KMD GV100S Schematic

[grazzze]

I got this amp new in the 80's,Tried it once and gave it to my soundman.30+ years he gave it back to me.It has 8 10' celestions with 2 6L6 GC'S And a solid state pre amp.The soung is loud and clear,but it seems to have a little pulse of distortion in back of the notes I play.Almost like a shush sound trailing the note.sounds compressed .Any Ideas or a schematic,so I can get it fixed.Thanks I also dont know how they get 100 watts out of 2 6l6's,Is it that 100 watttoroidial xfmr.It sounds like 100 watts RMS.