I have a PhilipsCineos HTS9800W DVD/SACD Home Theatre System that was working fine,,however it has suddenly started getting sound distrortion on the front left and right speakers on the same dvd that i could play much higher volumes (33) than it will allow me to now. Have i blown/damaged something its normal sound until i get to 19 on the volume, although the front left and right speakers seem quieter than the back 3.