get a peice of tin foil, wrap it around one of those cardboard tubes that you get from paper towels are something, get a wicker basket and put a baloon stretched over it, tie either 1 pair, or two pairs (depending on if you want svc or dvc coils) of twist ties and attach them to the foil, and if you want 2 ohm coils make a circle figure on the end of the twisties, and leave them straight for 4 ohm.. now, this will be the most powerful woofer ever, it needs 100,000,000 rms watts, by doing so wire the coils in parallel with your gas tank and pos battery terminal, start the car and push the gas and it will be a custom made subwoofer
