I recently bought a pair of Polk R20 to go with my old Technics receiver. However, just picked up a bargain Panasonic XR25 receiver at Sears to replace the Technics. Also have an old center Bose. Would like to add a subwoofer. This one is currently on clearance at Sears for half of the original price (about $140 now). Any one know anything about the Cerwin Vega? Would it be workable with the Polks? Thanks in advance.