In 20+ years of listening, I have always preferred 3 feet instead of 4. In fact, I have yet to listen to any component where 4 feet sounds better than 3.
I also prefer the solid brass cones of Walker Audio over any other material including, aluminum, steel, soft rubber, hard rubber, plastic, felt, inner tubes, etc. And I have tried them all.
For a rectangular component, I also feel that it is possible to balance the overhanging mass on three feet by varying the area and location of the support triangle. I have even written and copyrighted a computer program to calculate the optimum placement.
I also prefer the solid brass cones of Walker Audio over any other material including, aluminum, steel, soft rubber, hard rubber, plastic, felt, inner tubes, etc. And I have tried them all.
For a rectangular component, I also feel that it is possible to balance the overhanging mass on three feet by varying the area and location of the support triangle. I have even written and copyrighted a computer program to calculate the optimum placement.