My room is 13x20x6; will have Sony36XBR & C recessed in short wall; L/R prutruding ~1.5'; 2 side, 2 rear surrounds. Question is where to put the sub? I had planed to place it in the corner of TV wall-=-say, 8' cable. A friend swears that so placed I'd get objectional directivity regardless of common presumptions. If I place it at the rear, the cable runs might be 25' by the time I route thru walls. Would apprciate any experience you care to share.