i have towers and stuff already i just never hooked up a sub because i dont have one. and i have a space under my stairs that is next to where the tv is so i figure i would get a good sub sound from it. and i guess i could do more then one but why? ill have a qsc 400 studio amp and maybe that eq i have in gerneral discus.a home sub...and its in your closet? You could get a cheap-o walmart surround sound system for 50, with a sub and 5 speakers and all that...why just the single sub?