Integral Audio IASS-4, Installation Manual

E. 

SUBWOOFER

20

69. REMOVE ASPHALT PATCH

On the driver’s side of the boot floor you will see an approximate-
ly 2” x 2” asphalt patch.  Use the stiff putty knife to remove it.  It 
should remove easily, if not heating it with a heat gun (or hair 
dryer) will soften it.  Cut a short strip of electrical tape and cover 
the hole - the enclosure side leg will sit over the hole.

70. MARK FOR BRACKET AND THREADED INSERT

Temporarily replace the Wheel Arch Trim Panels, if previously 
removed.  Place the enclosure in the boot, all the way forward and 
centered side-to-side in the carpet opening.  Using a center punch 
(or marker), mark the center of the mounting bracket hole in the 
sheet metal below.  Keep the hole at least 3/8” away from the 
edges of the raised/lowered area of the sheet metal.  Cut a notch 
in the carpet by cutting two slits and folding the carpet back and 
under.  Mark the center with a marker or center punch. 

71. INSTALL THREADED INSERTS (PART 1)

Using a 7/16” bit (NOT a ½” bit!), drill holes in the 2 positions 
marked on the boot floor.  Do not let the drill bit penetrate more 
than ¼” through the sheet metal.  You may find it helpful to use a 
cut-to-length wood block as a stop for the drill.  It is important to 
drill the holes EXACTLY where they were marked.
Remove any metal burrs - the hole must have clean edges.

72. INSTALL THREADED INSERTS (PART 2)

Using a utility knife, carefully trim the PVC jacket out of the 
center of the Self-Sealing Threaded Inserts as shown.  Insert the 
1” Hex Bolt through the Installation Tool.  Then thread the 1” Hex 
Bolt into the Threaded Insert.  Be sure the “nubs” on the Instal-
lation Tool face the top of the Threaded Insert.  These “nubs” are 
what grip the Insert and prevent it from turning during installa-
tion. 

73. INSTALL THREADED INSERTS (PART 3) 

Insert the Threaded Inserts into the holes drilled in the previ-
ous step.  Keep the Insert vertical and keep the head of the Insert 
flush against the sheet metal and carefully tighten the bolt by 
hand with a wrench (do not use a powered tool of any kind) until 
you begin to feel resistance and the insert is secure.  Take your 
time - do not over-tighten.  Remove the 1” Hex bolt.  If you have 
trouble with an Insert, you can remove it by partially unthreading 
the 1” Hex bolt and tapping it with a hammer.