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RE: is it really that awful ... maybe in spice?

I guess the question is... "What does it mean?"

In looking at DDT667's two peaks I'll agree they do not look pretty but how does that actually relate to the actual measured frequency response and the sonic character of the circuit?

I have seen the "ps resonant blips" in measured frequecy response plots but they only seem to show up outside of the passband. In the sim below I would expect to see the peak at 10hz show up as a dip in the rolloff of the low frequencies but assuming a full bandwidth amp, will the 60hz bump also show up?

dave


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