Power amp humming - help please

My Krell Kav-3250 power amp has a noticeable slight hum constantly when on - and different pre produces different amount. What could be the culprit?

Thanks in advance...

gongli303-10-2021 4:59pm

...
15 posts total
View entire discussion

gongli3 OP Details Discussions Posts This discussion Message User 92 posts 03-10-2021 at 09:27pm Copy Comment URL Report Comment Edit Delete mijostyn, excuse my extreme ignorance on Hifi, but how do I put a ground cheater on the amp's power cord?
gongli3 OP Details Discussions Posts This discussion Message User 92 posts 03-10-2021 at 09:31pm Copy Comment URL Report Comment Edit Delete The hum is coming from the speakers and not the amp, mijo...
fuzztone Details Discussions Posts This discussion Message User 5,636 posts 03-10-2021 at 10:12pm Copy Comment URL Report Comment Edit Delete Right!!!
lowrider57 Details Discussions Posts This discussion Message User 5,418 posts 03-10-2021 at 11:59pm Copy Comment URL Report Comment Edit Delete Test the amp with a cheater plug, an adapter which removes the ground. https://www.target.com/p/general-electric-2pk-grounding-adapter-polarized/-/A-14442316?ref=tgt_adv_X... If it removes the hum then you have a ground fault somewhere.
gongli3 OP Details Discussions Posts This discussion Message User 92 posts 03-11-2021 at 08:30am Copy Comment URL Report Comment Edit Delete Thanks so much lowrider! I ordered it. Later, please help me find the ground fault - I have no idea how to do that - excuse my ignorance on electronics...I just love music.

15 posts total
View entire discussion

More to discover