Originally Posted by
Kev Williams
130 watts-- do you have a mA meter on that thing? I'll assume you do...
I believe 30-ish mA is about upper limit for a 130w tube-
set your machine to run a vector pass at full power... set your speed at 100 and your power at 65%.
Watch the mA meter- if it's running above 30mA, then lower the power in 5% increments till it's no more than 30mA...
Likewise, if it's below 30mA, raise the power until you reach 30...
Whatever the entered power percentage is, THAT is your "100%" power setting.
Example, my 80w Triumph hits a solid 26mA at 70% power, so 70% entered = the machine's 100%, 35% = 50%, etc.
If your outputs are similar, then the 30% power you set would be around 60 watts actual output, which may be a bit high?
Actual output is good to know so you don't overdrive the tube - you CAN go beyond, but tube life will be shortened...
Try running the same thing at 15% power and see what happens..