Been in car audio for several years,and for the price,and performance,it really cant be beat.Put 2 in seperate 1.8cuft 3/4mdf enclosures with a 2"x10 1/4" port on an Autotek Mean Machine 66,oldschool amplifier in a 92 Acura Integra 2dr hatchback,and 3/4 way up,and you cant even imagine the SPL I got out of these speakers!!Without question,sounded like a pair of Heavy Hitting 15s!!Couldnt hardly sit in the car from the pressure level performance!!Sounded just as good as my Audiobaun AW1006t 1000 rms 10s.Worth every penny guys!Dont exceed 2ohms,and you can Slam All Day Long!!!