[mcmusicman]

Yep.  Too much vibration from my hardwoods.  So, being the eternal cheapskate, I found some practice sponge hockey pucks for $19 per Dozen in a bag.  $1.66 each.  Put them under my regular hockey pucks for stability and Voila....vibrations drastically mitigated. Not too soft, not too firm. My Tube Preamp greatly appreciates them but I doubt this will help my Hurricanes play any better.

https://www.amazon.com/dp/B00EW01TIQ?psc=1&ref=ppx_yo2_dt_b_product_details

[mcgsxr]

I use orange sponge rubber pucks under a DIY subwoofer as the "feet" on hardwood.  Super simple and cheap.