← Manufacturer Guide · ESS
ESS.
The company where Dr Oskar Heil invented the Air Motion Transformer. The Great Heil AMT is still built today.
All 3 ESS drivers with Thiele-Small parameters
Reference data. We do not distribute ESS – this overview is for comparison. Comparable drivers from our range: Beyma, 18Sound and Mundorf in the shop. Looking for something specific? Ask us.
| Model | Typ | Size | Impedance | Fs | Qts | Vas | Xmax | Sensitivity | Power handling | |
|---|---|---|---|---|---|---|---|---|---|---|
| Great Heil AMT | AMT Driver | – | 4 | – | – | – | – | – | – | Datasheet ↗ |
| 689-1010 | Woofer | 10" | 4 | 27Hz | 0.48 | 49.6l | 4mm | 90.6dB | 80W | Datasheet ↗ |
| 689-2012 | Woofer | 12" | 4 | 24Hz | 0.47 | 189.4l | 6mm | 91.5dB | 200W | Datasheet ↗ |
USA · Kalifornien · Exotic level ★★★☆☆