Beyma 6G40Nd/N
Thiele-Small parameters
| Nominal size | 6.5" |
|---|---|
| Impedance | 8 Ω |
| Fs | 100 Hz |
| Qts | 0.38 |
| Qes | 0.45 |
| Qms | 2.33 |
| Vas | 3.7 L |
| Sd | 140 cm² |
| Xmax | 3 mm |
| Re | 6 Ω |
| Mms | 13 g |
| Pe | 170 W |
| Sensitivity | 94 dB |
Alignment hint
| EBP | 222 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 1.5 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 6CLA51 | 96 -4 | 0.32 -0.06 | 4.3 +0.6 | 4.8 +1.8 | 94.5 +0.5 | usable | + | |
| 18 Sound 6NTLW2000 | 86 -14 | 0.38 = | 4.8 +1.1 | 4.9 +1.9 | 93 -1 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| B&C 6MBX44 | 115 +15 | 0.35 -0.03 | 4 +0.3 | 3.5 +0.5 | 98 +4 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 6NTLW2000 | 86 -14 | 0.35 -0.03 | 4.6 +0.9 | 4.9 +1.9 | 93 -1 | usable | + | |
| 18 Sound 6M44 | 102 +2 | 0.29 -0.09 | 3.8 +0.1 | 2.25 -0.75 | 95 +1 | usable | Xmax 2.25 mm < 3 mm: lower excursion-limited SPL | + |
| Oberton 6NM150 | 124 +24 | 0.377 = | 4 +0.3 | 2.25 -0.75 | 97 +3 | usable | Xmax 2.25 mm < 3 mm: lower excursion-limited SPL | + |
| B&C 6MBX44 | 113 +13 | 0.31 -0.07 | 4.1 +0.4 | 3.5 +0.5 | 98 +4 | usable | + | |
| B&C 6CLA51 | 89 -11 | 0.41 +0.03 | 5.7 +2 | 5.5 +2.5 | 93.5 -0.5 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 6NMB900 | 100 = | 0.34 -0.04 | 6.65 +2.95 | 3 = | 96 +2 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| Beyma 6"MI100 | 128 +28 | 0.51 +0.13 | 3.1 -0.6 | 3 = | 94 = | usable | + |
Compare the closest 3 against the 6G40Nd/N →
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.