Hellenback
500+ Head-Fier
- Joined
- Apr 15, 2007
- Posts
- 941
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- 23
I noticed that the membrane of the driver in the HD600s is different than the membrane in the HD650s. While the mesh is silk (and looks like it) in the 600s, in the HD650s it looks more like a fine metal-mesh material. Did Sennheiser change the material used to attenuate the driver or did they just use tougher silk?
