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Subwoofers
Just as the rear seats are gone, so is the thought of luggage space. Residing in the rear of the GTI are two JL Audio 13W7 subwoofers, each enclosed in their own sealed chamber. The enclosure is relatively small, roughly 1.9 cu.ft. (Net volume per woofer), with the subs loaded towards the rear hatch to improve the bass response. Made entirely of MDF, with the exception of the 1-inch thick acrylic top, the box uses 1" thick wood to resist resonance incurred by the pressure inside the enclosure while the subs are under extreme power. The acrylic top acts as a window that provides on-lookers with a glimpse of the magnificent baskets and motor structures on the 13W7's.
As you may have already guessed, structural integrity is very important to JL Audio. In the case of the subwoofer box, a steel cage was framed around the enclosure and bolted directly to the floor. A good idea as the enclosure weighs in close to 150lbs.
The area surrounding the enclosure is flanked with silver painted fiberglass and polished aluminum. No wood or body filler here either! Directly around and below the subwoofers is a silver painted fiberglass piece that scoops at the rear as to direct the bass upward. Mounted between the subs is a structural member made of aluminum. This may look like a decorative piece with the W7 pl...ue at the top center; however, it is actually a structural component that mounts directly to the enclosure and the steel cage. Above the enclosure sits another perfectly crafted fiberglass panel. The rear of this panel overhangs the enclosure. This overhang contains 180 super-bright blue LED's that illuminate the subs and hatch area. These were chosen for reliability and vibration resistance. The rest of the blue lighting in the car is custom made neon.
