I am working on installing 3 sets of comps in the front doors of my truck. I have all of the speakers installed but am still working on exact placement and other details. I realized that I still have more to gain with tweaking my set up but I expected them to be much louder than they are. I still don't think once I am finished that I will be happy with it. Now I was told the other day that there is no way you could be running 3 sets of comps and it not be loud enough. What does everybody think? Looking for advise and constructive criticism. Second question I have is that should each speaker in the door be separated from each other? If not aren't they kind of working against each other a little? Seems like there would be some cancellation between them. Front 3 comps running 75w RMS each off of a JL XD600/6 Rear comp set running 40w RMS 10" Pioneer DVC sub running 120w RMS I will see about getting some picks up to help.