Designed to fit into 4" factory locations without vehicle modification, the GX428 delivers high-energy JBL pro sound for in vehicle applications. Leveraging our patented Plus One™ woofer cone with three Ohm voice coil and edge-driven soft-dome tweeter mounted into our all new proprietary tweeter deflector, all individually voiced to deliver authentic JBL pro sound for your next roadtrip. To ensure that you get a great performance even with the windows down, the three ohm voice coil extracts more power from the amplifier, delivering high output and deeper bass.

General Specifications