takato14
Headphoneus Supremus
Nice work looking forward to some favourable results.
What an awesome part you got made.
Take long to draw it up?
And is the center design based on anything else like a sennslimer perhaps?
Do you figure the front mesh adds anything to the tuning. I wonder if you could simply stretch some acoustically transparent sheer fabric over the front instead of bothering with the mesh, and maybe a further thin foam to tune and add additional protection.
It actually didn't take very much time to make, I have quite a bit of 3D modeling experience
I roughly copied the original design but altered it to do two things: seal against the side of the cup and make the new acoustic lens as insignificant as possible to minimize reflections from the material I used. I also heavily tested the stock tuning against the new baffle as well as several different damping schemes to see what I could get out of this driver and they were roughly the same sounding with no damping
the results of the damping tests are... not good
the driver appears to naturally do two things: 5-7dB peak at 2kHz and 7-10dB null at 3 to 5kHz, this is an absolutely massive hole in the FR and the headphone sounds extremely distant and cavernous, I have literally never heard driver behave this way before, ESPECIALLY not one with good transient and distortion performance like these have
both the stock and modded sides do this so it's purely a driver design issue and nothing I did to the backwave was able to quell it, I used literally every material currently at my disposal except for dynamat and I only managed to tame some bass fart and add maybe 3 or 4dB to 1kHz through 10kHz
changing pads didn't do much either, not even pads that are known to boost upper frequency range
the only thing thats left is frontwave damping, which means I have to experiment with a waveguide/acoustic lens like Koss does for the 4AAA to boost the upper region ($$$ + weeks of time waiting for all the different iterations of the part)
nonetheless, this is a very rare headphone and I am GOING to get it to sound passable