Two things 1. FR of a driver gives a good hint the kind of enclosure to be created. 2. Initially, you were not able to see the images. There was some issue with the image links, fixed that. Let me know of your thoughts, primarily the build preference.

http://www.aliexpress.com/item/40MM-speaker-HIFI-fever-40PET-composite-f... They have posted the FR graph. It looks bass heavy and the response after 3kHz looks smooth enough. 1. But can they be said to be worthwhile a purchase? 2. Also, once I had purchased a driver from alibaba...

It could have been more helpful to actually show what a good headphones' FR would be like, so that while buying or DIY, we would be better educated.

Hey I just designed a nice pair of wooden earcups and I have some doubts to complete the unit into a headphone.   What kind of material would be most suitable for ear cushion, ear cushion fabric and headband cushion and fabric?   I presume what we can use for ear cushion and fabric can same...