Installing the central bass

• Insert the central bass (4) 
• Tighten down screws (2) 
  TIGHTENING TORQUE SPECIFICATION
  
  

  Central bass loudspeaker to floor assembly group
  Nut	tightening torque	5 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

• Connect connectors (3)  and lock
• Fold the carpet (1)  down
• Correctly lay the carpet (4) 
• Correctly position the air duct (3)  and engage upward
• Insert and install the speaker trim (2) 
• Tighten down screws (1) 

Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING FRONT SEAT .