Speed of Sound Audio Experts delivers a powerful Jeep audio upgrade built for off-road performance and all-weather sound. This setup includes a Kenwood 5-channel marine amplifier, Ground Zero 10-inch Jeep subwoofer, and a fully waterproof Jeep sound system. Specializing in Jeep Wrangler and Gladiator audio upgrades, we provide soft-top bass solutions and custom Jeep audio installation in Somersworth, NH for serious off-road audio builds.