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Fostex Meets Pentode I need some NFB
Fostex Meets Pentode I need some NFB
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Old 25th June 2008, 01:32 AM   #31
planet10 is offline planet10  Canada
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Fostex Meets Pentode I need some NFB
Quote:
Originally posted by Wavebourn
I made pair from ancient Altec Lansing LC EQ.
When i was making my comment, my thots were that that approach might have a chance...



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Old 25th June 2008, 07:41 PM   #32
alexmoose is offline alexmoose  United States
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Applying cathode feedback (putting the cathode bypass cap to Speaker terminal in stead of ground) gave me ~7.8 db of NFB, I think I am going to try and reduce that to ~3db with a capacitive voltage divider. However Preliminary listening is disappointing, It sounds Kinda like a bad "Sand" amp, distortion is defiantly characteristic of Negative feedback being present. I am going to try a voltage divider to bring that feedback down, but It looks like Zobel is going to be the answer...
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