AC30/6 treble low output and thin sound. (Problem solved!)

[Dingleberry]

Now wait a minute pardner....
In your first post you said you tested it with different speakers.

Yeah I did... and I think I accidentally used low gain jack input when I was testing it with another cab.
That was probably why it confused me at that point.
The "upper" row of jacks seems to be the low sensitivity inputs and "lower" row high sensitivity in ac30/6.
Man should never assume things.
Lots to learn every day.

-T