The most dramatic improvement you will ever make to any audio system us by adding a subwoofer. D1 series 2 subwoofers make it easy. These subwoofers have large rolled rubber surrounds and larger 2" voice coils for better power handling than competing models. They are available in either dual 2 ohm or 4 ohm versions. They work equally well in small sealed or medium vented enclosures. They sound great. Best of all they are affordable.
