A waterproof housing is provided with an upper shell piece having a cone positioned over a non-waterproof (e.g. paper) speaker. The cone has conical stepped depressions mimicking the shape of the speaker. A speaker retainer presses the speaker in an air tight seal to the upper shell to assure that air is trapped in the chamber formed by the speaker and the upper shell. The circumference of the cone is a waveform, which allows a stiffer center plastic portion of the cone to vibrate when the sound waves hit it. More particularly, the cone is coupled to a cylindrical collar portion of the upper shell by a web of plastic material sufficiently thin so that the cone vibrates in sync with the speaker and emits the sound.
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