MTX Audio Car Speaker F 150 SUPERCREW User Manual

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.  
FORD F-150 SUPERCREW  
Proof of purchase is required when requesting service, so please retain your sales receipt and take  
Vehicle Specific Subwoofer Enclosure  
Made in the USA  
One Mitek Plaza, Winslow, IL. 61089  
21A7251  
 
18.
Reinstall threshold trim. Locate and align holes in vehicle with pins  
on trim.  
4.
Route 10ga red power wire from furnished wiring harness starting at  
pre-amp location. Route wire under carpet on passenger's side, over to  
threshold along with factory wiring to the front of vehicle.  
5 Open hood.  
6 Drill a hole through the firewall. Locate a spot low on the firewall on the  
passenger's side. You should always look to find a clear path. Drill a hole  
from inside of the vehicle into engine compartment and insert grommet.  
Drill Hole  
for Grommet  
Firewall  
19.
Bolt seat bracket legs back down and put plastic bolt covers back  
on.  
Battery  
Note: To avoid any damage to parts inside engine compartment,  
drill from inside of vehicle using a short bit.  
7.
Route 10ga red power wire through a grommet into the engine com-  
partment.  
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.  
8 Route 10ga red power wire through engine compartment safely away  
from any moving or hot parts that could damage the wire.  
9 Cut 10ga red power wire to length, connect the supplied fuse holder  
from the wire kit to the end of the wire.  
10 Remove 20amp fuse from MTX fuse holder. Connect furnished ring  
terminal to positive side of battery. Remove 5/16" bolt from factory battery  
terminal. Pass bolt through factory battery terminal, then ring terminal,  
and into the other side of factory battery terminal and retighten bolt.  
Warning: Batteries normally produce explosive gases which can cause  
personal injury. Therefore, do not allow flames, sparks or lighted sub-  
stances to come near the battery. When charging or working near a  
battery, always shield your face and protect your eyes. Always provide  
ventilation  
5
2
 
11
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.  
14.
Plug power harness into amplifier pre-amp.  
SPEAKER WIRES  
12 In the channel on driver's and passenger's side threshold locate  
the rear speaker wires Colors are driver's side, yellow/blue (positive)  
tan/yellow (negative), and passenger's side, orange/yellow (positive),  
brown/purple (negative). Tap into wires with supplied RCA High Level  
input wires and route under carpet to the rear seat, over to pre-amp on  
enclosure.  
15 Replace 20amp fuse under hood.  
Although, MTX has made every effort to assure proper wiring colors,  
MTX is not responsible for any changes made by the vehicle manufac-  
turer which sometime occur. If wiring colors do not match then physical  
verification is required.  
16 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.  
17 Adjust gain and crossover.  
CONNECTION TO ENCLOSURE  
Setting Gain  
13.
Connect speaker wire RCA's to the inputs of pre-amp.  
Turn gain knob on Thunderform pre-amp to minimum, counter clock-  
wise. 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.  
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  
Optional- The EBC, or Electronic Bass Control, allows a remote bass  
control to be adjusted from the driver's seat.  
Setting Crossover  
You should set the crossover to your own personal listening taste. The  
crossover is adjustable to any frequency between 50Hz (counterclock-  
wise) to 150Hz (clockwise). As a guideline, the goal is to create the illu-  
sion 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.  
Optional EBC  
(Electronic Bass Control)  
SOLID  
Yellow/Blue (+)  
INPU  
T
TROUBLESHOOTING TIPS IF AMP DOES NOT TURN ON  
Check all connections at battery and that fuse is installed  
Check speaker wire connections  
Tan/Yellow (-)  
STRIPED  
SOLID  
Brown/Purple (-)  
Orange/Yellow (+)  
Check ground  
Check fuse on pre-amp  
3
4
 

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