Altec 420-8B vp bleu
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30.2 Hz |
| Qts | 0.522 |
| Qes | 0.63 |
| Qms | 3.05 |
| Vas | 303.6 L |
| Sd | 876.2 cm² |
| Xmax | 2.6 mm |
| Re | 4.5 Ω |
| Bl | 11.5 T·m |
| Mms | 98.2 g |
| Pe | 25 W |
| Sensitivity | 95.7 dB |
Alignment hint
| EBP | 48 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 363.6 L |
EBP < 50: favours a sealed (closed) 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 |
|---|---|---|---|---|---|---|---|---|
| P.Audio IMF HP-15W | 30.8 +0.6 | 0.517 -0.01 | 304.7 +1.1 | 3.5 +0.9 | 94.5 -1.2 | close | + | |
| Kenford PA380 vp | 34 +3.8 | 0.522 = | 260 -43.6 | 3.5 +0.9 | 95.6 -0.1 | close | + | |
| Hyper Phase CM15T | 35 +4.8 | 0.508 -0.01 | 308 +4.4 | 3.5 +0.9 | 97 +1.3 | close | + | |
| Altec 420-8B vp rouge | 34.9 +4.7 | 0.53 +0.01 | 277.6 -26 | 2.3 -0.3 | 97.1 +1.4 | close | Xmax 2.3 mm < 2.6 mm: lower excursion-limited SPL | + |
| MCM Electronics 55-2974 | 32.5 +2.3 | 0.473 -0.05 | 322.2 +18.6 | 6 +3.4 | 95.4 -0.3 | close | + | |
| P.Audio HP-15W | 34 +3.8 | 0.492 -0.03 | 254.3 -49.3 | 3.5 +0.9 | 95.4 -0.3 | close | + | |
| Beyma CM15/T | 34 +3.8 | 0.615 +0.09 | 293 -10.6 | 3.5 +0.9 | 95.4 -0.3 | close | + | |
| Celestion BN15-400X v2018 | 35.1 +4.9 | 0.527 +0.01 | 253 -50.6 | 4 +1.4 | 96.5 +0.8 | close | + | |
| Stromberg-Carlson RF 484 vp2 | 31 +0.8 | 0.598 +0.08 | 294.9 -8.7 | 4 +1.4 | 92.7 -3 | close | + | |
| Eminence BETA 15 | 35 +4.8 | 0.585 +0.06 | 334.6 +31 | 4 +1.4 | 96.6 +0.9 | usable | + |
Compare the closest 3 against the 420-8B vp bleu →
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.