View larger What Comes In The Box? One pair of speaker wiresMounting screwsTwo custom tooled grillesMounting template View larger Cone – Poly Injection Polyurethane, categorized as a polymer, is a resilient, flexible and durable manufactured material that can take the place of paint, cotton, rubber, metal or wood in thousands of applications across virtually all fields. It can be hard like fiberglass, squishy upholstery foam that can be protective like varnish, bouncy like rubber, or sticky like glue. In the case of our cones, this material allows for maximum flexibility that produces great sounding speakers lasting a long time. View larger Tweeter – Mylar For a modern edge, an ideal car speaker is the high tech Mylar tweeter, as it generally has more ability for a wider variance of sound modifications and channel handling. Unlike paper cones, the Mylar has a higher rate of durability as the cone is made of a plastic poly material, which does not rip or tear easily under abnormal frequency changes. View larger Surround – Foam Up until about 30 years ago, foam surrounds tended to deteriorate quickly, but due to recent advancements, the average life span of standard foam surrounds is about 8 to 16 years. New foam formulas last much longer and are a superior product for speaker drivers that need a large excursion (how much the cone needs to move back and forth). Foam keeps the cone centered and yields a high excursion. Foam is self damping (the ability to control undesirable movement of the speaker cone) and reduces its own standing waves. It is also very light and has a minimal effect on the motion of the cone. Foam can be mixed with other substances to produce different flex and strength properties. View larger Rear Of CH4630 View larger Voice Coil – Aluminum Our speakers are capable of higher or elevated temperature strength and fatigue properties that will increase performance and efficiency of heavy duty play time through lower weight and higher operating temperatures. View larger Custom Tooled Grills