Dodge 2009 Caliber SRT4 - Manual (Page 236)

Installing Subwoofer
1. Align the right outside edge of the subwoofer with the
outside edge of the rib located on the load floor.
2. Slide the subwoofer toward the front of the vehicle so
that the rear edge lines up with the end of the load floor.
NOTE: The left outside edge of the subwoofer will not
line up with a rib on the load floor.
3. Connect the electrical connector.
234 UNDERSTANDING YOUR INSTRUMENT PANEL