Would anyone know where I’d be able to buy a small sheet of the foam which is put inside the headphones between your ears and the drivers? Have a pair of Anandas which I am finding slightly too sharp, so looking for some of that foam material to try tame the treble a small bit.
Example of what I’m talking about https://global.beyerdynamic.com/foam-disc-new.html
(crossposted from headphonemods)
The relevant parameter is the specific acoustic impedance (flow resistivity) and the area.
Usually, nylon meshes are more precise than foam/felt or paper-like sheets.
Saati Acoustex meshes work very well.