Dynaplate is an exotic constrained layer damping material that structurally reinforces car body panels for maximum Sound Pressure Level (SPL). This damping material was specifically engineered for the SPL rules and power classes of dB Dragracing, USACi, IASCA and IdBL. Using a setup of only two layers yields non-flexible panels that prevent the ballooning effect common in SPL vehicles. This Dynaplate setup also reduces vibration better than any other product on the market. What you get is the most bass possible without modifying the appearance of your vehicle’s interior.