Hey there,
Welcome to the forum! The 534-SS really isn't designed to go on a stand both because of its odd shape and because it's ideal height is about five to seven feet and most stands top out at around 3 or 4 feet.
If you absolutely have to use a stand, something like this stand would be best because it will accomodate the 14.25" width and at least get the top of the speaker over four feet off the ground.
http://www.standsandmounts.com/index.asp?PageAction=VIEWPROD&ProdID=4639
Jason Hicks
Aperion Audio Guru