11-05-2016, 10:29 AM
6C6 interchangeable with 6D6? A sharp cutoff pentode with a remote cutoff pentode?
My comments in post #2 also apply to trying to use a 6D6 in place of a 78. Where Philco calls for 77 and 78 tubes, that is what should be used. Not 6C6 or 6D6. Again, my opinion, YMMV.
Oh, I looked on my favorite online tube site - nj7p.org - and it lists 77 as a preferred sub for a 6C6; 78 as a preferred sub for a 6D6; 6C6 for 77 and 6D6 for 78. But again...in my experience, 6C6 for 77 and 6D6 for 78 in Philco sets will work poorly or not at all. Arran, you raise a good point here.
My comments in post #2 also apply to trying to use a 6D6 in place of a 78. Where Philco calls for 77 and 78 tubes, that is what should be used. Not 6C6 or 6D6. Again, my opinion, YMMV.
Oh, I looked on my favorite online tube site - nj7p.org - and it lists 77 as a preferred sub for a 6C6; 78 as a preferred sub for a 6D6; 6C6 for 77 and 6D6 for 78. But again...in my experience, 6C6 for 77 and 6D6 for 78 in Philco sets will work poorly or not at all. Arran, you raise a good point here.
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Ron Ramirez
Ferdinand IN
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