B&C 4NDS34
Thiele-Small parameters
| Nominal size | 4" |
|---|---|
| Impedance | 8 Ω |
| Fs | 79 Hz |
| Qts | 0.24 |
| Qes | 0.25 |
| Qms | 8.5 |
| Vas | 2.6 L |
| Sd | 57 cm² |
| Xmax | 3.8 mm |
| Re | 5.5 Ω |
| Bl | 8.8 T·m |
| Mms | 7.2 g |
| Pe | 100 W |
| Sensitivity | 89 dB |
Alignment hint
| EBP | 316 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 0.3 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 WSN041.00 | 104 +25 | 0.3 +0.06 | 1.79 -0.81 | 4 +0.2 | 91.5 +2.5 | usable | 40 W vs 100 W: lower power handling | + |
| B&C 4NDF34 | 110 +31 | 0.27 +0.03 | 1.6 -1 | 3.8 = | 92 +3 | usable | + | |
| LaVoce WSN041.00-16 | 106 +27 | 0.36 +0.12 | 1.96 -0.64 | 4.3 +0.5 | 91 +2 | risky | 16 Ω vs 8 Ω: amp load changes · 40 W vs 100 W: lower power handling | + |
| Faital PRO 4FE42 | 110 +31 | 0.38 +0.14 | 1.8 -0.8 | 2.83 -0.97 | 93 +4 | risky | 4 Ω vs 8 Ω: amp load changes · 40 W vs 100 W: lower power handling · Xmax 2.83 mm < 3.8 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE32 | 100 +21 | 0.61 +0.37 | 2.3 -0.3 | 2.73 -1.07 | 91 +2 | risky | 30 W vs 100 W: lower power handling · Xmax 2.73 mm < 3.8 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE32 | 100 +21 | 0.53 +0.29 | 2.5 -0.1 | 1.73 -2.07 | 91 +2 | risky | 4 Ω vs 8 Ω: amp load changes · 30 W vs 100 W: lower power handling · Xmax 1.73 mm < 3.8 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE42 | 110 +31 | 0.47 +0.23 | 1.9 -0.7 | 2.83 -0.97 | 94 +5 | risky | 40 W vs 100 W: lower power handling · Xmax 2.83 mm < 3.8 mm: lower excursion-limited SPL | + |
| Sica 4 E 1 CS | 118 +39 | 0.39 +0.15 | 1.3 -1.3 | 2.2 -1.6 | 90.2 +1.2 | risky | 70 W vs 100 W: lower power handling · Xmax 2.2 mm < 3.8 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE35 | 100 +21 | 0.83 +0.59 | 2.4 -0.2 | 2.73 -1.07 | 91 +2 | risky | 30 W vs 100 W: lower power handling · Xmax 2.73 mm < 3.8 mm: lower excursion-limited SPL | + |
| Eminence ALPHA 4-4 | 120 +41 | 0.63 +0.39 | 1.76 -0.84 | 2.6 -1.2 | 88 -1 | risky | 4 Ω vs 8 Ω: amp load changes · 55 W vs 100 W: lower power handling · Xmax 2.6 mm < 3.8 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 4NDS34 →
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.