The owner of this Cadillac wanted to upgrade his sound system by adding a monster subwoofer. We set him with a top of the line DDX771, along with a 12CX1200.1 Mono Amplifier for his CWR sub-woofers. This upgraded subwoofer adds so much intensity to this car, it’s unbelievable. The owner of this Cadillac was amazed by the upgrade to his sound system. Professional installation of this Cadillac subwoofer was done by the tech crew at Audio Express 5004 N. Oracle Road, Tucson, AZ 85704 (520) 888-7066 your car audio custom installation experts. We can recommend and install a subwoofer to fit your car and budget.