Tube amp acting very strange-- tubes switching on and off.
The tube amp when I connect an audio source to it, the sound comming out of the speaker that the tube amp is connected to increases in volume on and off at an oscillation rate of about 1/4 cycle per second.
Yes this is the same tube amp from my other thread.
The tube amp was working normally yesterday, but when I left my friends to use it while I went shopping, when I returned I found that the feedback of them having two mics right next to each other was terrible sounding and, and then I went up there and I smelled the magical smoke and ordered everything turned off imediately. Then after the tubes cooled down and then I turned the amp back on, when I ordered the vocalists to move farther apart, the feedback was gone, but the "tubes switching on and off" effect that I described above began occuring.
I try to make things idiot proof for my friends while I go to the grocery store 3 blocks away from my house and am only gone for half an hour, but it appears that the idiots just build a better idiot.
Well also its kind of my fault because I set up a tube amp that is a guitar amp to use to amplify mics and music since my PA is broken, and maybee that wasn't a good idea to use something for something its not meant to be used for.
Any hints what could have gone wrong and how to fix it?
New power tubes maybee? At least since its a tube amp, changing a tube is as easy as changing a light bulb with no sodering required (but the power tubes are much more expensive than power transistors).
The tube amp when I connect an audio source to it, the sound comming out of the speaker that the tube amp is connected to increases in volume on and off at an oscillation rate of about 1/4 cycle per second.
Yes this is the same tube amp from my other thread.
The tube amp was working normally yesterday, but when I left my friends to use it while I went shopping, when I returned I found that the feedback of them having two mics right next to each other was terrible sounding and, and then I went up there and I smelled the magical smoke and ordered everything turned off imediately. Then after the tubes cooled down and then I turned the amp back on, when I ordered the vocalists to move farther apart, the feedback was gone, but the "tubes switching on and off" effect that I described above began occuring.
I try to make things idiot proof for my friends while I go to the grocery store 3 blocks away from my house and am only gone for half an hour, but it appears that the idiots just build a better idiot.
Well also its kind of my fault because I set up a tube amp that is a guitar amp to use to amplify mics and music since my PA is broken, and maybee that wasn't a good idea to use something for something its not meant to be used for.
Any hints what could have gone wrong and how to fix it?
New power tubes maybee? At least since its a tube amp, changing a tube is as easy as changing a light bulb with no sodering required (but the power tubes are much more expensive than power transistors).
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