How To Quiet Down Your Wrangler JL Interior
Installing hardtop insulation panels on your Jeep.
As most of us know, Wranglers are not the world's quietest vehicles to ride in, despite being impressively civilized these days. And while most of us would gladly take the tradeoff of increased sound levels for the experience Wranglers can give us on the trail, nobody is going to say no to a quieter interior. The Wrangler JL does use increased sound deadening over the JK, and is quieter overall; however, the top is actually thinner, making wind noise noticeable and sound insulation a must-have upgrade.
Starting with our AEV-equipped 2020 Jeep Wrangler JL Unlimited, we were looking for a product that looked premium, was durable and easy to clean, and would lower our interior sound levels. With a huge selection of products on the market, including the ones you can now order from the factory, choosing the right option can be overwhelming.
After a significant amount of research, we settled on Boom Mat from Design Engineering, Inc. (DEI). DEI is a company that was formed in 1995 and specializes in thermal and acoustic control products, plus the company's Boom Mat kit has received a ton of good reviews for performance and fit and finish.
Boom Mat insulation panels are constructed from a high-quality, marine-grade acoustic foam that resists mold and mildew, and the leather-look version we installed is easy to clean up with just quick wipe down from a damp rag. Boom Mat's Jeep Wrangler JL 4-door Sound Deadening Headliner kit comes in nine CNC-cut, peel-and-stick pieces, including the hardtop's central depressions, which aren't covered by all kits. And in addition to leather-look, there are versions available in black, gray, and white.
DEI claims a 3-4db improvement in interior sound levels on a stock Wrangler, and we saw a similar improvement with our lifted JL on 37s. Using a sound meter, we recorded the sound level at idle, 55, 65, and 75 miles per hour, with the pre-DEI numbers of 44db, 67db, 68db, and 72db, respectively. After installing the panels, we re-tested and saw a noticeable improvement. At idle, sound volume dropped to 42db (-2db), with 63db (-4db) at 55mph, 66db (-2db) at 65mph, and 69db (-3db) at 75mph. As an unexpected benefit, the factory premium audio system sounded much richer to our ears, and we no longer had the slight echo when talking to other passengers. Clearly these panels work, and with less tininess to the interior, our JL is a nicer place to spend those hours on the highway between trail rides.
Installation was easy enough for us to do in our front yard, and we are incredibly pleased with our decision to go with the DEI Boom Mat panels, especially with how nice they look.