Originally posted by mesaboogie6l6
Why are you only using two power tubes and one rec tube? That is insane to me, there is only one reason you should be doing that, and that is if you have blown a tube, and don't have a spare. I think your amp will still be fifty watts if you are using two rec tubes, it still doesn't make any sense. If you want a fifty watt Mesa why didn't you just buy one instead? Do you have the right two tubes out? Power tubes are used in pairs, if you have four, then either the outer two should be out, or the inner two, that is the first and fourth, or the second and third. I wouldn't use the amp like that for too long man, seriously, get some new JJ/Tesla's in that thing right away, and don't forget the preamp tubes. You have a good dual rec., they don't make them like that anymore, take care of it and it will take care of you, seriously.
congratulations on coming off as an asshole. he's allowed to run his recto however he wants.
why didnt he buy a 50 watt recto if he sets his dual at 50 watts?
-single rectos (50 watts) dont have a rectifier tube.
there is NOT only one reason to do that. the main reason hes doing that, is exactly how he described. he wanted to run it with lower headroom. hes allowed to do that.
oh, and to top it off;
you never even bothered with what he was asking.
i've heard of similar issues with the recto series...except it was popping, not volume swells. my guess is its a preamp tube issue: easy fix is to swap em around, see what happens. altough it could be a poweramp tube...my guess is no. easy way to diagnose is to get it retubed. if theres still a problem, take it to a reputable local tech and he should be able to fix it for you.
you might also want to try it with a different footswitch. mesa's are touchy...it might just not like your footswitch.