Altec ER-15B
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 43 Hz |
| Qts | 0.303 |
| Qes | 0.31 |
| Qms | 12.89 |
| Vas | 226.5 L |
| Sd | 851.6 cm² |
| Xmax | 3.3 mm |
| Re | 5.2 Ω |
| Bl | 16.7 T·m |
| Mms | 61.5 g |
| Pe | 200 W |
| Sensitivity | 101.5 dB |
Alignment hint
| EBP | 139 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 50.9 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-15B | 43 = | 0.297 -0.01 | 225 -1.5 | 3.3 = | 101.5 = | close | + | |
| Electro-Voice EVM-15BII | 43 = | 0.293 -0.01 | 225 -1.5 | 3.3 = | 101.6 +0.1 | close | + | |
| P.Audio SN-15B | 42.9 -0.1 | 0.296 -0.01 | 234.7 +8.2 | 3.3 = | 101.5 = | close | + | |
| Oberton 15L400 | 43.25 +0.25 | 0.287 -0.02 | 229.9 +3.4 | 3.25 -0.05 | 102.5 +1 | close | Xmax 3.25 mm < 3.3 mm: lower excursion-limited SPL | + |
| Beyma 15M300 | 45 +2 | 0.271 -0.03 | 220 -6.5 | 3.5 +0.2 | 101.6 +0.1 | close | + | |
| Vitavox 15/40 | 43.5 +0.5 | 0.305 = | 212 -14.5 | 4 +0.7 | 98.6 -2.9 | close | 16 Ω vs 8 Ω: amp load changes · 150 W vs 200 W: lower power handling | + |
| Beyma 15GF200 | 44 +1 | 0.31 +0.01 | 191 -35.5 | 3.8 +0.5 | 100.5 -1 | close | + | |
| 18 Sound 15MB606 | 43 = | 0.35 +0.05 | 223 -3.5 | 4.5 +1.2 | 101 -0.5 | close | + | |
| Fane FC-153F01 | 40 -3 | 0.305 = | 220 -6.5 | 6.6 +3.3 | 100 -1.5 | close | + | |
| Cyrille Audio BM38F76P-HR | 43.1 +0.1 | 0.291 -0.01 | 188.3 -38.2 | 4.6 +1.3 | 100.7 -0.8 | close | + |
Compare the closest 3 against the ER-15B →
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.