Would like some advice about isolation of speakers that are used on suspended wooden floors. My hi fi speakers (Dali Royal Towers) are floor standers that have spike feet. These go straight onto my susended floor, is it worth trying isolate them further with granite slabs or squash balls etc. Now my AV speakers (MA 270's fronts, 90's on stands rears and RSW12 sub) are on the same floor type but the books say to use the suppiled rubber feet not spikes, but I think this is for solid hard floors. So the same question applies is it better to remain with the rubber feet or go with spikes and use squash balls / granite etc?
Appreciate any advice