Here is a novel thought! Tint your windows and use HEADPHONES. The ticket for tinted windows is much cheaper than the one for excessive noise and you'll still be able to fry your hearing as much as you want without annoying anyone else! Much cheaper too, as you'll save on system components, car harness, car electronics (due to undervoltages during spikes in current) and have money for the fines for tinting and driving with headphones when you don't get em off fast enough LMAO!