Installing the central bass

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

  Central bass speaker trim
  screw	Tightening torque	2 Nm

  Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

• Refer to INSTALLING FRONT SEAT .
• Refer to ACTIVATING THE 48 V ELECTRICAL SYSTEM .