seti Posted November 26, 2018 Share Posted November 26, 2018 Scored this Fisher Friday and had it delivered. There has been some work on it that will have to be undone. Most phono sections will be removed, tone controls removed, and converted to PP triode EL84's. The tubes are all amperex... Good stuff. I love the sweaty worn in look like a little rat rod. Amperex GZ34 8-) This little resistor is smoked. 1 Quote Link to comment Share on other sites More sharing options...
moray james Posted November 26, 2018 Share Posted November 26, 2018 push pull 6BQ5 are a beautiful thing. One of only a hand full of tubes specifically designed for audio. I used to have a Dynaco ST35 all tweaked up that sounded excellent. Quote Link to comment Share on other sites More sharing options...
veloceleste Posted November 26, 2018 Share Posted November 26, 2018 . 1 Quote Link to comment Share on other sites More sharing options...
richieb Posted November 26, 2018 Share Posted November 26, 2018 ^^^^^ === it will. Quickies are good stuff. Quote Link to comment Share on other sites More sharing options...
tube fanatic Posted November 27, 2018 Share Posted November 27, 2018 Do I understand correctly that you are going to convert the output stage to triode operation? What operating parameters have you chosen? I'm curious as to the resultant distortion and power output you expect. Maynard Quote Link to comment Share on other sites More sharing options...
seti Posted November 27, 2018 Author Share Posted November 27, 2018 7 hours ago, tube fanatic said: Do I understand correctly that you are going to convert the output stage to triode operation? What operating parameters have you chosen? I'm curious as to the resultant distortion and power output you expect. Maynard I am just a solder monkey a good friend who has already helped me convert a Knight KB83 and another amplifier to PP triode over pentode does the design work. I need to get proper measurements for most of my builds/rebuilds. They sound great so far so I haven't questioned them. He has been a builder / tech for 30+ years or I wouldn't be monkeying with any of this. I will be ripping out tone controls and extras and putting in a nice phono stage. I dig the looks so won't do anything cosmetic. Ian Quote Link to comment Share on other sites More sharing options...
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