Now I would like to know which front system (13er door…8.5 armaturenbrett) I can build…. besides that I have 2 channels free..how can I fill them with kick basses etc….for expansion or rearfill???is that possible?or does jmd have a good suggestion for the combi with the end level?(the sub runs over ne wanted 2/300 seperat from radio…is also ncoh per fader adjustable )…