Eminence ALPHA 4-4
Thiele-Small parameters
| Nominal size | 4" |
|---|---|
| Impedance | 4 Ω |
| Fs | 120 Hz |
| Qts | 0.63 |
| Qes | 0.7 |
| Qms | 6.41 |
| Vas | 1.76 L |
| Sd | 57.7 cm² |
| Xmax | 2.6 mm |
| Re | 3.42 Ω |
| Bl | 4.12 T·m |
| Mms | 5 g |
| Pe | 55 W |
| Sensitivity | 88 dB |
Alignment hint
| EBP | 171 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 6.8 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 |
|---|---|---|---|---|---|---|---|---|
| Eminence ALPHA 4-8 | 123 +3 | 0.75 +0.12 | 1.94 +0.18 | 2.6 = | 88 = | close | 8 Ω vs 4 Ω: amp load changes | + |
| Sica 4 L 1 SL | 108.3 -11.7 | 0.63 = | 1.2 -0.56 | 2.4 -0.2 | 86.2 -1.8 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 2.4 mm < 2.6 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE32 | 100 -20 | 0.61 -0.02 | 2.3 +0.54 | 2.73 +0.13 | 91 +3 | usable | 8 Ω vs 4 Ω: amp load changes · 30 W vs 55 W: lower power handling | + |
| Faital PRO 4FE42 | 110 -10 | 0.47 -0.16 | 1.9 +0.14 | 2.83 +0.23 | 94 +6 | usable | 8 Ω vs 4 Ω: amp load changes · 40 W vs 55 W: lower power handling | + |
| Faital PRO 4FE35 | 100 -20 | 0.83 +0.2 | 2.4 +0.64 | 2.73 +0.13 | 91 +3 | usable | 8 Ω vs 4 Ω: amp load changes · 30 W vs 55 W: lower power handling | + |
| Faital PRO 4FE42 | 110 -10 | 0.38 -0.25 | 1.8 +0.04 | 2.83 +0.23 | 93 +5 | usable | 40 W vs 55 W: lower power handling | + |
| Faital PRO 4FE35 | 100 -20 | 0.73 +0.1 | 2.4 +0.64 | 1.73 -0.87 | 91 +3 | usable | 30 W vs 55 W: lower power handling · Xmax 1.73 mm < 2.6 mm: lower excursion-limited SPL | + |
| Sica 4 E 1 CS | 118 -2 | 0.39 -0.24 | 1.3 -0.46 | 2.2 -0.4 | 90.2 +2.2 | usable | 8 Ω vs 4 Ω: amp load changes · Xmax 2.2 mm < 2.6 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE32 | 100 -20 | 0.53 -0.1 | 2.5 +0.74 | 1.73 -0.87 | 91 +3 | usable | 30 W vs 55 W: lower power handling · Xmax 1.73 mm < 2.6 mm: lower excursion-limited SPL | + |
| Faital PRO 4FE32 | 100 -20 | 0.81 +0.18 | 2.4 +0.64 | 1.83 -0.77 | 91 +3 | usable | 16 Ω vs 4 Ω: amp load changes · 30 W vs 55 W: lower power handling · Xmax 1.83 mm < 2.6 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the ALPHA 4-4 →
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.