I am hearing the same thing too. Did not notice until you guys pointed it out. I normally have mine turned up and very little dead air. My setup:

Outlaw 950
Adcom 7500
Monsterpower HTS3500
Apex DVD (Coaxial digital)
JVC Cd Changer (analog)
JVC VCR (analog)
RCA TV (analog)
Axiom Epic 80 w/o sub
DIY 15" Tempest w/ partsexpress 350w amp

I really doubt mine is 50db from 3 ft like someone mentioned, but it is there, not really noticeable from 10 ft, but from 3 or 5 ft, YEP!

I finally got my stuff installed and totally love it! The clarity and depth is just SO much better than my dad's onkyo and my old 8000 series jvc amp!
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Aggie Engineers Rock