i just got a new guitar ESP LTD H-500 w/ seymore duncans and usually tune the guitar to dropped D

whenever i strum a palm muted D chord (open on the 3 largest strings) i keep on getting weired sound that is really pissing me off. it sounds kind of crunchy or staticky and i cant figure out what the problem is, i'v been tinkering around with my amp (Crate 1200FlexWave) but nothing seems to do the trick,

what problem on the guitar would cause this?
my guitars
Esp LTD H500 with duncans
schecter C1+ (electric)
martin DX1 (acoustic)
johnson (crappy strat. knock off starter guitar)
Last edited by andy3391 at Mar 26, 2008,