Crutchfield has the Alpha's on sale. I was thinking about purchasing the Alpha 20's and matching 37C Center for $450.00 then getting the free pair of Primus 150's. This would normally cost $980.00 from them! Are there deals at the moment that compare to this? Also, is it possible to use another set of the 20's as my center instead? I have issues with the 37C being rear ported into my entertainment center.Thanks!