I have a HK AVR520 hooked up to my Axioms. I notice that there is a squelching distorted sound from the speakers (very slight but noticable) when I use my satellite reciever (dish network) . When I run the DVD or the CD player the audio is crystal clear.

Is this a by product of using a satellite receiver that does not have optical or coaxial outputs OR is it just the nature of satellite TV?

-Steve