Focal ISUB Inside Series 賓士 C E S GLC 系列 直接安裝 腳踏空間重低音喇叭

The footwell fit on my Mercedes is perfect—no gaps or rattling at all. Sound is clean and punchy, really fills the cabin without shaking things loose.

Installing these in my C Class was surprisingly easy since they’re designed as a direct fit, and the bass feels much tighter and more controlled than my old aftermarket box. The way they integrate into the footwell without stealing any trunk space is a huge win for me.

Install took me about an hour because the harness is RHD-specific and plugs straight into the factory footwell spots, no cutting needed. Sound is clean and tight on bass-heavy tracks, though they don't hit quite as hard as I hoped for the price. Still, a solid upgrade over stock for daily driving.