Ihave a pretty nice audio system...Pioneer FH P6050UB HU, Pioneer TS S201 50W Tweeters (X2), 400W JBL oval (X2), a Blaupunkt 750W mono block amp and a 1000W Hertz Sub. The thing is i have 4 door speakers (not great ones - they are 150W panasonics that came with the car but they sound pretty decent actually - will upgrade to kenwood when i have the money) but only 2 are connected. People are telling me not to connect the other two because it will reduce sound quality. is this true? and why? also, i want to make my car neat - as in a plexiglass box for my amp, complete with neon lighting and carpets (currently, its just screwed to the back of my seat), etc. any place you know that does a good job of these things? and what sort of budget should i be looking at?