Hiss noise from speakers

Air leak-have your speakers sealed.

All electronics have some noise. If you have to put your ear to the tweeter that is normal with the volume turned up or a tube piece.

Don't put your ear up to the tweeter.

"Doctor, It hurts when I do this."
"Don't do that"

Thanks for all of the responses. I went to my dealer and listened to Classe & Krell - both of which exhibited some noise fromt he tweeters of B&W 803. I suppose I willjust live with this - not a big deal since I can't hear from my listening position.