Ford Ranger Vehicle Specific Subwoofer Enclosure PDF Reference Manual

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 enclo- sure at the top towards the rear of the enclosure as shown below. 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 enclo- sure 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. 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 Battery Firewall 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 termi- nal 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 termi- nal then ring terminal and into other side of factory battery terminal and retighten.

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. 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 verifi- cation 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. 16. Plug power wire harness into amplifier pre-amp. 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 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. 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 20. Reinstall kick panel on driver side. Replace threshold trim panel.

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