The G1 car audio subwoofer incorporates features found on G3 and G2 subwoofers such as SureSet™ impedance selection & protection and RadialVent® cooling. G1 also has a shallow rear draft allowing it to fit into virtually any pre-made truck enclosure. With stunning design, high-end features, and the flexibility to work into multiple enclosure types, you have a subwoofer that redefines the entry-level.