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If you are using Mesa branded tubes, there is no way you have the wrong color in the amp.I think the plate voltage in a Recto is around 475 volts. So at 34mA on a 6L6, you're running fairly cool (70% dissipation should be around 44mA @ 475V) To measure plate voltage, use pins 3 and 8.http://www.webervst.com/tubes/calcbias.htmThat is a bias calculator that you can use to find the safe limits for tubes.
If you are using Mesa branded tubes, there is no way you have the wrong color in the amp.
I think the plate voltage in a Recto is around 475 volts. So at 34mA on a 6L6, you're running fairly cool (70% dissipation should be around 44mA @ 475V) To measure plate voltage, use pins 3 and 8.
http://www.webervst.com/tubes/calcbias.htm
That is a bias calculator that you can use to find the safe limits for tubes.
