Hello, I would like to improve my H1 sound because the sound of the work sounds terrible. I found little or nothing on this topic in the forum, therefore this new topic. I would like to install a 4 channel amplifier (best type D due to size) in the car. Now there is very little space for it or have I found no idea where it can be installed without disturbing it. Preferably it should be installed near Amatur. Has someone ever come in this direction? Inte Ressant would also be the power supply from the battery to the passenger compartment. I did not discover a pre-installed breakthrough for the power line (16-25qmm). Do I actually have to drill a hole there myself? In the engine compartment I did not want to leave the amplifier, there would be space. Only the energy capacitor 1 Farat for the voltage peaks should be installed there. I would like to install an existing 2 way system Eton 1 in the door. This was already indicated in another topic. – with an axton system. Unfortunately no indication how the door panel can be removed without damage. The amplifier should enjoy this 2 way system and 2 other channels are brimmed for the temporary subwoofer. The rear factory speakers remain – since not important. Maybe someone was already further and can give me some suggestions. I will continue to document my installation and hope for a tonal embellishment in the H1.