.1 | 5.8 -0.3 | 96 -0.5 | usable | 200 W vs 350 W: lower power handling · Xmax 5.8 mm < 6.1 mm: lower excursion-limited SPL | + |
| LaVoce WAN082.02 | 80 -8 | 0.23 -0.04 | 8.97 +2.07 | 5.8 -0.3 | 96.5 = | usable | 200 W vs 350 W: lower power handling · Xmax 5.8 mm < 6.1 mm: lower excursion-limited SPL | + |
| 18 Sound 8NMB750 | 91 +3 | 0.37 +0.1 | 7.3 +0.4 | 6.3 +0.2 | 95 -1.5 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| B&C 8NW51 | 76 -12 | 0.25 -0.02 | 10.6 +3.7 | 6 -0.1 | 97 +0.5 | usable | 4 Ω vs 8 Ω: amp load changes · 200 W vs 350 W: lower power handling · Xmax 6 mm < 6.1 mm: lower excursion-limited SPL | + |
| B&C 8NDL64 | 80 -8 | 0.25 -0.02 | 9.6 +2.7 | 4.5 -1.6 | 97 +0.5 | usable | Xmax 4.5 mm < 6.1 mm: lower excursion-limited SPL | + |
| Oberton 8NMB250v4 | 82.03 -5.97 | 0.258 -0.01 | 10.89 +3.99 | 4.5 -1.6 | 96 -0.5 | usable | 250 W vs 350 W: lower power handling · Xmax 4.5 mm < 6.1 mm: lower excursion-limited SPL | + |
| BMS 8N515 | 87.7 -0.3 | 0.3 +0.03 | 11.04 +4.14 | 4 -2.1 | 96 -0.5 | usable | 200 W vs 350 W: lower power handling · Xmax 4 mm < 6.1 mm: lower excursion-limited SPL | + |
| BMS 8S215 | 87.7 -0.3 | 0.31 +0.04 | 11.04 +4.14 | 4.25 -1.85 | 96 -0.5 | usable | 200 W vs 350 W: lower power handling · Xmax 4.25 mm < 6.1 mm: lower excursion-limited SPL | + |
| 18 Sound 8NTLW2000 | 74 -14 | 0.26 -0.01 | 11.3 +4.4 | 4.4 -1.7 | 96.5 = | usable | 16 Ω vs 8 Ω: amp load changes · Xmax 4.4 mm < 6.1 mm: lower excursion-limited SPL | + |
| LaVoce WAF082.01 | 76 -12 | 0.21 -0.06 | 10.21 +3.31 | 5.8 -0.3 | 97 +0.5 | usable | 250 W vs 350 W: lower power handling · Xmax 5.8 mm < 6.1 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 8NMB750 →
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.