Hello>i have purchased a cs10 centre channel and having some issues,hoping I can get some help here.I have polk audio 5.1 surround speakers model RM6751 that came with subwoofer and centre channel RM6752,I purchased a new polk audio cs10 centre channel but when I watch movies or tv I dont hear anything from that centre speaker,I have my computer hookup to my reciever sony str-dh810 with s/pdif output on my sound card to the reciever,when I test the centre channel trough my souncard i get a signal on centre channel,but when I watch movies or tv i get no sound trough the centre channel only the side speakers.