Hey! I bought a Engl Savage 60 this past weekend and while it sounds great it has this really annoying hum that I haven't experienced before going on even if the master is zero.
Any ideas what to do? Powertubes? Pre amp tubes?
I recorded a video example. It goes humming for real in the middle of the clip:
[VIDEO]http://www.youtube.com/watch?v=kS5frRh_vIw]YouTube - ‪Engl Brum‬‏[/VIDEO]
Usually i would say that is a microphonic valve
Try prodding the valves one by one with a pencil or a chopstick to see if it causes it.
i am unsure as to whether this would still happen with the master on 0 though logic tells me it shouldnt be amplified in that case...
Do you have anything in the loop?