No audio amplifier should exhibit phase shift over the 20-20khz range unless the response is modified by for example tone controls which phase shift.
What has a 741 got to do with all this, configured with a gain of +10 and a low input impedance
Use a faster opamp and the problem will diminish.
Edit... the lack of speed of the 741 is why you are seeing the "differential" voltage between the inputs increase as frequency increases.
What has a 741 got to do with all this, configured with a gain of +10 and a low input impedance
Use a faster opamp and the problem will diminish.
Edit... the lack of speed of the 741 is why you are seeing the "differential" voltage between the inputs increase as frequency increases.
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I say again: do you have independent correlation between your statement and listening experiences ? Or what is your verification?
You have space here to say their knowledge and experience so please write.
This would be useless without discussing topology. Due to heavy emitter degeneration in my input stage, the input stage cannot be dynamically saturated. This is very different from input differential BJT stage without any emitter degeneration. Anyway, your wish fulfilled:
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I have already replied - you can read the Vdiff magnitude here, as v-v(i) plot:
http://www.diyaudio.com/forums/soli...-listening-characteristics-2.html#post1989136
Just look at the frequency of interest and read v-v(i) in dB. You can see it is quite flat very very high above audio band.
http://www.diyaudio.com/forums/soli...-listening-characteristics-2.html#post1989136
Just look at the frequency of interest and read v-v(i) in dB. You can see it is quite flat very very high above audio band.
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You showed what? Only crazy simulations of unrealistic circuits...Please show your good example
Your pictures of phase shifts have nothing to do with "skreslení" (distortion), but with finite SR of real components. Very poor uA741 gives poor results, nothing new. Show measured results of yours circuits, please .
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