1999 Audi A4 Four JL Audio 8" free-air subs found their home in this low profile rear deck. For esthetic reasons they are down firing. This set-up has great performance with minimal loss of trunk space.

1999 Audi A4 Another option is to build a custom fiberglass sub enclosure in the left rear quarter panel. An acoustically transparent cover was made out of perforated steel to hide the sub.

2004 Audi RS6 German sedans work extremely well with a free-air subwoofer set-up. Here the factory sub was replaced with a new deck holding three JL Audio 10" subs and a larger more transparent grille sunk into the OEM Alcantara Suede interior.

2003 BMW X5 4.6L The factory offers dual 6" ported subs in this right rear quarter, with very poor performance. We constructed an intricate subwoofer enclosure to fit in the original location. The solid plastic cover was also perforated for better performance.

2001 Chevrolet Pick-Up The small cab in this truck makes it hard to accommodate a sub box without taking up too much space. Our solution was a downward facing 8” sub right behind the center console.

2003 Dodge Dakota Here is another solution for pick-up trucks. The center seat was reconstructed out of MDF and now holds a 8” down-firing sub. JL Audio Stealth boxes are available for many applications. But if not, we make our own.

1987 Ferrari 328 GTS This 8” sub in the passenger foot well can be shown off or hidden by placing the grille on it and putting the factory floor mat over it again. The fuse box that resided here was relocated under the dash.

2004 Ford F-150 We found just enough space under the left rear seat to squeeze a 10” JL Audio subwoofer facing down.

2004 Lotus Elise As with many convertible sports cars, we utilize the passenger foot well to hold a small sealed sub enclosure. It is the only location in the car that gives any kind of top-down performance. With a solid grill and floor mat in place no special care needs to be taken to protect it either.

2002 Mercedes S 500 Great performance comes from JL Audio free-air woofers in European sedans. We were able to fit three 10” subs in this custom rear deck.

2004 Subaru WRX Sti This is a very traditional set-up, an angled sub enclosure with parallel sides, in the trunk, behind the rear seat. Face them forward for tight accurate bass or face them rearward for lower rumble bass.

1986 Porsche 930 Slantnose Here is a great solution for any older 911, two JL Audio 6W0 woofers facing down in this removable box. For esthetic reasons we incorporated a Plexiglas insert painted the color of the car with a SIM logo.

2004 Toyota Tundra Converting center consoles into sub enclosures is a little involved but a very effective solution. Here we extended the original console to accommodate two 10” woofers and reused some original pieces for that factory look. OEM vinyl adds the finishing touch.