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.

INSTALLATION: Follow the steps below
1. Place enclosure in trunk of vehicle, with woofer firing to the rear of the vehicle on passenger side (do not mount yet).
2. If externally amplified make speaker connections to the enclosure from your 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 20 for mounting directions.
AMPLIFIED THUNDERFORM
Routing Power Wire; we recommend a connection directly to the battery.
3. Remove driver door threshold, pull up firmly but slowly. The trim will remove easily.
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 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.

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