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Audio and Video Talk
Valves / Vacuum Tubes
single-ended cathode follower output stage
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<blockquote data-quote="Mars" data-source="post: 570920" data-attributes="member: 817"><p>The critical element to this amplifier is the 250 ohm DCR of the primary in the output transformer. I recently stripped a Sansui SM12M amplifier, and when I measured the DCR of the primary, it was 250 ohms! Immediately I knew that these OPT's might work well in the Bates circuit.</p><p></p><p><img src="https://lh3.googleusercontent.com/-73_EU_duJBE/VUiiMSeqjgI/AAAAAAAAGK0/dK9aAj6PFps/s800/IMG_7667.JPG" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The Sansui uses EL84's in single ended mode in the output stage. I decided to build the above amplifier with EL84's and a readily available pentode like the 6AG5. (I have quite a few JAN 6AG5's in my tube stash waiting to sing)</p></blockquote><p></p>
[QUOTE="Mars, post: 570920, member: 817"] The critical element to this amplifier is the 250 ohm DCR of the primary in the output transformer. I recently stripped a Sansui SM12M amplifier, and when I measured the DCR of the primary, it was 250 ohms! Immediately I knew that these OPT's might work well in the Bates circuit. [IMG]https://lh3.googleusercontent.com/-73_EU_duJBE/VUiiMSeqjgI/AAAAAAAAGK0/dK9aAj6PFps/s800/IMG_7667.JPG[/IMG] The Sansui uses EL84's in single ended mode in the output stage. I decided to build the above amplifier with EL84's and a readily available pentode like the 6AG5. (I have quite a few JAN 6AG5's in my tube stash waiting to sing) [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
single-ended cathode follower output stage
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