If you are a rock music lover and you want to have a subwoofer in your car then pioneer shallow mount 12 could be best for you. These subs are known as bass booster Visit us: http://www.outdoorsumo.com/best-shallow-mount-12-subwoofer/ system because these subs has a very punchy and tight bass. You will be able to hear its every bass notes clearly. The bass coming from the subwoofer is not harmful for your ears.