more scope stuff

[surfsup]

So here's a few scope shots for you guys as I mess around w the new scope. Input signal of 30mV (if my DMM can be trusted, measuring the tip of the input jack I see 0.03V). The amp is basically a liverpool with the TS between the 2nd and 3rd stages. 2xEL84

So I'm wondering, there's a little bit of 'rounding' to the blue trace's negative side in the first shot, and no rounding of the top trace's positive side. What might be causing that...?

[surfsup]

I see even though i use two 100k resistors on the same tap, the plate voltages for each triode are off by 25volts. I assume this could likely be the root cause. I noticed on many schematics the PI has the same value Ra for each plate, and on many others, the PI has 100k/82k or slightly different resistors. Am i looking for the same voltage on each plate pin to balance the PI?

[vibratoking]

There have been some good threads about PI adjustment in the Dumble discussion section. You might want to take a look at those. The simple answer is that you are looking for the same AC voltage. This ignores other sources of imbalance such as the OPT and tubes, but it will get you close.