I just tried doing the mods that Marv suggested on the first page. That is, removing the damping directly behind the driver and cutting a small hole in the foam in front of the driver. Highly recommended! This doesn't really improve the very lowest bass all that much, but it does bring up that hump centered around 100Hz a tad and may even shift it down a bit closer to 80Hz. They sound much more lively and impactful now in this regard. This also really helped with some of the odd grain I noticed in the treble before. I noticed before when adding damping inside the HD650 cups (in addition to the stuff directly behind the driver), it did something weird to the treble despite measurements looking good or staying about the same in the upper regions. I was actually using additional front damping before this to boost the bass and help reduce that grain I noticed, but removing the back damping foam stuck behind the driver works a LOT better and actually allows one to cut down on the front damping from the stock config. So, in a nutshell, try the mods on the front page.One small thing I added to these mods, though, was putting some rug liner on top of the silver mesh surrounding the driver, under the existing foam. This is only cut to cover the mesh, so it's much smaller than the foam, and has an opening in the middle where the driver is exposed....
Do people find the HD6nn to be position sensitive? (or am I asking a newbie question: maybe all 'phones are?)
Kind of thread that makes me want to test them one more time in a long run. And maybe, in the end, get some proper amping for my HD600...my O2 is so boring...Ali
I hate this thread hobby. Makes me want to justify owning both an HD650 and HD600 way too much gear.
FYP Ali
