Eminence ALPHA-8A
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 73 Hz |
| Qts | 0.59 |
| Qes | 0.68 |
| Qms | 4.6 |
| Vas | 17.7 L |
| Sd | 210 cm² |
| Xmax | 3.2 mm |
| Re | 5.3 Ω |
| Bl | 7.8 T·m |
| Mms | 17 g |
| Pe | 125 W |
| Sensitivity | 94 dB |
Alignment hint
| EBP | 107 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 40.6 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 |
|---|---|---|---|---|---|---|---|---|
| Faital PRO 8FE200 | 80 +7 | 0.63 +0.04 | 16.1 -1.6 | 4.67 +1.47 | 95 +1 | close | + | |
| Faital PRO 8PR150 | 75 +2 | 0.48 -0.11 | 16.2 -1.5 | 5 +1.8 | 94 = | close | + | |
| Beyma 8CM V2 | 75 +2 | 0.52 -0.07 | 14.6 -3.1 | 5.7 +2.5 | 94 = | usable | + | |
| Faital PRO 8FE300 | 70 -3 | 0.66 +0.07 | 14.4 -3.3 | 5.52 +2.32 | 95 +1 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8MB500 | 73 = | 0.5 -0.09 | 21.3 +3.6 | 6 +2.8 | 95 +1 | usable | 16 Ω vs 8 Ω: amp load changes | + |
| Faital PRO 8FE200 | 80 +7 | 0.45 -0.14 | 15.8 -1.9 | 4.62 +1.42 | 95 +1 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Faital PRO 8FE300 | 70 -3 | 0.44 -0.15 | 15.7 -2 | 5.52 +2.32 | 95 +1 | usable | + | |
| B&C 8NDL51 | 75 +2 | 0.57 -0.02 | 10.1 -7.6 | 7 +3.8 | 94 = | usable | 4 Ω vs 8 Ω: amp load changes | + |
| B&C 8NDL51 | 70 -3 | 0.47 -0.12 | 13.4 -4.3 | 7 +3.8 | 94 = | usable | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8MB500 | 74 +1 | 0.43 -0.16 | 21.5 +3.8 | 6 +2.8 | 95 +1 | usable | + |
Compare the closest 3 against the ALPHA-8A →
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.