What is the sound level of Your Listening Room?

7dB is totally obtainable. I was able to go much lower than that even. Remember, dB is a log scale of pressure differentials. We like to think of it as measuring sound pressure level when really it is measuring pressure wave differentials. Sound is a wave of compression followed by rarefaction. High pressure followed by low pressure. This is the key concept to keep in mind when trying to lower your dB.  

Since what dB really is measuring is the difference between the two then the way to get it lower is to eliminate this difference. This is done most cost-effectively by filling your underground concrete bunker with liquid nitrogen. Within a few hours, a day or two at most, all motion ceases and you have virtually 0 dB. At least I am pretty sure. Every time I try and check my meter freezes over. 

mahgister,
I read your posts and think that you make many good points.  Your decibel scale is way off!  First off there is no such thing as zero decibel and obviously no one has "heard" zero decibels. Even the quietest room in the world is not "zero".  Secondly and finally...if you think that screaming in someone's ear is only 110 dB take a flight to NJ and I'll ring your ears for days with a few seconds of full blast vocal chords.  Not sure where you got that info, but you are being misguided by it. All the best.
Warm Regards,
barts  

31 db pretty consistently as I just tested - 5:14P and mostly quiet. Interesting thread.

douglas_schroeder

Thanks. we are on the same page.  I absolutely loathe intrusive noise of any kind.
Particularly phones which are banned from new and former listening rooms. 
Secret Intel: I unplug the main connections to the house land line when I'm seriously listening.  Now, only you and several A'goners know. All the best
Regards,
barts 

iF you have two phones, wire Siri out of phase on one…..