My system is also on a wood floor. I use 3/4x15x24 inchs slab of Granite under each spiked speaker. I work in construction and get it free. When a builder puts in granite counter tops in a kitchen the sink and built in range top are cut out and left as scrap! Check a few sites, talk to a few supers. For a six pack of beer and ten bucks the installers will trim and size the material while you wait.
Granite Under Speakers Over A Wood Floor
I would Like to use something over my wood floor that would not scratch it like the spikes do. I remember seeing sonus farber speakers on granite blocks. Does anyone have any experience with this? How would this sound?