First of all Hello together I have like many the problem that the trunk of my e46 ( Limo ) very well swallows the bass of my subwoofer. A solution is already in planning yet I still do not know exactly how to do this and wanted to ask if you can help me. At the moment my radio runs the already slightly older Axton CAB 300 with a magnat end stage. I have already broken my head and searched a lot on the net how to solve the subwoofer problem kan n (have about 30 tabs on in the browser) and have come to a decision. ==> For this purpose also my first question is it possible to plant the subwoofer from my KR into a new housing with a self-built bass refelx so that this reflex is possible on the sloping of the housing and at the height of the skisack opening ?? (The matching calculations must be done that I already know only if it is fundamentally or practically possible to convert a closed sub) Thanks in Foreground and greeting Flo