Simple iPhone 6S+ phone holder with sound deflection

My iPhone 6s+ has a slim, soft cover on it and measures about 83mm wide opening with a touch of room. This is designed to reflect sound outward so I can listen to my audiobooks without being a headphone zombie. I did not try to use minimal material because I want a low resonant frequency to kill the tinny sound of the speakers, and has a largish base to keep from being knocked over.