I burned the drivers in for about 20 hours, which made the drivers sound less harsh, and really brough out the bass. From what I understand, the SFI drivers are NOS from the 1980's, so the diaphram has been dormant for at least 20+ years.
I did figure out how to get rid of the huge peak @ 2K...
Tore apart an old black printer cartridge to get the ink-absorbing microcell foam. Cut in half, now sits between the back of the driver and the mesh. Improved the upper midrange response. However, I can't help but notice that some hi-end has disappeared after doing this.
Less dampening = better trebel response?
I will say that the bass response is definitely not like the Beats, or other bass-heavy phones.
But this is a good thing, in my opinion. Sound is relatively balanced.
Even without an open back, the stock MDR-v150s aren't sealed. There's a gap between the drive plate and the housing.
Don't mind at all. Could potentially become a good resource for people looking to mod the v150s
How would you wrap the headband? Any though to what materials you would use?
I'll try to get some pictures up this weekend of the teh insides