Hi Fpeel; I have not compared the two different acoustic tubes you mention, but I do have 5 11" dia. ASC tube traps and 3 15" X 4ft. panel traps. I like the ASCs because of their versatility; when one side faces outward all frequencies are absorbed, but with the other side out, the tube will reflect all frequencies above 200 HZ (and absorb below). And of course if the tubes are turned partially, they will reflect/absorb differentially. It is very easy to hear differences as the tubes are turned, and thus you can "tune" your room to your taste. The panel traps absorb down to 200 HZ (I believe), but do not reflect. The panels are very good at controlling first reflections off walls. If I had it to do over again, I would have a couple of 16" tubes for the corners behind the speakers, but they are quite a bit bigger and more expensive than the 11" ones. Can't help with the cube traps. I don't think they have reflecton and absorbtion sides built into opposite sides though. Cheers. Craig.
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