Hi, I have a beautifully built Reisong A30 SET tube amp point to point which means easy to upgrade. Sounds incredible but I can’t sit too long without doing some kind of tinkering haah.
I wanted to do some capacitor rolling when something occurred to me. The coupling caps are 0.22uf at the manufacturer stated input impedance of 100Kohms the -3db cutoff point is 72Hz
So does this mean my amp will never be able to play music that goes as low as a pipe organ ? Even though my subwoofer and speakers can handle low frequencies?
Was thinking then that a higher capacitance would give me a lower cut off frequency for example 0.47uf would give me 33Hz.
I know the cut off frequency doesn’t mean anything below 72Hz is totally lost but what’s the margin ? Can it really handle very low frequency music and if not then would an upgrade to higher capacitance be better ?