dbelousov
Well-known member
There is a schematic. Instead of using resistors in the 100k+ range and small caps, it uses small resistors and "quasi-bipolar" lytics. C115 is still here, but isn't it redundant in this case? IC101 is TL072, so it's not bipolar.
I have a temptation to replace R149 with something like 300k, R144/R146 with links, the lytics with a 0.47-0.68 film cap, and short C115, so it will be a "conventional" servo. There is enough space for a 10uF mylar cap on the board, but my limited knowledge of audio amp design doesn't provide me any reason why I should use such a part instead of making it a "normal servo" with a smaller cap. There will be enough space even for PP in this case for the smoothest LF roll-off possible. I'm making a full recap of this unit now anyway, so why not?
I have a temptation to replace R149 with something like 300k, R144/R146 with links, the lytics with a 0.47-0.68 film cap, and short C115, so it will be a "conventional" servo. There is enough space for a 10uF mylar cap on the board, but my limited knowledge of audio amp design doesn't provide me any reason why I should use such a part instead of making it a "normal servo" with a smaller cap. There will be enough space even for PP in this case for the smoothest LF roll-off possible. I'm making a full recap of this unit now anyway, so why not?