BAV Sounds Ghost Underseat Ghost Subwoofer pair is the go-to benchmark for high quality PnP sound upgrades for your 2004-Current E and F chassis. (Most Harman-Kardon / Bang & Olufsen)
These two matched 8"" 100W RMS 8-ohm subwoofer pair is matched to provide lower thump and bass performance for the higher-wattages sound systems found in Upgraded BMW Sound packages. This kit doubles your stock bass output with an improved speaker response curve. Filling in the low end gaps your factory subs leave behind. In less then 90 min of time from start to finish, you can install these underseat subwoofers easily with direct PnP functionality.