My speakers are currently spiked on a solid concrete floor through medium weight Berber carpeting. Does anyone know if Stillpoints Ultra SS in place of the spikes provides a material improvement in isolation from vibration under these conditions?
I would make sure your spikes are actually penetrating the carpet and sitting directly on the concrete. I used a sharp pointed X-acto hobby knife to make a small "X" so the spike actually sits on concrete. It made an obvious improvement.
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