Re: Bass drum head help
I'm not saying that this is the cause of your problem, but many of the drums in the Gretsch Renown series have had trouble with loose vent holes. If you want to dismiss this as the problem, just put you finger over the vent hole and hit the drum. Two of my rack toms had this problem when they were new.
Another thing that it could be is maybe the bass drum is causing a stand to rattle or have sympathetic vibrations that is affecting some other metallic object. We're always tracking noise problems such as these in the studio.