Question about Behringer Bugera 333212 120W 3 Channel Guitar Combo Amplifier
Change your power tubes. Bugera says they are matching sets but they aren't. Buy from euro tubes they match their tubes within 1ma of each other and they sell amulti meter with a bias probe for 35 bucks
Posted on Jul 02, 2011
Microphonic tubes can be detected by tapping them lightly with a pencil. I cannot find if this uses a spring reverb, but if it does, vibrating the cabinet will get a clanky type sound from the reverb tank. This MAY use a digital reverb however which is immune to that. Next thing is to make sure your guitar can't "hear" the output sound of the amp because the strings can pick up the sound and resonate feeding back into the amp. You can detect if this is happening by quickly dampening the strings and see if ringing gooes away. You probably need 6 to 10 feet of clearance between the guitar and the amp OR put your body between the amp and the guitar. ALWAYS set sound level at safe levels. Get a sound meter and go no higher than 90 Db. I know a lot of near deaf musicians whose careers are near over because of hearing loss using too high level.
Posted on May 24, 2011
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Posted on Jan 02, 2017
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