1163 mixer cutting frequency

KOSMO MODULES
6

Got it !!
I am wondering if R11 was not the issue from the start.

16237892876195628059519442264321
162378928761956280595194422643211800×4000 772 KB

16237893099027345105162188924388
162378930990273451051621889243884000×1800 1.31 MB

I connected with extra wires and it works great. No buzzing, no frequency cut-off, all good.
Many thanks !!!

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