Exactly I run a JL 10" (traded my JL 12" to some punk) and a set of MB quarts components up front. The key is have different speakers for different frequencies. When you try to push all the frequencies through even a 6x9 3-way every in the midrange and below gets horribly distorted with any amount of bass. Numerous times have I checked to see how loud my system is outside my car and the bass isnt overwhelming.