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What a coincidence: I did exactly the same this afternoon. With same results.

Hi Theo,

Whow, same thoughts were coming up on the other side of ‘the pound’.
This afternoon I did exactly the same.
And…. with exactly the same results.

I still had some glare. This bothered and irritated me. I thought: may be some extra HF frequency filtering is needed. So I place two extra caps (Oscon 47 uF + 1uF polymer) on the 3.3 V of the Juli@ digital part. See Picture. And … with exactly the same results !
Van on filtering, demping, ect


I like this.
To me it shows these improvements are not random.
If we both independently achieve the same results.

I also did some further experiments with the flat ferrites for ribbon cables.
See picture.
Van on filtering, demping, ect


A ‘pile of charcoal’ works. But also these flat ferrites for ribbon cable work.
However crucial in both situations is: adding decoupling caps too the 3.3, 5 and 12 volt lines before the ferrites (this way a 2nd order HF filter is created (I think))

The effect of ferrites is 4 times bigger, when ferrites are combined with caps.
If one does that, than ferrites really bring a major SQ improvement

More to come.


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  Herbie's Audio Lab  


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