JL Audio Stealthbox SB-GM-C6CONV/8W3v3 Installation Manual

IN STALL ATIO N
DIFFICULTY:

INSTALLATION GUIDE

for the

SB-GM-C6CONV/8W3v3

SKU# 94330

2005 - 2013 Chevrolet C6 Corvette Convertible

Thank you for choosing a JL Audio Stealthbox® for your automotive sound system. With proper installation, your new vehicle-

specific enclosed subwoofer system will deliver years of listening pleasure.

We strongly recommend that you have your new Stealthbox® installed by your authorized JL Audio dealer. The installation

professionals employed by your dealer have the necessary tools and experience to disassemble and reassemble your vehicle

properly. Also, keep in mind that your warranty coverage extends to 1 year if your system is installed or approved by your

authorized JL Audio dealer. If you prefer to perform your own installation, please read this installation guide completely

before beginning the process.

If you choose to per form the installation yoursel f, it is absolutel y vital that
the Stealthbox® be properly mo unted to the vehicle according to these
instructions . Failure to mount the en closure properly presents two p roblems:

1) The sub-bass per formance will suffer due to the movem ent of the enclosure
caused by the force exe rted by the woofer(s).

2) A loose enclosure presents a serious s afety hazard in the event of a collision
or sudden deceleration.

STEP 1

Place the convertible top in the down p osition, keeping the
protective lid open.

Position the seats all the way for ward.

Remove the pair of rear speakers.

Continued on Next Page

STEP 2

Pull out the pair of plastic push -in retainers. These hold the
painted interior trim piece to the rear bulkhead.

STEP 3

Remove the pair of Allen head screws from the top side of
the painted interior trim piece.

Remove the painted interior trim pie ce out of the vehicle.

SB-GM -C6CONV/8W3v3 INSTR _SKU#011225

2

5

OUT
OF

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SB-GM -C6CONV/8W3v3 INSTR _SKU#011225

STEP 7

Position each Stealthbox® into their mounting location, with
the leg to the middle of the vehicle.

Firmly press each Stealthbox® into the rear bulkhead.

Remove each Stealthbox® carefully, leaving the wax squares
in place. The head of the bolt will leave an impression on
each wax square.

Remove the 3/8” hex bolt from each Stealthbox®.

STEP 6

Fully thread in each supplied 3/8” hex head bolt into each
Stealthbox®.

STEP 5

Place a supplied wax squares onto the driver’s side of the rear
bulkhead.

The middle of the wax square should measure 3-1/2 inches
from the top of the rear bulkhead and 3 inches from the right
of the stand out, as se en in the picture at left.

STEP 4

Place a supplied wax square onto the passenger’s side of the
rear bulkhead.

The middle of the wax square should measure 3-1/2 inches
from the top of the rear bulkhead and 3 inches from the lef t
of the stand out, as se en in the picture at left.

Page 2 • JL Audio, Inc 2016

STEP 9

With a drill and a 1/2-inch drill bit, drill through the
impression made in the wax square and into the vehicle’s
wheel well. Remove the wa x squares and cut the carpet
from the area around the drilled hole, as seen in the
picture at lef t.

STEP 11

Place a supplied 3/8” lock washer, supplied 3/8” f lat washer
and supplied 3/8” fender washer o nto each supplied 3/8” hex
head bolt.

Place each bolt assembly through th e drilled hole from
STEP 8 & 9. This is from the back side o f the rear bulkhead, into
the threaded insert o f each Stealthbox®, as seen in the picture
at left.

Using an 9/16-inch open end wrench or socket, se cure the
bolt assembly. Do not over thighten the bo lt assembly.

STEP 10

Cut enough speaker wire to allow the run from the each
Stealthbox® location to the amplifier location.

Attach the speaker wire to the wire terminal on each
Stealthbox®. Check the woofer for prop er operation.

Place each Stealthbox® into their mounting position. Bring
the speaker wire through the fac tory speaker mounting
holes.

STEP 8

Note: Before drilling, make sure that you are not going
to be drilling into any gas lines, brake lines, transmission
lines, electrical wiring, or anything else that might
cause a reduction in your weekly pay. Always wear eye
protection when drilling!

With a drill and a 1/2-inch drill bit, drill through the
impression made in the wax square and into the vehicle’s
rear bulkhead. Remove the wa x squares and cut the carpet
from the area around the drilled hole, as seen in the
picture at lef t.

3 inches

3 1/2 inches

3 inches

3 1/2 inches