Ground Zero GZCS 100BMW-SQ+D

Completely Plug & Play upgrade to your BMW sound system! Made In Germany! All you need are tools to dismantle the door card. All connectors and needed accessories are included in this package. High quality midrange speakers and 25 mm silk dome tweeters. Both speakers are designed to BMW OEM locations both physically and for best possible sound. Some BMW models have very strong boost on higher frequencies. This system includes level adjusment unit for tweeters that has 2 possible levels. This helps making sound much more balanced in those cars. Also included is highpass filter to door speakers. This makes sound much more accurate especially at higher volumes. Filter cuts out the frequencies that are better played from underseat woofers.