Installing a subwoofer in the trunk of your car will greatly increase the volume and sound quality of the stereo. However, when improperly installed, a subwoofer can make rattling sounds and have poor sound quality. Be sure to purchase a high-quality amplifier wiring kit and a sturdy subwoofer box. A poorly built subwoofer box can result in poor sound quality. Setting up a subwoofer in the trunk of your car should take less than 30 minutes.
Attach the subwoofer to the subwoofer box using a screwdriver and screws. If any screws are missing or if they are not tightly fastened, the subwoofer can rattle and have low sound quality.
Place the subwoofer box on a flat surface in the trunk. If the box is placed on a pile of clothes or other items, it can cause a rattling sound. The subwoofer box could also fall over and damage the subwoofer. Also make sure that there is nothing in the trunk that could slide around and hit the subwoofer.
Face the subwoofer toward the rear bumper of the car. This will increase the sound clarity of the music being played.
Attach an amplifier that has a power output recommended by the subwoofer manufacturer. Amplifiers that are overpowered can damage the subwoofer. Amplifiers that are underpowered will result in poor sound quality, low volume levels and can also damage the subwoofer. Connect speaker wire from the output port of the amplifier to the terminal cup of the subwoofer box. The terminal cup is a connection point between the inside of the subwoofer box to the outside.
Wire the subwoofer with an appropriate gauge wire. More powerful subwoofer and amplifier combos require a thicker gauge speaker wire. Installing too small of a wire can result in a loss of power to the subwoofer and force it to perform at a low level.
