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5R4GY

The 4uf spec on the 5R4GY seems way too conservative. In my main preamps, I use a 5R4GY feeding a 50uf or a 100uf cap, and I have had no reliability problems after 5 years. Both preamps draw a fairly hefty current at a moderate B+ (about 70ma at 240v in the preamp with 50uf, and 20ma at 400v in the one with 100uf). I don't know how this would translate to a power amp drawing, for example, over 100ma at 500+ volts, but in general it seems quite safe to operate the 5R4GY into a bigger cap than 4uf.


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Follow Ups Full Thread
Follow Ups
  • 5R4GY - Salectric 14:07:10 06/28/12 (1)
    • RE: 5R4GY - bouncy ball 18:45:17 06/28/12 (0)

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