bjfunbear Posted October 20, 2012 Share #1 Posted October 20, 2012 I installed a set of polk 401s and Alpine ktp-445u amp and it sounds alot better. I know some people installed these components and didn't have very good results.I noticed if you follow the shop manuals wiring diagram its wrong . It has the left front speaker polarities reversed which of course would cause poor sound. Just thought some people would be interested . Link to comment Share on other sites More sharing options...
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