A sound enhancement system for resonating chambers, in particular for drums, is provided. Specifically, at least one reflection plate is added within the drum cylinder whereby the reflection plate(s) vibrate sympathetically to add pleasing frequencies to the sound when a drum or other resonating chamber is struck. The reflecting plate(s) are preferably metallic elements mounted to the drum via the screws that attach the lugs. In the preferred embodiment, the reflecting elements are formed as tent-like or prism-shaped members that are mounted to vibrate within the resonating chamber. Other shapes are envisioned for the resonating elements.