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QSC Audio Products, LLC
5.5 Low frequency transducer
The LF transducer can be removed and reinstalled without removing the baffle. 
Removal
1.  Follow the removal instructions in “5.2 Front grille” on page 
16.
2.  Place the speaker on it’s back (or in monitor wedge posi-
tion) so the LF transducer doesn’t fall out after the screws 
are removed.
3.  Remove 8 screws around the perimeter of the transducer’s 
frame. 
Note: Be very careful when removing the screws. The 
screwdriver can easily slip and pierce a hole in the surround 
or cone of the transducer.
4.  Partially lift the transducer out of the speaker assembly. 
5.  Disconnect the fastons from the transducer’s positive and 
negative terminals.
6.  Fully remove the transducer from the speaker assembly.
Installation
1.  Place the speaker on it’s back (or in monitor wedge posi-
tion).
2.  Connect the fastons to the transducer’s positive (green 
wire) and negative (green/black wire) terminals.
 Important note: This connection must have high retention force! Crimp new fastons (0.205” or 5.21 mm female, 
14–16 AWG, insulated straight ) to the wiring harness if the old ones are weak. 
3.  Gently lower the LF transducer into the speaker assembly.
4.  Fasten the 8 screws that secure the transducer to the baffle in a star pattern.
Note: Be very careful when installing the screws. The screwdriver can easily slip and pierce a hole in the surround or 
cone of the transducer.
5.6 Handles, feet, and pole mount
Handle removal and installation notes
• The handle is secured to the enclosure with machine screws (on the 
exterior of the enclosure) and mounting plates (on the interior of the 
enclosure).
• Access to the interior of the speaker assembly is required to remove 
and install the handles. 
• The easiest way to access the interior of the enclosure is to remove the 
BOP. See removal instructions in “5.1 Bucket of power” on page 15.
• Reapply a small amount of thread locking fluid to the mounting plate 
when replacing the handles. 
Figure 5.6 - LF transducer removal with baffle installed
Figure 5.7 - Handle removal