A client recently contacted the team at Perfectionist Autosound & Security in Anchorage to ask about having a custom subwoofer enclosure constructed for his 2019 Subaru WRX STi. We had a look at the trunk of the vehicle and checked out the requirements of the Kicker L7 subwoofer he wanted to use. After going over a few design and material options, we provided the client with a detailed quote to complete the project. He loved the plan and gave us the go-ahead to get started.

Custom WRX STI Subwoofer Enclosure

Our fabrication team designed this enclosure based on the specifications from Kicker and measurements in the vehicle. We constructed the main panels from ¾-inch MDF, and glued each of them to the adjacent panels to form an airtight seal that can handle the pressure created by the large woofer. We also added a brace to the center of the cabinet to reduce the chances of panel flexing at high volume levels.

Custom Subwoofer Enclosure Trim Panel

With the enclosure volume information and port dimensions in hand, our team set to work on designing the enclosure for this Subaru. The client wanted the bass to be loud while also playing low-frequency notes with authority. This goal would require a relatively large enclosure and a low tuning frequency.

Once the basic enclosure fabrication was complete and wrapped in durable black carpet, we set to work on the trim panel for the front panel. Our team created an opening for the subwoofer and a second one for the vent. We cut a large angle on the vent opening to help smooth the flow of air as it exits and enters the enclosure. The vent itself has a bend at the back of the cabinet and points upward.

We cut a rabbet into the back of the enclosure and trimmed the opening with a 45-degree angle bit so we could mount an accent panel that bears the STI logo. We cut the logo out of acrylic plastic with our Glowforge laser and then painted it with matte black paint, so it matches the cone of the Kicker subwoofer.

Alaska’s Custom Car Audio Experts

With the woofer mounted in place and the system dialed in, it was time to return the vehicle to the client. He was thrilled with the way the subwoofer looked in the trunk of his WRX and loved the way it sounds.

If you are in the Anchorage area and are interested in a custom subwoofer for your car or truck, drop by our store. You can also reach our team by e-mail using the contact form on our website.