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Old 21st March 2005, 08:39 AM   #81
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He wants us to try a Low Pass Filter.
It's only audio. Member of the non modular PCB design committee
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Old 23rd March 2005, 12:48 AM   #82
rodolfo is offline rodolfo  Mexico
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Lightbulb Re: Low pass filter

Originally posted by Raka

I'm building a new GC with a pre stage (buf634 and OPA627 a la Carlos) and would like to include the low pass filter as suggested by Rassmusen.
Should I locate the LPF attached to the very chip? I'm planning the inverted Thorsten one, but because now will be buffered and the pot (10K) will be at the input of the OPA I don't know which the values for the filter will be.
Will be ok with the following values?

chek this schem.

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