+ Try to test the elasticity of the diaphragm by pressing the test on it and see if it has quickly return the initial position or not. The elastic diaphragm type will bring relatively deep sound and do not be late hour, definitive sound.
_ Of course there is also plenty of other ways, depending on the experience of each person. But remember it is important to clarify whether tried by no matter what, then the audio experience with your new ears is the most important issue.
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