OK, so I bought 2 sets of new Studio 20 v2's a year or so ago to complete my 7.1 (when Paradigm was rolling over to v3), but at the time had no space to set them up. You see, I was planning ahead for a HT in a house, which has now come to fruition. So, two of the speakers make buzzing (or maybe you'd characterize it as crackling) sounds when playing pink noise test tones. I tested them when I bought them before and they seemed OK at the time. Thus far I've relegated them to the rears, but I was wondering if anybody knows what's what? It could be that they just need broken in (although I didn't notice this phenomenon with my other 3 speakers), or maybe something else has gone wrong. There's always warantee repair (once I find the receipt), so I'm too concerned. But I wonder if they'll improve with use? Thanks, Martin.