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?
128x128gammajo
I agree with TWL, except I'm never at a loss for words. I think this thread is a vintage argument for the old saying what ever works for you must work. There are just so many theories regarding vibration control it's tough for folks like Gammajo and I to know what might work for our systems. Some one sez that spikes couple but cones isolate. Dense rubber couples. Lossy rubber isolates. The difference is(?) the mass of the speaker/stand. Who's to know. Then there is the "drain vibration" school of thought, which makes sense to me if you are talking about draining vibrations from a component which are exciting it's resonance frequency, but how do we insure that the materiel used to drain off this resonance actually passes the resonance frequency, and what happens when the devise actually hits it's own resonance frequency. Then there is the issue of vibration/resonance amplitude. At what point do these vibrations and resonances become audible significant?

Wow. Poor Gammajo has no more a solution to his question now than when he first asked his question. :-)
Hi Joe,

Optimally, the speaker will be place on the Plinth (top plate) of our Big Rock platform. The special coating on our products is not only non-resonant, it is slightly textured. This textured surface has the ability to contour to the bottom of a speaker allowing a significant increase in contact area compared to placing the speaker on a standard hard surface. We do not want a compliant material between the speaker (or other audio or video component) and the Plinth of the Big Rock. The Plinth is the conduit which directly routes the unwanted stored energy out of the component and down into the bed of sand where it is effectively dissipated as thermal energy (heat). It is critical that the vibration (mechanical energy) be dissipated as quickly as possible and placing the absorptive element as close to the component as possible is best for maximum efficiency. Attempting to route that energy through a multitude of materials and down into the floor (as most spike or cone manufactures describe) is not nearly as efficient or effective.

Best,

Barry
I personally am enjoying the thread, being the curious and obsessive type. I want to penetrate to a good understanding if possible. All your comments are helping me do this. I think I am leaning right now to just putting a big rock on top of my speakers and resting them directly in sand, lol. Unless of couse Barry's product is cheaper than I expect - just kidding Barry, you have been devoted in trying to explain this and I appreciate it emmensely and asked for a price quote today.
I am also an very intuitiive guy - make a living teaching meditation, and intuitively I dont like spikes.
Joe
The best part of my day is when I turn on the music. As a thank you gift for all of you who have responded, I would like to turn you on to two recordings that I have recently purchased that are splendid. Both recordings are beautifully done. The first Is Al Lee's Ain't Playing the Game by MapleShade (acuostic guitar, great lyrics described as James Taylor with cojones). The second is Arcadi Volodos Piano Transcriptions by Sony - amazingly beautiful in everyway.