Quote:
Originally Posted by Crist Rigott
The focus on the 5AXP4 is much better.
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Boost the line voltage another 10 volts or so. See what the focus and brightness looks like then. You installed E'caps, that were rated for higher B+ so no worry.
I just looked at an old Sylvania tube manual for the specs on the 21FP4 and it shows the focus voltage, rated between -200 to 1KV on pin 6. I don't remember seeing, that kind of voltage used for E'stat focusing. It was always between ground and boost.
