MTX Audio THUNDERFORM User's Manual
Contents
1. Make Sure You Get Enough Connect with StreetWires the professional installer s STREE J WIRES choice streetwires aa MX One Mitek Plaza Winslow IL 61089 1 800 225 5689 www mtx com 21A7240 MIS THUNDERFORM CHEVY S 10 REG CAB GMC Sonoma Isuzu Hombre TO ech cas eT RT one pe a x Vehicle Specific Subwoofer Enclosure Made in the USA READ ALL DIRECTIONS CAREFULLY BEFORE BEGINNING MOUNTING LOCATION The enclosure mounts behind the driver s seat on Chevy S10 Regular Cab Trucks GMC Sonoma and Isuzu Hombre TOOLS REQUIRED FOR INSTALLATION Powered Screwdriver 2 Phillips Head Bit Wire Cutters 5 16 Wrench Terminal Crimpers INSTALLATION Follow the steps below 1 Place enclosure behind seat with woofer firing forward do not mount yet 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 25 for mounting directions AMPLIFIED THUNDERFORM Routing Power Wire we recommend a connection directly to the battery 3 Remove driver side threshold trim pull up on trim it will remove eas ily 4 Using furnished wiring harness route 10ga red power wire starting at pre amp location Route wire on driver s side over to threshold and under2. 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 www mtx com
3. holding the radio in the dash 17 Behind the radio locate the rear speaker wires Colors are right channel dark blue positive light blue negative and left channel brown positive yellow negative Tap into wires with the supplied RCA High Level input wires and route over to drivers 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 manufac turer which sometime occur If wiring colors do not match then physical verification is required CONNECTION TO ENCLOSURE 18 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 Optional EBC Electronic Bass Control 20 Replace 20amp fuse under hood
4. r 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 i i OO ome o oO 0 Low Level Signal Optional EBC Electronic Bass Control Turn On Lead 21 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 22 Adjust gain and crossover Setting Gain 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 loude
5. short bit 7 Route 10ga red power wire through grommet into the engine compart ment 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 Ignition OFF When Disconnecting Battery Always turn the ignition OFF when connecting or disconnecting battery cables Failing to do so may damage the Power train Control Module PCM or other electronic components 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 SPEAKER WIRES 12 The best place to find speaker wires is behind the radio 13 Remove 4 7mm bolts from trim underneath steering column 14 Remove 3 bolts holding the instrument cluster trim panel Pull along edge to unsnap 15 Unplug lights and air bag cut off switch on the backside of the trim panel 16 Remove 2 bolts
6. st listening level before distortion 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 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 23 Reinstall radio by reversing the removal instructions 24 Reinstall threshold trim Locate and align holes in vehicle with pins on trim and snap back into place 25 Using screws provided install the enclosure into vehicle as shown below carpet to the front of vehicle 5 Open hood 6 Drill a hole through the fire wall Locate a spot low on the fire wall on the driver 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 Firewall Drill Hole for Grommet Battery Note To avoid any damage to parts inside engine compartment drill from inside of vehicle using a
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