165 mm plug and play 2- way front system. Special designed bass, midrange speaker suitable for Opel Adam (from 2013), Astra J (from 2009), Cascada (from 2013), Insignia (from 2009), Meriva (2010-2014), Zafira Tourer (from 2012) and Chevrolet Malibu (from 2009), Buick Cascada (from 2013).Developed and produced in Germany. 2 - way system with glass-paper membrane 25 mm aluminum tweeter Glass fiber reinforced polyamide basket Customized x-overs