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5R4G and 5U4G condenser output value

Posted by DAK on January 21, 2017 at 11:55:04:
The specs call for 4 uf. How important is this value for the safety of the tube? I found a stash of Brimar 5R4G but my input condenser is 12uf. I don't see many Brimar's for sale so i don't want to blow it up. But, it would be nice to check them out in my SE amp. It is a nice tube looking at the construction.