when i was on full power,the first night we got it done, 20,000+watts on 4 18s me and david mrclark went to a carwash a good 1/2 mile away from my house/neighborhood and my mom called me within a minute (she didnt even know i was there,or that i even had my system finished) (again david and mrclark as my witnesses) saying johnathan you need to turn that shit down,your shaking the widows and floor in the house...,then i had people from surrounding neighborhoods calling from up to a mile away asking me if i was sitting outside of there house,or did i just ride down there street..when that shit is full tilting it is nnnoooo fucking joke PERIOD..straight up destroying airways.im sure meades is very similiar...thats just for sho nuff groundpounding/shaking...as far as being heard...a good 4 miles by what me and david tested