Hertz Audio ECX 690.5
Thiele-Small parameters
| Nominal size | 69" |
|---|---|
| Impedance | 4 Ω |
| Fs | 59 Hz |
| Qts | 0.73 |
| Qes | 0.91 |
| Qms | 3.7 |
| Vas | 29 L |
| Sd | 232 cm² |
| Xmax | 3.5 mm |
| Re | 3.3 Ω |
| Bl | 5 T·m |
| Mms | 18.8 g |
| Pe | 100 W |
| Sensitivity | 90 dB |
Alignment hint
| EBP | 65 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
EBP 50-100: works in either a sealed or ported alignment.
Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.
Substitute candidates
No other 69" cone driver in the catalog yet.
Used in enclosures (0)
No enclosure in the catalog uses this driver yet.