Thanks. Ive been pretty successful at doing my own amp mods, cap changes, etc. I just dont go around on forums flexing muscles on how or what ive done an can do to a vacuum amplifier. Basically i posted just warning others with a bass prodigy, to not try to peak out the amp only on half power. Ive tried to explain to others who seem to be gurus on power tube amps that I believe mesa may have should have put an extra or two power tube in the four 88. If u look at almsot any other older, very reliable bass tube amp, youll see that even the 100 watters have atleast 4 6550s etc.... basically, i see that so far, that the four 88 is a cute, small footprint all tube bass head that cant take a round house punch from a bass string at 125w (probably was peaking close to 150) on two kt88s. Now it may be a problem with too high of a bias, cap issue, on and on. And when or if i blow another tube, off to mesa it goes. I dont plan on trying to blow another tube, but just in case. I just cant see a all tube 250w all tube head, get man handled (volume wise) and actually played like it should be, only housed with only 4 kt88s.
And of course i removed the copper and installed another fuse with a new cap lock, and , wired a 3 prong plug to it. (Then sold it for $300 lol) but sorry if it seemed like i was slinging poo on you electrical techs, i just dont have a degree in industrial electronics and dont know most of the terminology. Hell how hard is it to drain the caps and watch you tube vedios on how to build a diy amplifier......j/k.