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Stealthbox
®
INSTALLATION GUIDE
SB-F-ZX3/10W3, JL AUDIO, Inc 2002
Sheet SKU#011157 Revision 06/18/02Page 1
(2000-Up ZX3 2-door & 2001-Up ZX5
4-door hatchback)
SB-F-ZX3/10W3
for the
This Stealthbox is a product that 
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 four Phillips head 
screws, panel button and cargo light from 
driver’s side rear cargo area.
STEP 2:
Remove the plastic safety belt 
retractor cover. Look up under the plastic 
cover for a Phillips head screw. Remove this 
screw. (The location of this screw is shown in 
the picture by the upward arrow).
STEP 3:
Remove the two plastic Phillips head 
screws indicated by the arrows.These are 
located in the driver’s rear hatch plastic trim 
panel. Remove the carpeted side panel.This 
panel will be cut in Step 9 so as to form a 
trim for the Stealthbox.The view shown 
above is from the back seat looking toward 
the hatch. Also remove the hatch flooring (this 
flooring will be re-installed later).
STEP 4:
Locate the MOLEX®plug and pull it
loose from the side panel.
STEP 5:
Remove the T-27 TORX head bolt 
from the back side of the driver’s side rear 
wheel well. Remove the Phillips screw from 
directly below the TORX head bolt.
STEP 6:
Loosen the driver’s side rear fabric 
wheel well by pulling it toward the front of 
the car.
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STEP 7:
Pull plastic mounting stud out from
the rear side metal panel were the MOLEX
®
wiring plug was removed in Step 4.
Cont. 
From
Page 1
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STEP 8:
Enlarge this hole to 1/2 in. (12.7 mm).
CAUTION: Always check for obstructions 
before drilling.
ALWAYS WEAR EYE PROTECTION 
WHEN DRILLING.
STEP 9:
Using a measuring tape and masking 
tape, define the area to be cut as shown by 
the picture (above) and dimensions (to the 
right). All dimensions follow the contour of 
the panel.
STEP 10:
After panel has been cut, it should
resemble this.
SB-F-ZX3/10W3, JL AUDIO, Inc 2002
Sheet SKU#011157 Revision 06/18/02Page 2
www.jlaudio.com
A
B
C
D
E
F
G
H
A) 2.5 in. (63.5mm) E) 1.25 in. (31.75mm) 
B) 1.0 in. (25.4mm) F) 13.5 in. (342.9mm) 
C) 11.0 in. (279.4mm) G) 9.375 in. (238.125mm) 
D) 7.75 in. (196.85mm) H) 17.5 in. (444.5mm) 
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Specifications:
Enclosure Type: Acoustic Suspension (Sealed) 
Driver Type: One JL AUDIO 10W3-D2 Subwoofer 
Nominal Impedance: 4Ω 
Cont. Power Handling: 250 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 your Stealthbox
®
.
Included Hardware:
(1) 3/8” Washer 
(1) 3/8” Lock Washer 
(1) 3/8” Hex nut 
(1) 3/8” x 2 1/4” Socket Cup Set Screw
10369 N. Commerce Pkwy, Miramar, Florida 33025   Phone: 954.443.1100   Fax: 954.443.1111
JL AUDIO 250/1
monoblock subwoofer amplifier
Amplifier Input Section
Input Sens.
Input Voltage
Low/High
Left Ch.
Right Ch.
Signal Sensing
Off/On
Output Mode
Full-Range/Low-Pass/High-Pass
Left Ch.
Right Ch.
Amp LP Filter
Mode/Slope
Off/12dB/24dB
Filter Freq. (Hz)
Bass Control
LF Boost (dB)
Off/30Hz
Infrasonic Filter
+1
+13
+3
+7
+10
Preamp Output Section
The JL Audio 250/1 is a ver y versatile audio component. Please consult the owner’s manual for detailed information 
about installing and tuning this amplifier.
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Cont. 
From
Page 3
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SB-F-ZX3/10W3, JL AUDIO, Inc 2002
Sheet SKU#011157 Revision 06/18/02Page 3
www.jlaudio.com
Mid/High Frequency Driver Information:
CONGRATULATIONS!
INSTALL COMPLETE.
TR570-CXi
Front Location Driver Size:
5"x7”
Applicable JL Audio Products:
TR570-CXi, 
XR570-CXi or CSi
Rear Location Driver Size:
5"x7”
Applicable JL Audio Products:
TR570-CXi, 
XR570-CXi or CSi
STEP 11: Reinstall the plastic side panel and 
the 4 Phillips head screws, the safety belt 
retractor cover and cargo light removed in 
Steps 1 & 2. Place cut carpet side panel back 
into car.
STEP 12:
Run speaker wire to the location of 
the Stealthbox enclosure. At this time please 
check for proper operation of woofer.
STEP 13: Slide Stealthbox enclosure into the 
corner of cargo area. Insert the 3/8 in. 
threaded mounting stud into the enclosure 
and line it up with the 1/2 in. (12.7 mm) hole. 
Slide through to outside of car. Make sure 
relocated MOLEX
®
plug and wiring is not 
going to be pinched by enclosure or side 
panels.
STEP 14:
From outside of the car, slide hand
between the pulled fabric wheel well (Step
6) and the car’s body. Feel for the threaded 
mounting stud.
STEP 15: Place fender washer, lock washer 
and 3/8 in. nut onto threaded mounting stud. 
Tighten firmly using a 9/16 in. deep socket.
STEP 16: After securely mounting the 
Stealthbox, push fabric wheel well back into 
place. Reinstall TORX head bolt and Phillips 
head screw that was removed in Step 5.
STEP 17: Replace hatch carpet back into car.You 
will need to tuck the carpet under the Stealthbox.
XR570-CXi