Hissing frustrated of Essex here! My Yamaha RX-V520RDS receiver sounds great through a pair of Eltax Liberty 5 mains, Eltax Bipolar rears and Celestion centre. No sub yet! The rears suffer from a high level of hiss which is present when the Toshiba SD-2109 DVD player starts playing a disc. This happens in DD, DTS or THX modes. If I put it in annalog it drops away almost completely. I am using a Coax connector. Anyone got any ideas please?