Bill Ferris
Lunatic Member
Also FWIW, on any new to me "music reproducing" power amp in for repair or bench check up, whether tube or SS.
When driving it to clip during check out, I don`t want to see any ripple riding the top of the waveform at full rated power output(clean thin horizontal clip line on the scope), which if the main PS capacitors are in decent/fresh shape then I interpret that the capacity of the capacitor/s are undersized and depending on the type of gear and ownership, and will usually desire to up the PS caps value/rated voltage..
How much over design, or current values, will be determined by the device, of course, and it`s use.
Just enough-- isn`t enough for this old guy..
Some Sponge in PS`s are "usually" only good on both tube rectified, or not, tube guitar amps IMHO & E, but still should have a clean clip line.
Because good players can skillfully "work" that PS sponge compression as part of "their expressive tone" and make their amp sing.
Again, just my $.02`s worth.. Take care, Kind regards, OKB
When driving it to clip during check out, I don`t want to see any ripple riding the top of the waveform at full rated power output(clean thin horizontal clip line on the scope), which if the main PS capacitors are in decent/fresh shape then I interpret that the capacity of the capacitor/s are undersized and depending on the type of gear and ownership, and will usually desire to up the PS caps value/rated voltage..
How much over design, or current values, will be determined by the device, of course, and it`s use.
Just enough-- isn`t enough for this old guy..
Some Sponge in PS`s are "usually" only good on both tube rectified, or not, tube guitar amps IMHO & E, but still should have a clean clip line.
Because good players can skillfully "work" that PS sponge compression as part of "their expressive tone" and make their amp sing.
Again, just my $.02`s worth.. Take care, Kind regards, OKB