Put these in a friends car and the first day they dont sound very good. No speaker does right out of the box. They take a little breaking in. The next day BOOM! The car is shaking! Especially paired with some sound dampening material these speakers along with the db651 coaxial is just amazing! Really rich highs and very surprising that with just a head unit giving out 52 wats per channel and with no amp the amount of bass is crazy! HIGHLY RECOMMENDED!