Altec ER-15L
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 43 Hz |
| Qts | 0.238 |
| Qes | 0.25 |
| Qms | 4.96 |
| Vas | 246.4 L |
| Sd | 851.6 cm² |
| Xmax | 3.3 mm |
| Re | 5.2 Ω |
| Bl | 17.8 T·m |
| Mms | 56.5 g |
| Pe | 200 W |
| Sensitivity | 102.8 dB |
Alignment hint
| EBP | 172 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 31.5 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 |
|---|---|---|---|---|---|---|---|---|
| Electro-Voice EVM-15L | 43 = | 0.238 = | 245 -1.4 | 2.9 -0.4 | 102.8 = | close | 100 W vs 200 W: lower power handling · Xmax 2.9 mm < 3.3 mm: lower excursion-limited SPL | + |
| Altec 3156 | 38 -5 | 0.24 = | 246.4 = | 3.8 +0.5 | 99.8 -3 | close | + | |
| Great Plains Audio 3156 GPA | 38 -5 | 0.24 = | 246.4 = | 3.8 +0.5 | 99.8 -3 | close | + | |
| P.Audio WN-15N | 39.8 -3.2 | 0.251 +0.01 | 286.8 +40.4 | 3.5 +0.2 | 102.1 -0.7 | close | 150 W vs 200 W: lower power handling | + |
| Oberton 15L400 | 43.25 +0.25 | 0.287 +0.05 | 229.9 -16.5 | 3.25 -0.05 | 102.5 -0.3 | close | Xmax 3.25 mm < 3.3 mm: lower excursion-limited SPL | + |
| Monacor SP-38/300PA | 48 +5 | 0.23 -0.01 | 213 -33.4 | 4 +0.7 | 103.2 +0.4 | close | + | |
| DAS Audio 15B | 42 -1 | 0.241 = | 198 -48.4 | 4 +0.7 | 101.2 -1.6 | close | + | |
| Beyma 15M300 | 45 +2 | 0.271 +0.03 | 220 -26.4 | 3.5 +0.2 | 101.6 -1.2 | close | + | |
| P.Audio SN-15B | 42.9 -0.1 | 0.296 +0.06 | 234.7 -11.7 | 3.3 = | 101.5 -1.3 | close | + | |
| JBL M151-8 | 45 +2 | 0.256 +0.02 | 198.2 -48.2 | 4.4 +1.1 | 102.5 -0.3 | close | + |
Compare the closest 3 against the ER-15L →
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.