I found likat's comment about not filling the stands interesting. Enough to check out the Skylan site. I did not realize Skylan stands are not steel. From their website... "Skylan speaker stands are MASS-LOADING. Strong, yet light, they are engineered with MDF and Polymer Extrusion." Mr. Nolan does suggest the use of some sort of filler, however the construction and material selection suggests a lossy design intent. Hmmm?
-Dieter