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RE: RCA 807 in Heathkit W5

Posted by Eli Duttman (A) on March 19, 2016 at 13:09:38

In Reply to: RE: RCA 807 in Heathkit W5 posted by Mechans on March 19, 2016 at 12:29:46:

Heater current is not a problem. The W5M schematic calls for KT66s as O/P tubes and the KT66 draws more heater current than other 6L6 family tubes draw.

Compare the 2 types' data sheets.

http://www.mif.pg.gda.pl/homepages/frank/sheets/084/k/KT66_GEC.pdf

http://www.mif.pg.gda.pl/homepages/frank/sheets/084/8/807.pdf

It looks like the KT66 is rated for a bit more plate dissipation. Installing 807s in a W5M should be OK, provided the amp is not pushed to its published limits.


Eli D.

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