Rev E negative feedback caps

for the DIY ST35, the Dynakit and every other PP EL84

Rev E negative feedback caps

Postby jKeenan » Mon May 12, 2014 9:40 pm

I notice the silver mica caps in Rev D have been replaced with ceramic disk caps in Rev E. Is it worthwhile to retrofit the Rev E boards with the silver mica caps?

I read about silver mica being stable and microphonic issues with ceramic disks. I wonder if it makes any difference in this application.

Thanks
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Re: Rev E negative feedback caps

Postby Geek » Mon May 12, 2014 9:48 pm

Depends on the ceramic!

I've been switching myself to ceramics for some builds as the modern material offers as good or better characteristics at audio frequencies to mica.

Cheers!
-= Gregg =-
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