To be honest, it might be an easier starting point for you to modify something like a fostex t50rp before building headphones from scratch. It's cheap, it'll be a good experience to learn about headphone construction, damping and frequency response; best of all there are a ton of information...

Quote:   OP clearly asked if those specs = good sounding driver.   Quote:

Those specs are unimportant. What's important is the driver's frequency response and distortion values. You'll probably have to measure those yourself.

That's a terrific FR response. CSD curves are remarkably similar to the 007s as well. Congratulations!   Did he happen to take distortion measurements for the headphones as well?

Ah, you are using the same material as I am then. I am using a much thicker piece though. 5/8 inch stuff from ebay. 

I like your rubber gasket. :) I couldn't find one appropriate, so I used caulk instead.

It's great to see more people setting up their own measurement rigs. We really need to get our own thread going, somewhere to discuss the effect of various materials on the result, what should we consider as neutral results, and how can we process the raw data to get rid of the coupler's...

Results looking good! We see the importance of getting a good seal when measuring stats cans. :)   What is PUF? Does it stand for polyurenthane? If so, my measurements conforms to yours.

which chip? You'll have to load the right ALSA device driver. I remember that TI's pcm2702 usb dac works right out of the box.   Also, I'd simply go headless on the thing. If you really need to, xtunnel to the thing via ssh.

Quote:   I have purchased over a hundred c3675s, and I can confirm your sentiment. 

The raw uncompensated measurements are exactly what they are, raw measurements where the microphone's response and other artifacts introduced by the measurement rig are not corrected.

The problem persists. This time appeared while I was browsing the orthodynamic thread.

Quote:   OT, but they are on a rolling production schedule. I'm set to receive mine near the 28th.

Newark is farnell's US branch. Get a raspberry pi while you're at it.

Looks like a good rig. How'd you like it with the smyth realiser thus far?

FYI, Woo buys their stuff through Yamas, which runs staxusa.

Looks like I won't be able to make it this time... You guys have fun!

If I can finish my kgsshv on time. Too busy to work on it ATM.

If I can make it, I'll try my best to bring my kgsshv with me.

I might be interested in hopping in the carpool. I live downtown as well.    Quote: Did you fix the imbalance issue? If I finish the kgsshv before the meet happens I could try to bring it along with me.  

Quote: I would if it didn't cost so much. I think it's at least 120 dollars for the two cups. That's a spendy failure if the structure flexes and causes coloration... There's always making the backplate with steel bronze, but I think it's too costly and too heavy. I'll look more closely...

Birgir, you know I'm all up for the diffuse field EQ. ;)

Quote: Bleed money off you.  

Could we get the O2 amongst these charts as well?

I see there are some "Blue" Hawaii in the mix! :D