If i switch to a sound field instead of dd or dts, then i can hear voices again except i have to turn it up louder than normal, then i can sometimes switch back to dd or dts and it will work again. It's not my connections, it something with dd or dts, that is dealing with either my optical inputs or my reciever itself is failing. Just was hoping that someone would know exactly or has had the same problem. most importantly it's not ALL sound cutting out from my speakers it only the voices from all 3 front channels.