hello,I have a question… so I have to do a real nice installation in the car in the near future,by bass should not be saved! drive an a3 and the BOSE system is quite oke,dran I also want to change nothing, just a little more bass wouldn’t hurt (hear just meh music that contains bass) … so in terms of costs I would be so 2500 fr go that are so rough 1500Euro, have there with the woofer already ne idea but don’t know what would be better. it’s about a : Alpine SW R-1242D (about 500w RMS) and his big brother Alpine SWX-1042D (about 1000w RMS) I would either take 2x the SWR or 1x SWX (about the same from the performance) only what sounds better, 1 or 2?there are differences? and which amplifier fits to it? then still the cables, some GRP,villeicht insulation material and well lacquer for the GFK, now still a matter of the A3 8L has a enough space back but I want to waste as little as possible because I sometimes in the car a few case wants to put in etc. the spare wheel will certainly get out. does the money last for everything? and can it be done with all requirements? I would do as much as possible alone but everything I can’t do that means a few euros or just francen flow into a garage. would be happy about good answers if possible pictures and tips.