JL AUDIO SB-D-MGACABG4-10TW1 2006 and Up Ram Mega Cab Installation Guide

: June 10, 2024
: JL AUDIO

JL AUDIO SB-D-MGACABG4-10TW1 2006 and Up Ram Mega Cab Installation Guide

IMPORTANT

Installation requires appropriate tools and safety equipment. Professional installation is recommended.
If you prefer to perform your own installation, please read this installation guide completely before beginning.
Before cutting or drilling, check for potential obstacles behind mounting surfaces.
Mount this product securely to prevent damage or injury in severe conditions.

INCLUDED HARDWARE

POWER RECOMMENDATION

JL Audio recommends high quality amplifiers such as the JL Audio XD600/1v2. The diagram below shows the recommended crossover settings for the XD600/1v2. For a detailed description of the
amplifier, consult the owner’s manual for the amplifier. If another amplifier is being used, please reference this illustration and use similar settings on that amplifier

CONNECTIONS

Using quality power, signal, and speaker wire is essential in ensuring the performance of your Stealthbox®. JL Audio recommends using a 4 AWG power kit such as the XD-PCS4-1B for your
Stealthbox® amplifier. Other kits are available should you be using more than one amplifier. Signal wire such as the JL Audio Premium Audio Interconnect Cables should be used to provide signal for
both channels of the amplifier. JL Audio recommends using 12 AWG speaker wire for subwoofers, such as our XC-BCS12-25.

STEP 1

Note: This Stealthbox® can be installed behind the rear seat on the passenger side, driver side, or both. For single enclosure installations, we recommend positioning the enclosure on the passenger side of the cab. Clear the rear seat area and fold the rear seats forward.

STEP 3

Flip the passenger side seat gap cover panel up. Remove the two indicated factory nuts and the panel from the vehicle.

STEP 4

Flip the driver side seat gap cover panel up. Remove the two indicated factory nuts and the panel from the vehicle.

STEP 5

Open the rear seat storage compartment lids and remove the factory bolts from the ndicated positions within the bottom interior.
Remove the rear seat storage compartment from the vehicle.
Note: If equipped, the factory subwoofer harness will need to be unclipped during the rear seat storage compartment removal.

STEP 6 (PASSENGER)

With the rear seat storage compartment removed from the vehicle, place the two supplied Wax Squares as shown.
Note: The passenger side is shown in the image. Driver side installation requires
Wax Square placement shown in STEP 6 (DRIVER)

STEP 6 (DRIVER)

With the rear seat storage compartment removed from the vehicle, place the two supplied Wax Squares as shown.
Note: The driver side is shown in the image. Passenger side installation requires Wax Square placement shown in STEP 6 (PASSENGER).

STEP 4

Flip the driver side seat gap cover panel up. Remove the two indicated factory nuts and the panel from the vehicle.

STEP 7 (PASSENGER SIDE)

Thread one supplied 3/8 – 16 x 2-1/4” Set Screw into each of the two Passenger (indicated) threaded inserts, leaving 1/2” of the Set Screw protruding.
Thread one supplied 3/8 – 16 x 3/4” Set Screw into each of the two Driver (indicated) threaded inserts, until flush with the surface of the enclosure.
Note: To prevent air leaks, we recommend applying teflon tape or thread sealant to all set screws.)

STEP 5

Open the rear seat storage compartment lids and remove the factory bolts from the indicated positions within the bottom interior. Remove the rear seat storage compartment from the vehicle.
Note: If equipped, the factory subwoofer harness will need to be unclipped during the rear seat storage compartment removal.

STEP 7 (DRIVER SIDE)

Thread one supplied 3/8 – 16 x 2-1/4” Set
Screw into each of the two Driver (indicated) threaded inserts, leaving 1/2” of the Set Screw protruding.
Thread one supplied 3/8 – 16 x 3/4” Set Screw into each of the two Passenger (indicated) threaded inserts, until flush with the surface of the enclosure.
(Note: To prevent air leaks, we recommend applying teflon tape or thread sealant to all set screws.)

STEP 8

Place the enclosure into the vehicle, aligning it with the rear corner of the cab with the terminal cup facing the rear wall. (Passenger side shown). Firmly press down on the enclosure to allow
the two 3/8 – 16 x 2-1/4” Set Screws installed and left protruding in STEP 7 to leave an impression on the two Wax Squares placed in STEP 6.

STEP 12

Route speaker cable from the amplifier to the Stealthbox® and connect to the enclosure’s terminal cup.
Carefully place the Stealthbox® into the mounting location, allowing the two protruding 3/8 – 16 x 2-1/4” Set Screws to pass through the holes drilled in the floor in STEP 10.

STEP 9

Remove the enclosure and use a 1/8” drill bit to drill a pilot hole through the center of the impression on each Wax Square installed in STEP 6.

STEP 13

From underneath the vehicle, locate one of the two 3/8 – 16 x 2-1/4” Set Screws passed through the floor of the vehicle in STEP 12.
Referring to Page 2 as a guide, use one supplied 3/8” Flat Washer, one 3/8” Split Lock Washer, and one 3/8 – 16 Hex Nut to attach the Stealthbox® to the vehicle. Fully tighten the 3/8 – 16 Hex Nut.

STEP 10

Remove the two Wax Squares from the vehicle. Use a 7/16” drill bit to enlarge the two pilot holes drilled in STEP 9.

STEP 14

From underneath the vehicle, locate the second of the two 3/8 – 16 x 2-1/4” Set Screws passed through the floor of the vehicle in STEP 12.
Referring to Page 2 as a guide, use one supplied 3/8” Flat Washer, one 3/8” Split Lock Washer, and one 3/8 – 16 Hex Nut to attach the Stealthbox® to the vehicle. Fully tighten the 3/8 – 16 Hex Nut.

S T E P 11

Back the two 3/8 – 16 x 2-1/4” Set Screws installed in STEP 7 out, leaving 1-1/4” length protruding from the enclosure. (Passenger side indicated).

STEP 15

Reinstall the factory driver and passenger rear seat gap cover panels.

STEP 16

Fold the rear seats up.

CONGRATULATIONS!

You have completed the installation for this model! Enjoy your new Stealthbox®!

MID/HIGH FREQUENCY DRIVER FITMENT

A variety of JL Audio coaxial and component systems will fit in the factory speaker locations of your vehicle

Location / OEM Speaker Size	Suggested JL Audio Speaker Models
Coaxial Models	Component Models
Front Doors / 6 x 9-inch	C1-690x(1), C1-690tx(1), C2-690tx(1) C2-650x(1),
C5-650x(1)	C1-690(1), C1-650(1), C2-650(1),