One mod to the Sanders was creating a resistive load for the amp out of a long string of ceramic wire-wound resistors on a spacious fiber board.
With the big gain of the early stages and the somewhat strange arrangement of the feedback around both sides of the output tube stage, much risk of high frequency oscillation. Having a super-sonic bandwidth has never been a goal of mine (ever test your hearing over 15,000 Hz?). So I may have rolled off the frequency response earlier than a purist might.
With the big gain of the early stages and the somewhat strange arrangement of the feedback around both sides of the output tube stage, much risk of high frequency oscillation. Having a super-sonic bandwidth has never been a goal of mine (ever test your hearing over 15,000 Hz?). So I may have rolled off the frequency response earlier than a purist might.
bentoronto do you still have that amp?i have been wanting build a pair myself.how was the performance and what if any problems did you have.tubes are getting rare thease days.i am working on a solid state version.I started a compact tl with wire stators but haven't finished them yet.i have 6 3foot stators finnished .haven't decided to use clear acrylic enamel or to have them powder coated in clear.im very good with electronic circuits proper layout and bypassing will cure most any rf and parasitic problems. jer
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