
JBL GX528 is an 8-inch high-efficiency car subwoofer designed for drivers who want tight, punchy, and accurate bass without needing a large enclosure. Part of JBL’s renowned GX Series, this subwoofer delivers powerful low-end performance that enhances your entire car audio system, making your music fuller, deeper, and more exciting.
The polypropylene woofer cone is engineered to deliver strong bass response while staying lightweight and rigid, ensuring clear sound with reduced distortion even at high output levels. Paired with the rubber surround, it maintains stability, durability, and long-term reliability — perfect for daily driving and high-volume playback.