Saw this at the dealmac Forum.
A before and after.
http://homepage.mac.com/bsharp1/iMovieTheater14.htmlAlso. An interesting Super Quiet PC project.
http://www.techtv.com/screensavers/howto/s...3422228,00.htmlHe got it down to 14 db.
"For reference, here are a few readings for some everyday events.
* Rocket launching: 180 dB
* Jet taking off: 140 dB
* Air raid siren: 125 dB
* Threshold of pain for human ear: 120 dB
* Loud rock music at a concert: 115 dB
* Level where ear damage starts: 85 dB
* Busy street: 70 dB
* Normal conversation: 60 dB
* Yoshi's cubicle: 46 dB
* Library: 40 dB
* Rustling leaves: 30 dB
* Yoshi's movie room (no movie showing): 24 dB
* Soft whisper: 20 dB
* Threshold of sound perception: 10 dB
* Threshold of human hearing: 0 dB
Test results
I used a Larson Davis 824 sound-level meter. It's very easy to use.
* Stock OEM PC: 38 dB
* Laptop (with fan on): 42 dB
* Yoshi's Project YS-2: 8 dB (120 Hz and above), 14 dB (100 Hz and below)"
http://www.techtv.com/screensavers/howto/j...3422244,00.html