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FORD F-150 SUPERCREW

21A7251

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 product online at www.mtx.com.

Vehicle Specific Subwoofer Enclosure

Made in the USA

One Mitek Plaza, Winslow, IL. 61089

1-800-225-5689 www.mtx.com

Summary of Contents for F-150 SUPERCREW

Page 1: ... 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 incurre...

Page 2: ...Plastic Covers 2 If externally amplified make speaker connections to the enclosure from the amplifier loosen terminal knobs a 13 mm nut driver can be used Connect speaker wires from amplifier to enclosure positive to red terminal knob and negative to black terminal knob Refer to Step 19 for mounting directions AMPLIFIED THUNDERFORM Routing Power Wire we recommend a connection directly to the batte...

Page 3: ...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 18 Reinstall threshold trim Locate and align holes in vehicle with pins on trim 19 Bolt seat bracket legs bac...

Page 4: ...trol 14 Plug power harness into amplifier pre amp 20A PWR GND REM EBC INPUT RIGHT LEFT GAIN X OVER STATUS 15 Replace 20amp fuse under hood 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 Setting Gain Turn gain knob on Thunderform pre amp to minimum counter clock w...

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