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In Reply to: RE: Pilotrol 913 mono [preamp posted by Michael Samra on October 05, 2014 at 15:42:23
Hi Mike,
Do you have a rule of thumb as to where to use carbon film and metal film resistors? Do you use carbon composite for gridstoppers?
Dave
Follow Ups:
Dave
I use metal films from grid to ground in phono and high gain stages and carbon film in the plate loads and carbon comp on grid stoppers.You can experiment tho but metal oxides I would not use except on the cathodes of output tubes.
Honest amplification is better than excessive 2nd order distortion anytime.
Edits: 10/07/14
Thank you for the concise answer, Mike! I will call you before I tear into some of my tube gear. Right now I have to fix my gas furnace, that did not fire up. I was able to fix the air conditioner this summer. They really don't seem that complicated. It is a DIY life for me! For audio, I have a Rotel power amp and a Revox turntable on the workbench.
Dave
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