Not my pics but i found them interesting, i take it these all have the same transducer?
Thanks for sharing, Very intersting stuff. The membranes at least appear to be quite similiar. padam, Are the drivers of the Qualia and SA series the same size? Do you know what other differences there might be?
Most interesting. Back of the drivers: the Qualia seems to be open in the center (like MDR-F1), while the SA3000 and SA5000 are covered. All three has only one small "bass" hole in the surrounding paper filter (opposite the soldering points). Black or white may not be significant, unless the black SA has an extra layer over the white paper.
All in all - it's all in the tuning!
Very interesting, thanks for the pictures. Any more pictures on how they make these?
Put the Dremel down, it won't work.