I have a pretty interesting problem with my speaker setup. I have a Panasonic SA-PT770 (two wired fronts, two wireless rears & sub), and about half the time, if there is complete silence proceeding audio, the first maybe quarter second of the audio does not play. I am thinking this is an issue with the receiver, as it was a floor model. The TV is connected to the receiver via an optical cable, however, so that could also be the problem. I made sure my wireless transmitter is in direct view of the receiver, and all cables are properly inserted...I have no clue what this problem could be...could anyone help?