Thank you routercnc.

This is what makes this site so great for me.

You guys give excellent advice.
Backed with theory explained in a simple way.

So is the number 90db a real world guess? I have no clue on this...

It might be a deal breaker btw....


I guess high freuquent sounds s the ones that are most annoying.

Your example says 20cm concrete as the ideal solution.. i think i agree, but can't do that though...



so rockwool air gap sounds like the way to go... i will look in to this.






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