I'm getting an intermittent fault with my sub, now and again it just cuts out altogether. When this happens I have tried unpugging and re-plugging to no avail but if I pull out the sub cable and replug it, then it works for a while. I have tried using a standard phono lead and although the sound quality was terrible the problem stopped. Could it be a faulty lead? p.s. I have an REL Quake and a pioneer vsx-c300 receiver.And I am using the cable that came with the sub.(problem happens on ntl and dvd) Thanks.