DIY speaker isolation base for a wood floor


A definite sonic improvement in tightening up the bass. 
1. Start with 4 aluminum cones. I used some old Mod Squad Tip Toes.
2. 16x16 slab of granite.
3. 1/8 cork.
4. 1/2 inch neoprene rubber.
5. 1/8 cork.
6. Top with another 16x16 slab of granite.
7. Enclosed with a wood cradle to hide the mechanism.
  The granite is from scraps from a shop and was cheap. The added 1/4 inch of neoprene to 1/2 inch thickness did help. Let me hear your thoughts.
128x128blueranger
My dual-layer iso platform Nirvana employs two very heavy masses 18x18 like granite or bluestone and two layers of springs. You can achieve extremely low resonant frequencies Fr with this set up, circa 1.0 Hz. Hel-loo! Total cost you ask, about $100. You supply the granite or bluestone. Cannot beat with stick.