From simulation with 100nF in the ic integrator I see a low frequency peak and with 10uF no peak.
What is the right compromise?
There's a little error in your sim schematic. R2 should connect to the negative rail and not to the output.
Try to adjust R21 together with the cap. And have an eye on the settling time, like @brian92fs said.
Meanwhile my amplifier is now set up in the living room, driving a pair of Infinity's. First impression is superb!
Finished !
And the first impression still holds true. I am not good at answering the question of ''how does it sound?'', but I can say for sure that it sounds different than my other amplifiers, and it certainly sounds pleasing and not fatiguing! It has found its place in my main audio system, and it will stay there.
Some final photos (in rather bad lighting). The front panel was made by Schaeffer AG (or Front Panel Express, for those across the pond). It is anodized in a med-bronze color, which nicely matches the beige color of the case, as well as the champagne color of the Sony player next to it. I really like how it turned out!
And the first impression still holds true. I am not good at answering the question of ''how does it sound?'', but I can say for sure that it sounds different than my other amplifiers, and it certainly sounds pleasing and not fatiguing! It has found its place in my main audio system, and it will stay there.
And that is what it's all about. Good stuff and a nice job
Is there any reason not to use thicker wire for inductor?
I have some 1.25mm diameter magnet wire. Something in between AWG 16 and 17.
https://www.powerstream.com/Wire_Size.htm
According to the chart here, the skin effect comes into play here with:
"Maximum frequency for 100% skin depth for solid conductor copper" 11KHz for awg 16.
Is this something I need to worry about?
I have some 1.25mm diameter magnet wire. Something in between AWG 16 and 17.
https://www.powerstream.com/Wire_Size.htm
According to the chart here, the skin effect comes into play here with:
"Maximum frequency for 100% skin depth for solid conductor copper" 11KHz for awg 16.
Is this something I need to worry about?
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