Altec ER-15
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 42.1 Hz |
| Qts | 0.256 |
| Qes | 0.28 |
| Qms | 3 |
| Vas | 217.2 L |
| Sd | 851.6 cm² |
| Xmax | 2.5 mm |
| Re | 5.2 Ω |
| Bl | 18.1 T·m |
| Mms | 66.9 g |
| Pe | 200 W |
| Sensitivity | 101.5 dB |
Alignment hint
| EBP | 150 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 32.8 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 15MB650 | 40 -2.1 | 0.26 = | 210 -7.2 | 4 +1.5 | 101.5 = | close | + | |
| B&C 15 PE 40 | 44 +1.9 | 0.27 +0.01 | 205 -12.2 | 3 +0.5 | 101.5 = | close | + | |
| Beyma 15M300 | 45 +2.9 | 0.271 +0.02 | 220 +2.8 | 3.5 +1 | 101.6 +0.1 | close | + | |
| DAS Audio 15B | 42 -0.1 | 0.241 -0.02 | 198 -19.2 | 4 +1.5 | 101.2 -0.3 | close | + | |
| Electro-Voice DL15X v1 | 40 -2.1 | 0.262 +0.01 | 229 +11.8 | 4.1 +1.6 | 100.6 -0.9 | close | + | |
| Audax PR38LEX100VST | 38.7 -3.4 | 0.258 = | 221.1 +3.9 | 4 +1.5 | 100.1 -1.4 | close | + | |
| B&C 15 PLB 76 (prodance) | 38.7 -3.4 | 0.259 = | 215 -2.2 | 5 +2.5 | 100.6 -0.9 | close | + | |
| Electro-Voice EVM-15BII | 43 +0.9 | 0.293 +0.04 | 225 +7.8 | 3.3 +0.8 | 101.6 +0.1 | close | + | |
| Electro-Voice EVM-15B | 43 +0.9 | 0.297 +0.04 | 225 +7.8 | 3.3 +0.8 | 101.5 = | close | + | |
| JBL M151-8 | 45 +2.9 | 0.256 = | 198.2 -19 | 4.4 +1.9 | 102.5 +1 | close | + |
Compare the closest 3 against the ER-15 →
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.