Spikes versus wall coupling


I have a Polk SRS-SDA 2.3 speakers. They are 185 lbs each and currently sit on thier furniture glides on a maple floor, over subfloor, over trusses. No carpet. They have a passive radiator for lowest base at the bottom of the cabinet, and I roll to a subwoofer at 60HZ. I like to move them occasionally so have been reluctant to use spikes.

My question is what am I really missing sound wise? And would wall coupling do as well as spikes. I can put them on some marble slabs,as another alternative, or remove the glides and have the bottom fully sit on the floor, o rthe marble. I do not have a turntable. Or should I spike them despite the hassle?
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Showing 1 response by mike_zundzgud

I'm a relative newcomer to to this, so if I am coming from left field, forgive my ignorance. They are many materials, polyurethanes and foams for dampening vibrations and absorbing sound. Wouldn't using some of these things work? Sorbothane absorbs shock and vibration very well. It is an expensive material, $105 for a 1/4"x24"x24" sheet, but it seems it would be very effective in dampening vibrations coming off of a speaker and stop vibrations going to a speaker, CD player, turntable, etc., etc. etc. There are sound absorbing panels and vibration damping coatings that you can apply like paint to ventellation ducts and sound/vibration dampening panels that could be used under the flooring to improve the overall accoustics of a room. I looked in the McMaster-Carr catalogue and found a lot of sound and vibration control stuff that seemed would be perfect for tuning a room or controling unwanted vibrations and sound. Why not use some of these materials? Am I all wrong on this?