If you're wondering how to sound deaden a car door, Elite Auto Gear has the tools and tips to get the job done right. Start by removing the interior door panel to expose the metal frame. Clean the surface thoroughly to ensure the deadening material adheres properly. Next, apply a sound deadening mat or sheet—cut it to size and press it firmly against the metal, especially around speak... https://soundskinsglobal.com/pages/add-car-sound-deadening-for-best-car-audio-system