i am talking about a 6 speaker set up. and then u have an amp to the 6x9 with gain controls...u just adjust them based on your needs right. In my case i have my front speakers powered with the kenwood..rear from the HU...then i would either get a 2 channel or 4 channel amp maybe 40x2 40x4rms. and either power just the 6x9 in boxes or both rear door and 6x9. Also on the 6x9 amp u would adjust the cutoff so that u just get mids and highs. i would say a pioneer 3way 6x9 that isnt bass heavy and has really crisp range.