All of our Special Car speakers differ from our “standard” ESB Car Audio speakers… different not just for sizes and dimensions, but also for the technology used to match limited cockpit spaces and low power factory amplifiers. They boast high grade neodymium magnets, lighter cones, lighter, rigid aluminum baskets, and a new voice coil complex. Each model has a dedicated adapter to exactly match the space requirement and mounting holes of each vehicle model. All the speaker connections are plug and play with the original factory wiring. speakers are then equalized for each specific car's environment with an individually designed crossover.