It's partly an advertisement for JBL, but I guess similar upgrades could be made with other brands. I just wish they had tried to use just one subwoofer in the stock location instead of adding a second in the cargo area. Would be nice to know you can get decent bass response without taking up cargo space.
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2022 Kia Carnival EX Yearlong Review: Wow! We Make a Big Audio Upgrade
Taking the next step toward bringing SX-level “prestige” to our midlevel EX with aftermarket audio.