We've had this Samsung HW350e Sound Bar installed for several months now. I used a Digital connection hooked into the cable TV box after having trouble with sound delays and that seemed to correct the problem. The problem now is that the "Smart Volume" doesn't seem to work properly. There are varying degrees of volume changes between channels, commercials, etc and the "Smart Volume" doesn't seem to be regulating the volume. We almost have to switch back to regular volume operation and adjust as necessary. Any suggestions?