My Blofeld modification for higher Line out level

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1 Monat 3 Wochen her #7 von rolfdegen
Hello there..

Yesterday I measured the original filter circuit in the Blofeld. The filter cut-off frequency is a little different than assumed. It is around 35KHz (-3dB).
Then I adjusted my filter circuit a little more.

Original filter plot:


My filter circuit with amplification of the output level


My new filter circuit

The question still arises as to whether an electrolytic capacitor is necessary at the exit or whether it can be saved 

Greetings Rolf
 

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