Just picked up the Hartke LH1000 head and its awesome but I'm pissed that my GK Ultralight Series 4x10 and 1x15 are farting out with it. At first I thought it was that I was pushing too much EQ so I lowered it. It certainly helped the issue and now I get the farting only on my B-string occassionly if I play a little to boiseterously on it... I still think its an eq issue but oddly i can play my open E fine then same note fingered on Bstring and it can fart. Now granted i previuoslu ran a GK 700rbii thru the same cabs fine and the Line6LD400 with no issues. Now it says the GKs are 400 watts speakers @ 8ohms so technically it should be fine...but its not... Any thoughts or similar experiences? I love the head and the cabs and I really don't feel like buying another cabinet.. but a farting cabinet at a gig is way more embarassing than a farting bassist.