Noisy MH Ballast.

[Coffeeman]

I just bought a magnetic MH ballast kit from a local lighting store.I had a friend help me wire it up, the problem is its really noisy.I've heard ballasts humming before but nothing like this, after the bulb warms up it quiets a little but its still far too loud.I was wondering if anyone else had any idea's on why its making such a noise.Its made by Advance ballast and its brand new.