5881 Replacement for 6L6? - CORRECTION 6L6GB

[Bry Carling]

8417 is another fancy substitute tube for them...

> Turns out that the guy from whom I acquired my AF-68
> runs 5881's in his and is pleased with the performance.
> 
> Note:  The original spec is 6L6GB's.
> 
> I am guessing that a pair of 6L6GC's would run longer
> as the HV stress is lower.
> 
> I also see a 7581/A shown as a super-substitute.
> 
> --------------------------------------------------
> The 7581/A tube is an industrial strength version
> of the 6L6GC which is also said to be the American
> equivalent to the British KT-66.  The ratings 7581
> are roughly the same as the 6L6GC while the 7581A
> has higher ratings.   The 7581 has a plate voltage
> rating of 500 V--35 watts (5   watts more than the
> 6L6GC) and a screen rating of 450V--5 watts.  The
> Philips/ECG 6BG6 that we have were made from
> Philips/ECG (Sylvania) 7581A parts and have the
> same ratings as the 7581A.
> Source: http://www.vacuumtubes.com/6l6.html
> --------------------------------------------------
> 

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