I would say 2 seconds is probably normal, do you want it just to go away right after striking it? Try 2ply heads or tune the bottom head tighter. Using coated Emporers and cranking the bottom head up worked for Bonham on his Ludwig kit.
Good point, and worth trying on the floor tom. Thanks!
But to go back to the snare problem, it has a godawful metal overtone, like beating a lawnmower blade with a hammer. The snare is a 6.5x14, maple wood. Evans G1 coated on top, Evans 200 snare on bottom. My normal tuning is to tune the batter maybe a third higher than the reso, with "medium tight" spring tension.
This tuning works for me on my other snares (wood and brass) but for some reason, this DW snare hates me. I've tried all combinations of tuning and spring tension, and the only thing that fixes it is running a strip of cotton under the batter head.