A sealed speaker enclosure for a bass speaker that is hand-insertable and removable from a hard-side motorcycle saddlebag. The body of the enclosure complements the interior space of the saddlebag making sealing contact with the interior walls of the saddlebag. The bass speaker faces the motorcycle side of the saddlebag within the shock absorber tower indentation overlapping and opening. A speaker grill overlays the opening in the shock absorber tower indentation of the saddlebag.