I decided to try out a simpler topology, without a discrete op amp and such, and it turned up good. The secret, I believe is in the large number or bootstraps, that act as a constant current source equivalent, and the low overall gain of the amp (≈6). Anyway the specs are somewhat good and they are:
- Input Sensitivity - 2V
- Output Power - 20Wrms
- Drawn Power - 41W
- Efficiency - 50%
- Frequency Response - 1Hz - 100Khz @-3dB
- THD+N - 0.1% Good value for such a simple topology.
- Ripple Rejection - -43dB
