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Old 12th Jan 2021, 3:12 am   #21
gkargreen
Triode
 
Join Date: Nov 2006
Location: Fairfax, Virginia, USA.
Posts: 25
Default Re: Leak Stereo 20 rebuild questions

Thanks snowman, the caps across the 12K resistor is a 150 pfd, I am guessing the cowboy didn't realize the twp silver caps were across the 12K and just made up the feedback loop with what he had, same with the 1 meg, the schematic shows 1 meg but as you correctly identified the output trannies, I have replaced the 1 meg with 470K resistors. Radio, I agree with making changes to the feedback loop, we do have a guy in the states that actually does quite a bit of work on feedback loops and frequency shelving in those amps that need them reworked from the original, like the Eico HF87, various Heathkits, etc. He goes into quite a bit of detail on those changes and follows up the before and after with scope pics, I think that Dave Gillespie knows what he is doing, but not the cowboy who worked on this one!
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