Isolation pads for the speaker stands

I had the same problem. My stands now have the little clear dots that are used for cabinet doors to keep them from the wood door coming in contact with the wood face of the cabinet(three on each corner). It didn't matter where I moved the stands either. It's something the cabinet is doing and has nothing to do with placement.

If you have the time and patience,try changing the amount of sand filled in the stands..I have found ( using Skylan Speaker stands ) that the amount of fill required for best sonics in fillable stands has a lot to do with Speaker cabinet construction..Thin wall speaker cabinets react much differently than thick wall speaker cabinets..Sonics can change considerably ( good and bad ) from the amount of fill in Stands.....I ended up filling only 1/3 of stands.....

I put some Vibrapods under my Silverline Preludes not really expecting anything (I mean really...I've been spiking speakers into floors for decades...wasn't I supposed to?) and I'm amazed at how well that works. Highly recommended as a really cheap tweek...I guess it has something to do with keeping energy out of the floor where my sub lives (the sub remains podless).

THORMAN
Thanks for help. I also have Skylan stands and Carbon 7
speakers with the thick walls. I will try today to remove
sand from the columns.

I would try removing the pads, giving a hard coupling between the speaker and the stand. Small spikes, wood buttons, etc. Anything that isn't squishy may firm up the sound.