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here is something I found that explains STC ratings:
http://www.cmhc-schl.gc.ca/en/co/reho/reho_003.cfm

It seems to suggest that anything in the mid 60's or higher is quite good, however, I just wanted people's feedback with these ratings and if they feel that they are adequate.




Just to give you an idea of how good 69 STC is, THX certified commercial theatres have an STC of 80+. So with 69 you are only 11 db's away from 80, I'd say thats pretty good. And commercial theatres sometimes play ear bleeding levels and you can't hear them in the next theatre at all.


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