165 mm plug and play rear coax system with special designed bass, midrange speaker and integrated aluminum tweeter, suitable for Opel Adam (off 2013), Ampera (off 2012), Astra J (off 2009), Insignia (off 2009), Karl (off 2015), Meriva (2010-2014), Mokka (off 2012) and Chevrolet Malibu (off 2009), Buick Encore (off 2012). Developed and produced in Germany. Coax system with glass-paper membrane Glass fiber reinforced polyamide basket Integrated 25 mm aluminum tweeter Integrated tweeter capacitor