Page 1
FORD RANGER
And Mazda B Series
Warranty Statement
ThunderForm Loaded Enclosures purchased in the United States from an authorized MTX dealer
are guaranteed against defects in material and workmanship for a period of two years from the date
purchased by the end user, and limited to the original retail purchaser of the product.
Amplified ThunderForm Enclosures purchased in the United States from an authorized MTX dealer
are guaranteed against defects in material and workmanship for a period of one year from the date
purchased by the end user, and limited to the original retail purchaser of the product.
Product found to be defective during that period will be repaired or replaced by MTX at no
charge. This warranty is void if it is determined that unauthorized parties have attempted repairs
or alterations of any nature. Warranty does not extend to cosmetics or finish. Before presuming
a defect is present in the product, be certain that all related equipment and wiring is functioning
properly. MTX disclaims any liability for other incurred damages resulting from product defects. Any
expenses incurred in the removal and reinstallation of products are not covered by this warranty.
MTX's total liability will not exceed the purchase price of the product. If a defect is present, your
authorized MTX dealer may be able to effect repairs.
Proof of purchase is required when requesting service, so please retain your sales receipt and take
a moment to register your warranty online at www.mtx.com.
21A7033
Vehicle Specific Subwoofer Enclosure
Made in the USA
One Mitek Plaza, Winslow, IL. 61089
1-800-225-5689 www.mtx.com
Page 2
READ ALL DIRECTIONS CAREFULLY BEFORE BEGINNING
MOUNTING LOCATION: The enclosure mounts behind the seat directly
behind driver in the Ranger or a Mazda B-Series regular cab trucks.
TOOLS REQUIRED FOR INSTALLATION:
Phillips Head Screwdriver Ratchet
5/16” Socket Wire Crimper
Wire Cutters 3/8” Drill Bit
Power Drill 7/32” Socket
INSTALLATION: Follow the steps below
1. Remove rubber mat from bottom of tray behind driver seat by pulling
up on tab. All models do not have this mat.
2. Remove tray by removing four 7/32 bolts from tray. Retain these items
to replace if you sell the vehicle.
7/32" Bolts to be Removed
3. Attach one bracket provided to bottom of enclosure front beneath
woofer. The other bracket provided attaches to the left side of the enclosure at the top towards the rear of the enclosure as shown below.
21. Screw enclosure into place as shown below.
Mounting Brackets
Factory Speaker Grill
For technical assistance call 1-800-CALL MTX.
These instructions are guidelines only and in no way are intended to
replace a professional installation. As always before screwing or drilling
check to make sure you will not damage any wires or hoses or cause
damage to the vehicle.
Warning: Batteries normally produce explosive gases which can cause
personal injury. Therefore, do not allow flames, sparks or lighted substances to come near the battery. When charging or working near a
battery, always shield your face and protect your eyes. Always provide
ventilation.
Conventional Wiring of Aftermarket Radio
HIGH LEVEL
INPUTS
GAIN
CROSSOVE
R
+
-
LINE LEVEL
INPUTS
+
-
POWER
GN
D
REMO
TE
STATUS
15 Amp Fuse
Low Level Signal
Turn On Lead
1 6
Page 3
Mounting Brackets
4. In front of the terminal cup there is a hole left where the factory tray
was removed this is unseen with the seat in the normal driving position.
You can repair this spot by cutting a small piece of carpet from beneath
the tray location and gluing it into this hole or under the carpet in this
spot.
5. If externally amplified make speaker connections to the enclosure
from your amplifier; loosen terminal knobs (a 13mm nut driver can be
used). Connect wires from amplifier to enclosure, positive to red terminal
knob and negative to black terminal knob. Refer to step 21 for mounting
directions.
Suggestion: For a custom install, remove driver if loaded version or
before woofer is installed in unloaded versions, screw into back of enclosure into rear of truck. Install driver.
AMPLIFIED THUNDERFORM
Routing Power Wire; we recommend a connection directly to the
battery.
6. Remove drivers' side threshold trim: remove four phillips head
screws and pull up on trim it will release easily.
