[R-390] Tube plate voltages

[Perry Sandeen]

wrote:>I needed a couple of 7027's for a couple of old Globe Scout's I'm rebuilding

wrote:>If the plate voltage is high (550 or so) in the Scout, you can expect the Chinese tubes to
self destruct.

The design maximum plate voltage for 6l6’s is 375 volts.  The design max plate volts for the
12AX7’s is 350 volts.

If users are at or far above these limits, all bets are off as to country of origin comments. 
Yeah JAN tubes would take the overload better.  I’d like to use JAN 12AX7’s if I can find them at
a reasonable price.  My original post was to point out that on epay auctions, specifically 12AX7’s
are highly suspect.  From reputable dealers it is a whole different story.  Good scrounging to
all!  Perrier


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