In this life many times the simplest is the most effective. This time we are going to apply basic principles of physics and sound to obtain more sound from where there was not before, and above all in a peculiar way.
To do so, it is as simple as introducing the iPhone with music playing through the speakers in a glass, and if it has a conical shape, then better than better, since the effect will be more noticeable than if we do it in a straight glass.
Try it at home and check the results, easy and simple.
Source | 9to5Mac
