In this Photoshop tutorial I'll teach you how to make a media icon.

Open a new file (File>New) that would have 450x450 px and 72 dpi.
Select after that Ellipse Tool (U) to represent the primary layer of loud speaker to be next.



The layer’s parameters:
Fill 0% on the layers.
Blending Options>Drop Shadow



Blending Options>Gradient Overlay



Gradient’s parameters:



Blending Options>Stroke