Altec 418-8H
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 44.8 Hz |
| Qts | 0.293 |
| Qes | 0.33 |
| Qms | 2.65 |
| Vas | 242.4 L |
| Sd | 825.8 cm² |
| Xmax | 1.3 mm |
| Re | 5.5 Ω |
| Bl | 15.3 T·m |
| Mms | 49.8 g |
| Pe | 150 W |
| Sensitivity | 101.8 dB |
Alignment hint
| EBP | 136 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 50.2 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 |
|---|---|---|---|---|---|---|---|---|
| P.Audio SN-15B | 42.9 -1.9 | 0.296 = | 234.7 -7.7 | 3.3 +2 | 101.5 -0.3 | close | + | |
| Electro-Voice EVM-15BII | 43 -1.8 | 0.293 = | 225 -17.4 | 3.3 +2 | 101.6 -0.2 | close | + | |
| Electro-Voice EVM-15B | 43 -1.8 | 0.297 = | 225 -17.4 | 3.3 +2 | 101.5 -0.3 | close | + | |
| Oberton 15L400 | 43.25 -1.55 | 0.287 -0.01 | 229.9 -12.5 | 3.25 +1.95 | 102.5 +0.7 | close | + | |
| Altec ER-15B | 43 -1.8 | 0.303 +0.01 | 226.5 -15.9 | 3.3 +2 | 101.5 -0.3 | close | + | |
| Beyma 15M300 | 45 +0.2 | 0.271 -0.02 | 220 -22.4 | 3.5 +2.2 | 101.6 -0.2 | close | + | |
| JBL G135-8 | 45 +0.2 | 0.355 +0.06 | 235 -7.4 | 2.5 +1.2 | 101.4 -0.4 | close | + | |
| B&C 15 PE 40 | 44 -0.8 | 0.27 -0.02 | 205 -37.4 | 3 +1.7 | 101.5 -0.3 | close | + | |
| Altec 418-8LF vp CF1 | 39 -5.8 | 0.275 -0.02 | 211 -31.4 | 1.3 = | 99.9 -1.9 | close | + | |
| Altec 418-8LF | 39.5 -5.3 | 0.322 +0.03 | 279.8 +37.4 | 1.3 = | 100.3 -1.5 | usable | + |
Compare the closest 3 against the 418-8H →
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.