Tube Amp Archive

I think I get it now, thanks man. I have some new 6v6GTA tubes from Mesa Boogie. I have been told they are Sovtech tubes and they will work in place of the original 6v6GT tubes that are in there now. I am happy to replace the old tubes but I am wary of firing them up without biasing them. I am not r...

The amp powers up fine. It plays but has some pretty raspy sound when driven hard. It's fairly complex but suffice it to say that the distortion from the preamp is really nasty above half or so. Under certain conditions the amp goes quiet. Playing at maybe half master volume with both preamp 1 and 2...

It may be the right resistor and I don't think it's the right schematic. If I understand correctly, that is the schematic for the 30 watt head. What I have is the 30 watt combo. The closest thing I can find to what I have is the schematic for the PT30 Series II. It has 2 6v6GT power tubes and 4 12AX...

Thanks guys. I'll look into the links you have provided. I took some engineering classes about 8 years ago and learned some of the basics of electronic circuits but it would be a good idea to refresh the memory of that. Do you think it would be better to do an amp kit before I mess with the little c...

Hello all, I'm Chris and I am looking for some help. Of course I am totally green with just enough theory to probably electrocute myself. I have been looking for folks who are interested in talking about amplifiers and the art of creating them and have found few willing to part with their wisdom. I ...