Eminence ALPHA-8MRA
Thiele-Small parameters
| Nominal size | 8" |
|---|---|
| Impedance | 8 Ω |
| Fs | 514 Hz |
| Qts | 1.42 |
| Qes | 2.08 |
| Qms | 4.48 |
| Vas | 0.8 L |
| Sd | 205.9 cm² |
| Xmax | 1.6 mm |
| Re | 7.32 Ω |
| Bl | 8.9 T·m |
| Mms | 7 g |
| Pe | 125 W |
| Sensitivity | 100.9 dB |
Alignment hint
| EBP | 247 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
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 |
|---|---|---|---|---|---|---|---|---|
| Sica 8 M 1.5 CS | 460 -54 | 1.82 +0.4 | 0.7 -0.1 | 1 -0.6 | 98.7 -2.2 | usable | Xmax 1 mm < 1.6 mm: lower excursion-limited SPL | + |
| B&C 8NSM64 | 245 -269 | 0.43 -0.99 | 1.5 +0.7 | 2 +0.4 | 100 -0.9 | risky | 16 Ω vs 8 Ω: amp load changes | + |
| B&C 8NSM64 | 245 -269 | 0.34 -1.08 | 1.5 +0.7 | 2 +0.4 | 100 -0.9 | risky | + | |
| 18 Sound 8NM610 | 260 -254 | 0.23 -1.19 | 1.6 +0.8 | 3 +1.4 | 104 +3.1 | risky | 16 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8NM610 | 260 -254 | 0.21 -1.21 | 1.5 +0.7 | 3 +1.4 | 104 +3.1 | risky | + | |
| Faital PRO 8FE400 | 100 -414 | 0.53 -0.89 | 9.4 +8.6 | 4.77 +3.17 | 96 -4.9 | risky | + | |
| Faital PRO 8FE400 | 100 -414 | 0.48 -0.94 | 9.9 +9.1 | 4.87 +3.27 | 96 -4.9 | risky | 4 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 8MB710 | 108 -406 | 0.32 -1.1 | 9 +8.2 | 2.25 +0.65 | 99.5 -1.4 | risky | + | |
| 18 Sound 8MB720 | 108 -406 | 0.32 -1.1 | 9 +8.2 | 2.25 +0.65 | 99.5 -1.4 | risky | + | |
| Faital PRO 8PR155 | 85 -429 | 0.46 -0.96 | 10.6 +9.8 | 3.57 +1.97 | 97 -3.9 | risky | 16 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the ALPHA-8MRA →
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.