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Discussion in 'DIY (Do-It-Yourself) Discussions' started by chinsettawong, Jun 20, 2010.
I also use a piece of 5 mm MFD with double sided tape for holding the PCB. It works nicely.
If I accept that the holes must have a diameter 1mm equal to the gap (0.5mm) multiplied by 2 at maximum, please let me know your opinion about the density of the holes on stator ? In my previous made headphones i have 1.8mm hole on stators.
I designed and made STAX style male connectors with my 3d printer. As you can see i designed also the bolts for cover.
Interesting, to me they look a bit like my old Jecklin Floats without the plastic helmet .
Do they sound simliar too Jecklin Floats too?
There is no way to compare them using the same amp. But for my JF clone with KGSSHV Carbon, they sound much better than my JF with my EL34 SE.
I'm new ... watching and interesting
I would like to listen .. If Khun Watchara free I like to get opportunity when you're free..
Hi Khun Boonyoung,
You're always welcome to try my headphones and amps. Please PM me and I'll arrange the time for you.
Hi Khun Watchara;
Million thanks for you kindly , this is my best opportunity to get direct information from .. Normally I will be free on Friday I stay in Bangbuathong Nonthatburi ..How can I contact you ? if you are not comfortable to give me phone number .. I have line ID or Skype account..
I didn't notice that the plug was from your 3d printer. It looked very much like mine. I like your screw in feature. Will you share your 3D file with us?
What kind of filament do you use?
Hi Khun Boonyoung,
I've sent you a PM message. Please check.
PLA professional pro1 inofil3d
How can we measure the tension? Does exist a sensitive tension meter ? Can we measure the tension by means of the pressure of a known weight on the membrane?
I downloaded the Advanced FFT analyzer and I checked my Electrostatic Headphones made by me (by means of white noise generator) that the resonance frequency is about 250Hz. In contrast my old STAX SR Lambda Headphones have resonance frequency about 150Hz.
I can explain it because i tensioned the membrane with very high tension. Now I plan to construct with my 3D printer a tensioning mechanism. After R&D about the correct tension, I will put on the tensioned membrane a known weight and i will measure the z position of this weight on the membrane. In the next membrane tension I will adjust the tension of the membrane in order to have the same z position of the known weight.
I believe that I have finally come up with something better than what I've been using for quite a while.
3D printers are really amazing.
After studying the relationship between membrane tension and resonance frequency I made headphones with resonance frequency 80Hz. I made also a centre hole. The bass response is amazing. Of course the responce in middle and high frequencies are the best. I also observe the excellent stereo image with depth. In the near future I will post some photos.