SET Asylum

loosing signal strength?

69.168.218.105

HiFiOd

My 45 amp (Sonic Oil Korneff 45 clone), has somehow started to sound weaker and more distorted, I have swapped driver tubes as well as output tubes to some slight improvements, but I really am afraid that there is something else making the output less powerful so it clips very easily- could it be a cap or a bad connection somewhere?

Follow Ups:

RE: loosing signal strength? - Todd Krieger 22:46:12 08/28/24 (0)
I've noticed that direct-heated triode tubes like a Type 45 or Type 10 gradually lose output level over run time...... Although the decline in level is so gradual, it would take at least 500 hours to notice such decline, with an unused tube to compare with. And tubes with 2000 hours of play time shouldn't sound noticeably worse than unused tubes, just a decline in output level. A sonic decline should only be noticeable with at least 3000 hours of run time.
Not familiar with that amp - Steve O 19:17:14 07/23/24 (0)
Does it use a rectifier tube? If so, is it good?
RE: loosing signal strength? - 6bq5 17:03:38 07/22/24 (0)
If replacing the tubes did not 'restore' the amp, then you are likely loosing something through a failing Cap, and less likely a resistor or two...
Happy Listening

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