R-328: cycling rattle coming from rear control panel. Anyone else?
Hello I just purchase a R-328 from an authorized dealer- brand new unit, sealed. After setting up and turning on the sub, I can hear the faintest of rattle coming from the backside of the unit. It almost sounds like the amplifier is "idling". I'm not sure how else to describe it. Note: the rattle is NOT from playback, the sub unit is simply powered on in an "idle" state.
Do any other owners observe/experience this??