I am really confused here. I have a Pioneer VSX-9300TX that I just took out of the box and I am driving Atlantic Technology System 20 THX Ultra speakers with a Jamo D8 Sub. When I run a DVD at a volume of -20dB (not that loud) the A/V unit shuts down during any hint of real action in the movie. I know it is not the unit because I just returned a JVC 20VBK that was doing the same thing. I have verified that it is not the DVD player as I used two different players with the same result. While I wouldn't classify the system as "quiet" at that volume, but for the amount of money I spent on this theater I am definitely not getting a "theater experience" as I am only able to watch movies at an average volume level. I have set all of my speaker tones to the recommended 75dB (C weighting) with my SPL meter and I am still only getting marginal volume. My speaker wires are not touching each other and I have my speaker levels at reasonable levels (+5.0dB). This is killing me! Any ideas?