MTX THUNDERFORM User manual

FORD F-150 REGULAR CAB
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 altera-
tions 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 product online at mtx.com.
21A8125
Vehicle Specific Subwoofer Enclosure
Made in the USA
One Mitek Plaza, Winslow, IL. 61089
1-800-225-5689 mtx.com

READ ALL DIRECTIONS CAREFULLY BEFORE BEGINNING
MOUNTING LOCATION: The enclosure mounts behind rear seats, firing for-
ward, in Ford F-150 Regular Cab Trucks.
TOOLS REQUIRED FOR INSTALLATION:
Powered Screwdriver #2 Phillips Head Bit
Wire Cutters 5/16” Wrench
6" Bit Holder Extension Socket Wrench
10mm Socket
INSTALLATION: Follow the steps below
1. Slide front seats to full forward position. This will give you more room to work
with.
2. You may want someone to help you for this step. Lift enclosure into your truck
and place it against the rear wall with the woofers facing forward.
Note: Some vehicles may be equipped with a storage tray, held in place with (4)
10mm bolts, that first need to be removed before the enclosure will fit properly.
3. If externally amplified, make speaker connections to the enclosure from the
amplifier. Connect speaker wires from amplifier to enclosure, positive to red ter-
minal and negative to black terminal.
AMPLIFIED THUNDERFORM
Routing Power Wire; we recommend a connection directly to the battery.
4. Remove drivers side threshold trim; pull up on trim, it will remove easily.
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
_+
20 Amp Fuse
Low Level Signal
Turn On Lead
20 A
PW RGN DR E M
EB C
INPUT
RIGHTLEFT
GAINX-OVER
STATUS
Optional EBC
(Electronic Bass Control)
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5. Using furnished wiring harness route 10ga red power wire starting at pre-amp
location (center rear wall of truck). Route wire on drivers side, over to threshold
and under carpet to the front of vehicle.
6. Open hood.
7. Drill a hole through the fire wall. Locate a spot low on the fire wall on the pas-
senger side. You should always look to find a clear path. Drill a hole from inside
of the vehicle into engine compartment and insert grommet. You may also find a
pre-existing, unused rubber grommet in this location that you can pass the wire
through.
Firewall
Battery
Drill Hole
for Grommet
Note: To avoid any damage to parts inside engine compartment, drill from
inside of vehicle using a short bit.
8. Route 10ga red power wire through a grommet into the engine compartment.
9. Route 10ga red power wire through engine compartment safely away from any
moving or hot parts that could damage the wire.
10. Cut 10ga red power wire to length, connect the supplied fuse holder from the
wire kit to the end of the wire.
Setting Crossover
You should set the crossover to your own personal listening taste. The cross-
over 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
19. Reinstall threshold trim. Locate and align holes in vehicle with pins on trim;
and snap back into place.
20. Push enclosure back against the rear wall of truck.
21. Using the supplied hardware, secure the enclosure to floor of vehicle as
shown below.
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11. Remove 20amp fuse from MTX fuse holder. Connect furnished ring terminal
to positive side of battery. Remove 5/16" bolt from factory battery terminal. Place
ring terminal on battery post and retighten nut.
Ignition OFF When Disconnecting Battery
Always turn the ignition OFF when connecting or disconnecting battery cables.
Failing to do so may damage electronic components.
12. 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.
As always, before screwing or drilling check to make sure you will not damage
any wires, hoses or cause damage to the vehicle.
Factory Speaker Wire Colors
13. In the channel on drivers' side threshold, locate the left and right rear speaker
wires. They maybe also be wrapped in black tape or twisted together. Wire colors
for the left rear speakers are: tan/yellow (positive) and grey/light blue (negative).
Right rear speaker wire colors are: orange/red (positive) and brown/pink (nega-
tive). Tap into wires with the supplied RCA High Level input wires and route over
to passenger side threshold and to pre-amp of enclosure
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
14. Connect speaker wire RCA's to the 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.
_+
20 Amp Fuse
20A
PW RG N DRE M
EB C
IN P U T
RI G H TLE F T
GAINX-OVER
STATUS
STRIPED
SOLID
SOLID Orange/Red (+)
Brown/Pink (-)
Grey/Light Blue (-)
Tan/Yellow (+)
Optional EBC
(Electronic Bass Control)
15. Plug power wire harness into amplifier pre-amp.
2 0 A
PWRGNDREM
EBC
INPUT
RIGHTLEFT
GAINX-OVER
STATUS
16. Replace 20amp fuse under hood.
17. When amp turns on, LED will display red during diagnostic mode, and then
green, signaling amp is on and functioning. Amp will only turn on when radio is
on.
18. 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 may want to turn down the
bass slightly on the source unit. 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.
Optional- The EBC, or Electronic Bass Control, allows a remote bass control to
be adjusted from the driver's seat.
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