#1
I have a Peavey Transtube Supreme Head running into a Peavey XXX cab.

and even with no guitar...or cables hooked up it is making a buzzing sound...
aside from purchasing a noise eliminator....
is there anything to do to remedy this problem?
Total Failure

If every dream is a wish, then to dream of zombies is to wish for an appetite without responsibility
#2
it's prolly electrical interference. if you have any kind of power cords (amp, for pedals, etc) crossing instrument cables, that will cause interference. try moving the two where the're not touching, or if you have to cross some, make sure they cross at right angles.
My Gear:
Fender Stratocaster Deluxe HSS
Hagstrom HIIN
Crate Palomino V32H w/ matching cab.
Roland Cube 60
Roland Micro Cube
BOSS ME-20
Digitech Bad Monkey
Art and Lutherie acoustic