JL Audio SB-GM-C6CONV-8W3v3 User Manual

SB-GM-C6CONV/8W3v3

2005 - Up

Chevrolet C6 Corvette Convertible

SB-GM-C6CONV/8W3v3_INSTR_SKU#011225

SB-GM-C6CONV/8W3v3_INSTR_SKU#011225

2

INSTALLATION GUIDE

for the

SB-GM-C6CONV/8W3v3

2005 - Up

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.

Chevrolet C6 Corvette Convertible

If you choose to perform the installation yourself, it is absolutely vital that
the Stealthbox
instructions. Failure to mount the enclosure properly presents two problems:

1) The sub-bass performance will suffer due to the movement of the enclosure
caused by the force exerted by the woofer(s).

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

®

be properly mounted to the vehicle according to these

STEP 1

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

Position the seats all the way forward.

Remove the pair of rear speakers.

STEP 2

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

INSTALLATION
DIFFICULTY:

OUT
OF

5

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.

STEP 3

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

Remove the painted interior trim piece out of the vehicle.

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SB-GM-C6CONV/8W3v3_INSTR_SKU#011225

SB-GM-C6CONV/8W3v3_INSTR_SKU#011225

3 1/2-inches

3-inches

3-inches

3 1/2-inches

STEP 4

Place a supplied wax s quar e o nto the p assen g er’s si d e o f
the rear bulkhead.

The mi ddle of the wax s quar e s hould measu re, 3 1/ 2- inches
from the top of t he rea r b ulkh ead and 3-inc hes fro m the
lef t o f the stand out, as seen i n the picture at left.

STEP 5

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

The mi ddle of the wax s quar e s hould measu re, 3 1/ 2- inches
from the top of t he rea r b ulkh ead and 3-inc hes fro m the
right of the stan d out , as seen in the pi cture at left.

STEP 6

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

STEP 8

Note: Bef or e dr il li n g, m a ke su re t h at yo u ar e no t go in g
to be drilling into any gas lines, brake lines, transmission
lines, electrical wiring, transfer case (4x4 vehicles)
or anyt hi ng e l se t h at m ig h t c au se a re d uc t i on i n you r
weekly pay. Always wear eye protection when drilling!

Wit h a drill and a 1/2- i nch dr i l l bit, dril l throu gh the
impressi on made i n the wax squa re and i nto the vehicle ’s
rear bulk head. R emove th e wax sq uares and cut the carpet
from the ar e a around the drilled hole , as see n i n the
picture at left .

STEP 9

Note: Bef or e dr il li n g, m a ke su re t h at yo u ar e no t go in g
to be drilling into any gas lines, brake lines, transmission
lines, electrical wiring, transfer case (4x4 vehicles)
or anyt hi ng e l se t h at m ig h t c au se a re d uc t i on i n you r
weekly pay. Always wear eye protection when drilling!

Wit h a drill and a 1/2- i nch dr i l l bit, dril l throu gh the
impressi on made i n the wax squa re and i nto the vehicle ’s
whee l w ell. Re move the w ax squ ares a n d c ut the c arpet
from the ar e a around the drilled hole , as see n i n the
picture at left .

STEP 10

Cut enough s p eaker w ire to al low the run from the each
Stealthbox® loca t ion to th e amplifier loca tion.

Page 2 • JL Audio, Inc 2006

STEP 7

Position each Stealthbox® into their mounting location, with
the le g t o the mid d le of the vehicle.

Firmly press each Stealthbox® into the rear bulkhead.
Remove each Stealthbox® carefull y, lea ving th e wax sq uares

in place. The head of the bolt will leave an impression on
each wax square.

Remove the 3/8-inch hex bolt from each Stealthbox

®

.

STEALTHBOX WALL

THREADED INSERT

2-inch FENDER WASHER

3/8-inch LOCK WASHER

HEX BOLT

1-1/4-inch FLAT WASHER

BULK HEAD

Attach the speak er wir e t o the wire terminal on each
Stealthbox®. Check the woofe r f o r proper operati on.

Place each Stealthbox® into their mounting position.Br ing
the sp eaker w ire th rough t he factory speaker mountin g
holes.

STEP 11

Place a supplied 3/8-inch lock washer, supplied 3/ 8-inch
flat washer and supplied 3/8-inch fender washer onto each
supplied 3/8-inch hex head bolt.

Place each bolt assembly through the drilled hole from
STEP 8 & 9. This is fr om the back side of the rear bulkhea d,
into the threaded insert of each Stealthbox

®

, as seen in the

picture at left .
Using an 9/16-inch open end wrench or socket, secure the

bolt assembly. Do not over thighten the bolt assembly.

Continued on Next Page