Removing and installing/replacing central bass speaker - driver's side- (under front seat)

Necessary preliminary tasks: 

• Remove front seat. Refer to REMOVING AND INSTALLING FRONT SEAT, DRIVER'S SIDE or REMOVING AND INSTALLING FRONT SEAT, PASSENGER'S SIDE .
• Remove DOOR SILL COVER STRIP .

Release screws (1).

Remove cover of bass speaker (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Fold up the carpet (1) as shown.

Unfasten plug connection (3) and disconnect.

Unfasten screws (2).

Feed out central bass speaker support (4).

Courtesy of BMW OF NORTH AMERICA, INC.