Quote:
Originally Posted by Yamamaya42
I do have to wonder why they used 2 6BG6s in this version, and other versions have only 1, it's not a wimpy tube, (20 watts), does it use THAT MUCH power that they decided to 2x it to reduce the load on the tube?
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If you look at RCA circuits at the time the 16" round CRTs showed up, they also used two 6BG6s and 1B3's. The thought must have been they were pushing the single output setup too hard while scanning that larger CRT. As flyback transformers improved in efficiency they went back to a single horizontal output. And soon after there were stronger horizontal output tubes.