I do get a slight white noise from my speakers,but you have to put your ear to the tweeter to hear it..I would assume that is normal..But if yours is audible from more than a couple inches away from the tweeter something isn't right..Did you try removing the Audio Prism???
quiet hiss in backround?
i have a quiet hissing from speakers when no music is playing and i am sure it is there when music is on but hard to hear. it drives me crazy! i always attributed it to normal noise from my amplifier but i wonder what you folks think? is it a power issue? the amp is a krell fpb600c, dedicated line, no power conditioning (a small quiet line by audio prism (parallel power line filter) is all. is this normal?