B&C 4NDF34
Thiele-Small parameters
| Nominal size | 4" |
|---|---|
| Impedance | 8 Ω |
| Fs | 110 Hz |
| Qts | 0.27 |
| Qes | 0.28 |
| Qms | 4.2 |
| Vas | 1.6 L |
| Sd | 57 cm² |
| Xmax | 3.8 mm |
| Re | 5.5 Ω |
| Bl | 9 T·m |
| Mms | 6.1 g |
| Pe | 100 W |
| Sensitivity | 92 dB |
Alignment hint
| EBP | 393 · 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 -6 | 0.3 +0.03 | 1.79 +0.19 | 4 +0.2 | 91.5 -0.5 | close | 40 W vs 100 W: lower power handling | + |
| LaVoce WSN041.00-16 | 106 -4 | 0.36 +0.09 | 1.96 +0.36 | 4.3 +0.5 | 91 -1 | usable | 16 Ω vs 8 Ω: amp load changes · 40 W vs 100 W: lower power handling | + |
| Faital PRO 4FE42 | 110 = | 0.38 +0.11 | 1.8 +0.2 | 2.83 -0.97 | 93 +1 | usable | 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 | + |
| B&C 4NDS34 | 79 -31 | 0.24 -0.03 | 2.6 +1 | 3.8 = | 89 -3 | usable | + | |
| Faital PRO 4FE42 | 110 = | 0.47 +0.2 | 1.9 +0.3 | 2.83 -0.97 | 94 +2 | usable | 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 +8 | 0.39 +0.12 | 1.3 -0.3 | 2.2 -1.6 | 90.2 -1.8 | usable | 70 W vs 100 W: lower power handling · Xmax 2.2 mm < 3.8 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE44 | 150 +40 | 0.33 +0.06 | 1.1 -0.5 | 1.67 -2.13 | 97 +5 | risky | 40 W vs 100 W: lower power handling · Xmax 1.67 mm < 3.8 mm: lower excursion-limited SPL | + |
| Eminence ALPHA 4-4 | 120 +10 | 0.63 +0.36 | 1.76 +0.16 | 2.6 -1.2 | 88 -4 | 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 | + |
| Faital PRO 4FE32 | 100 -10 | 0.61 +0.34 | 2.3 +0.7 | 2.73 -1.07 | 91 -1 | risky | 30 W vs 100 W: lower power handling · Xmax 2.73 mm < 3.8 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE32 | 100 -10 | 0.53 +0.26 | 2.5 +0.9 | 1.73 -2.07 | 91 -1 | 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 | + |
Compare the closest 3 against the 4NDF34 →
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.