Ya know, Bestbang brought up an interesting paradox. On one hand, our GRAMMAs decouple our speakers from the floor. OTOH, spikes attempt to couple 'em to the floor, even through carpeting. Seems to me decoupling would take the quality/makeup of the floor out of the equation. Wouldn't a speaker floating in midair have the least physical interaction? All I know is, the GRAMMA tightened up the bass coming out of my lfm. Seems like a cheap fix to me!

Jay