I own a pair of Biro L/1 and some nice heavy soundstyle stands and I put mousepads between the speaker and the stand. The cheap basic black ran me $2.99 each and covers the entire top plate (make sure they're the squigy kind, some really cheap ones are thinner and harder). I did it just to protect the bottom veneers from the metal and because I wasn't crazy about using the spikes and driving them into the bottoms of the speakers. I guess the mentality behind the spikes is that it keeps the speaker completely stable/anchored to the stand so that it doesn't "rock" when the woofer has those heavy duty excursions and to minimize vibrational energy that may transfer into the stand and cause ringing. However, if the cabinet is completely non-resonant, the ideal, then I don't see how it should matter. So I'm just using the mousepad for protection, and if it does do anything for the sound, its extra.