Car: Opel Astra J Sports Tourer (Kombi) no spare wheel, rear seats will usually remain folded (wg. charging area). Radio: Original Opel CD 500 Navi Germany (remains in) with Infinity Sound System (but flies out directly again – the fiber has packed me again;-) After weeks of information phase, intensive exchange of views in forums and some consultation with dealers I decided for the following concept or components: 2-way front system (in original) Installation openings: Eton Adventure A1-160 SGhttp://www.etongmbh.de/…/ 25 cm Subwoofer (in enclosed housing in spare wheel housing): Eton 10-630 HEXhttp://www.etongmbh.de/…/ 4-channel power amplifier (on subwoofer housing): Eton PA 800.4http://www.etongmbh.de/…/ Processor: Audison bit Tenhttp://www.elettromedia.de/index.php?idcatside=56 Wheel housing (individual production): MDF, reinforced, 8-angle with end stage mounting, 25 liters, closed base plate (individual production): with grid insert atz and acoustic carpet cover door insulation (bitumen and alubutyl), installation (MDF adapter rings, 25 mm2 power supply) and measurement sound processor by Car-Hifi expert. I picked up speakers and power amplifier yesterday – processor arrived today at the dealer. Car will hopefully come next week. I’ll make pictures later and upload them.