Tube Amp Archive

Thanks Ian, that explains a lot. Yeah hitch, I already try the coupling caps and they didn't help at all. Do you guys think that putting a big resistor (say 10 watt, 1k) between the B+ supply and the choke would at least tame down the screen voltage to the tubes enough that they wouldn't red plate a...

Hey gltdp99, fancy seeing you here. I've found that some tubes are better than others but I have yet to find a cure for the imbalance. I've read the article you linked before but it fails to give any explanation for the imbalanced signals other than the output section is overdriving, which doesn't t...

thanks man, do any of you guys know anything about the cathodyne PI? My understanding is that it's supposed to be more balanced than the LTP but for some reason it's not when I crank mine.

Hi, hate to resurrect this old thread on my first post but it's not really worth starting a whole new thread for the same issue. I've been dealing with a problem similar to this with my Orange OR120. It's got a 1.9k primary impedance on the OT@16 ohms. The plate voltage (using a variac @115vac) is 4...