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Single Ended Triodes (SETs), the ultimate tube lovers dream.

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RE: Determining the size of inter-stage coupling cap

Posted by used-hifi on January 23, 2017 at 10:29:13:
Quote: When the coupling cap is too small you can get an audible increase in the level of the low frequencies. Some use this to "tune" a system.

I am using grid chokes.
I want to make a comment on this because I did tune it to have very low -3db point which looks real good on testing, it but in reality there is NO useful POWER in the added resonance! once I added a larger 5uf coupling, much more useful power in the lower ranges.

BTW there is nothing wrong with larger coupling capacitors as long as you have good ones :)

Lawrence