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Stealthbox
®
INSTALLATION GUIDE
SB-T-SEQ/10W3v2-D2, JL AUDIO, Inc 2002
Sheet SKU#011111 Revision 10/30/02Page 1
for the
SB-T-SEQ/10W3
(Fits 2001 and Up Toyota Sequoia)
This Stealthbox is a product 
which requires professional 
installation skills and tools. 
Please read this installation guide 
thoroughly before beginning the 
project. It will guide you step by 
step through the installation. Several 
of the steps in this process may 
require two people to accomplish.
It is absolutely vital that the 
enclosure be properly mounted to 
the vehicle according to these 
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) and 2) A loose enclosure 
presents a serious safety hazard in 
the event of a collision or sudden 
deceleration.
Please enjoy your JL Audio 
Stealthbox responsibly.
STEP 1:
Remove the driver’s side rear
storage area cover.
STEP 2:
Remove the driver’s side rear panel.
STEP 3:
Grind off the plastic tabs which hold
the pocket to the panel.
STEP 4:
Remove the pocket from the panel.
STEP 5:
Create a notch in the side panel as
shown in the picture.
STEP 6:
Create a second notch in the side
panel as shown in the picture.
START 
HERE
Continued on Page 2 ➔
www.jlaudio.com
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STEP 7:
Insert supplied Socket Set Cup 
Screw into the enclosure so the rod extends 
approximately 1/4” out of the enclosure.
STEP 11:
Adjust the Socket Cup Set Screw,
so that is extends 1 1/2” out of the enclosure.
Cont. 
From
Page 1
Continued on Page 3 ➔
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STEP 8:
Roll the floor carpet back to expose 
the metal floor in the location shown above. 
Place the supplied wax square on the metal 
floor as shown above.
STEP 12:
Insert the supplied U-bolt in
factory hole.
(located at the top of the enclosure location 
as shown above)
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STEP 13:
Run speaker wires to the location 
of the Stealthbox. Check the Stealthbox for 
proper operation.
STEP14:
Using the supplied 1/4”washer, 1/4” 
lock washer and 1/4”x1”bolt. Mount the Lbracker to top of the enclosure.The bottom 
of the L-brackt needs to point towards the 
driver’s side fender.
STEP 15:
Place the Stealthbox in its proper 
location, making sure to place the threaded 
rod into the previously drilled hole in the 
floor.
STEP16:
Place the supplied 1/4’lock washer, 
1/4” flat washer in that order onto the 
1/4”x1” bolt. Pass the bolt through the 
mounted L-bracker and thread into the Ubolt installed in 
STEP 12
. Do not fully tighten.
STEP 9:
Place the Stealthbox into place so as 
to allow the Socket Set Cup Screw to make 
an impression in the wax square.
STEP 10:
Using a 1/2” drill bit, drill a hole 
through the metal floor in the location of the 
impression in the wax square.
SB-T-SEQ/10W3v2-D2, JL AUDIO, Inc 2002
Sheet SKU#011111 Revision 10/30/02Page 2
www.jlaudio.com
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Specifications:
Enclosure Type: Acoustic Suspension (Sealed) 
Driver Type: One JL AUDIO 10W3v2-D2 Subwoofer 
Nominal Impedance: 4Ω 
Cont. Power Handling: 300 Watts
JL Audio recommends using a high quality amplifier such as the JL Audio 250/1. The diagram below shows the recommended 
crossover, infrasonic filter and equalizer settings for the 250/1 when being used to power the the Audio Stealthbox®.
Included Hardware:
(2) 1/4" Flat Washer 
(2) 1/4" Lock Washer 
(1) 1/4” U-Nut 
(2) 1/4” x 1” Bolt 
(1) L-Bracket
10369 N. Commerce Pkwy, Miramar, Florida 33025-392   Phone: 954.443.1100   Fax: 954.443.1111
The JL Audio 250/1 is a very versatile audio component. Please consult the owner’s manual for detailed information 
about installing and tuning this amplifier.
SB-T-SEQ/10W3v2-D2, JL AUDIO, Inc 2002
Sheet SKU#011111 Revision 10/30/02Page 3
www.jlaudio.com
Mid/High Frequency Driver Information:
CONGRATULATIONS! 
INSTALL COMPLETE.
VR650-CSi
(1) 3/8” Split Lock Washer 
(1) 3/8” x 1-1/4” Fender Washer 
(1) 3/8” x 2 1/4” Socket Cup Set Screw 
(1) 3/8” Hex Nut 
(1) Grille 
(1) 3” x 3” Wax Square
TR650-CXi
Front Applicable JL Audio Products:
TR650-CSi & CXi 
VR650-CSi & CXi
Rear Applicable JL Audio Products:
TR650-CXi,VR650-CXi
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STEP 15:
Adjusting the Socket Set Cup 
Screw so that the proper length is exposed 
(the exposed end of the rod is slotted to 
accept a flat-blade screw driver to be used 
when adjusting the rod’s position). Place the 
3/8” flat washer, 3/8” lock washer and 
3/8”bolt, in that order, on the threaded rod. 
Do not fully tighten.
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STEP 17:
Fully tighten the bolt on the top of 
the enclosure and the nut on the threaded 
rod on the bottom of the enclosure to secure 
the enclosure.
STEP 18:
Reinstall the factory side panel.
STEP 19:
Attach the supplied grill to the
factory side panel.
Cont. 
From
Page 2
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Bass Control
Infrasonic Filter
Off/30Hz
+7
+3
+1
LF Boost (dB)
+10
+13
Amp LP Filter
Mode/Slope
Off/12dB/24dB
Filter Freq. (Hz)
Amplifier Input Section
Input Voltage
Low/High
Left Ch.
Input Sens.
Right Ch.
Signal Sensing
Off/On
JL AUDIO 250/1
monoblock subwoofer amplifier
Preamp Output Section
Output Mode
Full-Range/Low-Pass/High-Pass
Left Ch.
Right Ch.