Phillips Head Screws
7. Remove drivers side kick panel, pull from bottom it will unsnap easily.
8. Route 10ga red power wire from furnished wiring harness starting at
16. Plug power wire harness into amplifier pre-amp.
HIGH LEVEL
INPUTS
GAIN
CROSSOVER
+
-
LINE LEVEL
INPUTS
+
-
POWER
GND
REMO
TE
STATUS
17. Replace 15amp fuse under hood.
18. When amp turns on, LED will display red during diagnostic mode and
then to green, signaling amp is on and functioning (amp will only turn on
when radio is on).
19. Adjust gain and crossover.
Setting Gain
Turn gain knob on Thunderform pre-amp to minimum, counter clockwise. Play a favorite tape or compact disc that contains consistent music
and bass. Turn the source unit to maximum listening level. You should
know that some source units will produce distortion or “clip” before the
unit reaches maximum volume. Reduce volume to the loudest listening
level before distortion. Turn the gain knob on the Thunderform pre-amp
clockwise until the speaker starts to distort and reduce gain to loudest
listening level before distortion.
Setting Crossover
You should set the crossover to your own personal listening taste. The
crossover is adjustable to any frequency between 50Hz (counterclockwise) to 150Hz (clockwise). As a guideline, the goal is to create the illusion of bass up front. The higher the crossover point the more “audibly
visible” your sub is going to be. Take your time and really listen to your
system, grab a soda and a few of your favorite tunes and have fun.
TROUBLESHOOTING TIPS IF AMP DOES NOT TURN ON
Check all connections at battery and that fuse is installed
Check speaker wire connections
Check ground
Check fuse on pre-amp
20. Reinstall kick panel on driver side. Replace threshold trim panel.
25
Page 4
pre-amp location. Route wire on driver’s side, over to threshold and under
carpet and kick panel to the front of the vehicle.
9. Drill a hole through the firewall. Locate a spot low on the firewall. You
should always look to find a clear path. Drill a hole from inside of vehicle
into engine compartment and insert grommet.
Grommet
Firewall
Battery
Note: To avoid any damage to parts inside engine compartment,
drill from inside of vehicle using a short bit.
10. Route wire safely through engine compartment, avoiding any moving
or extremely hot parts that would damage wire.
11. Cut 10ga red wire to length at battery and connect fuse holder to
end of wire.
12. Remove 15amp fuse from MTX fuse holder and connect ring terminal to positive side of battery. By removing 5/16 bolt from factory battery
terminal (lift the small tab on the factory battery terminal to allow rotation
and removal of 5/16 bolt). Pass 5/16 bolt through factory battery terminal then ring terminal and into other side of factory battery terminal and
retighten.
Note: When the battery is disconnected and reconnected, some abnormal drive
symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle
may need to be driven 10 miles or more to relearn the strategy.
13. Ground amplifier to chassis of vehicle; connect the terminal provided
to the 10ga black wire from furnished wiring harness. A good ground is
as important as the power connection. The ground should be as short as
possible and the contact point should be free of paint and debris.
SPEAKER WIRES
14. Under carpet on drivers' side threshold locate the rear speaker wires.
Colors are left side, tan/yellow (positive), gray/light blue (negative). Right
side, orange/red (positive), brown/pink (negative). Tap into wires and
route to pre-amp of enclosure.
HIGH LEVEL
INPUTS
GAIN
CROSSOVER
+
-
LINE LEVEL
INPUTS
+
-
POWER
GND
REMOTE
STATUS
15 Amp Fuse
Tan/Yellow (+)
Gray/Light Blue (-)
Brown/Pink (-)
Orange/Red (+)
Although, MTX has made every effort to assure proper wiring colors, MTX
is not responsible for any changes made by the vehicle manufacturer
which sometime occur. If wiring colors do not match then physical verification is required.
CONNECTION TO ENCLOSURE
15. Connect speaker wires to high level inputs of pre-amp.
Note: Patented BTL turn on circuitry- amplifier senses DC offset provided by
“high powered” or BTL type head units. This feature turns the amplifier on
automatically if you are using high level inputs.
3 4
Loading...