jonboy55
Well-Known Member
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If my theory is correct, I'd propose that the 460T/460A was the initial load, and the 660A was an update/afterthought. If you look at the tube layout posted in the start of this thread, you can see where Fisher used separate diagrams for the tunner and the amp. This diagram is all one piece....:scratch2:
Could have also been that Avery ran out of his production run of 460As and decided to go with the 660A instead.
Thoughts?
Possible good explaination. I don't think the 460A's were used after that time.
Later I'm going to check the serial numbers of my Chadwick and compare it with yours. That may lead to something.
Also, I appreciate the photo of the 460A & 460T label. I'm going to make a copy because my other Chadwick is missing the label.
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