I am not sure what it is called, but I am referring to the hard plastic piece just underneath the pads, that which holds the rings of the pads if one uses the rings. This piece itself is a black ring that is held in place by four screws.
What I found, compared to my HE-500 (which has several more than four screws), is that this piece with four screws lays very unevenly in the housing, so that the pads themselves are slightly bent inward toward the ear on the top and bottom of the ear, shaped concavely. This also compromises the seal of the pad to the housing itself. My HE-500's comparable piece is much more even and thus the pads are much better sealed to the housing and more comfortable. I should say I noticed this effect on both channels of the drivers.
If I unscrew the piece in the HE-6, this black plastic ring lays slightly flatter, but not as flat as it does in the HE-500's. I am wondering if this is an unfortunate side-effect of the HE-6 using only four screws, making the distribution of the screws inadequate to hold the piece evenly and flatly in place. Is this normal for the HE-6 to be uneven here, or do I have a defective piece? I can post pictures later when I get home. I have hesitated to attach the Vegans until I know how to fix this or whether it is a problem in the first place.
Edited by Liu Junyuan - 8/27/15 at 11:24am