I'd recommend going straight into the floor with the spikes. Putting anything between the spikes and the floor begins to defeat the purpose of installing the spikes in the first place.
And provided you do not drag your spikes across the floor the tiny indentation is so miniscule, only you will know they are there. (assuming of course that your speakers do not weigh 800 lbs each)
-IMO
And provided you do not drag your spikes across the floor the tiny indentation is so miniscule, only you will know they are there. (assuming of course that your speakers do not weigh 800 lbs each)
-IMO