[alpha421]

Thanks for all the interest. Drivers are going to pace88.

 

[et.haan]

Hopefully receiving my drivers soon, but in the mean time, anybody have a zobel for Sonion 38D1XJ or sonion 2389D

Not dedicated to series or paralel, so take that as you will

 

[dhruvmeena96]

Thanks for all the interest. Drivers are going to pace88.

@pace88
He is an amazing guy

By the way @alpha421

I had a concept of a cable with zero internal reflectance and extremely low resistance without using any pure expensive stuff....
Asking if you are interested

 

[pace88]

@pace88
He is an amazing guy

By the way @alpha421

I had a concept of a cable with zero internal reflectance and extremely low resistance without using any pure expensive stuff....
Asking if you are interested

thanks Prof.D

 

[alanwcruz]

@dhruvmeena96 how right you were...

3D printed shells + MASM 7 + O2 Amp (massdrop) + oppo HA2-SE

 

[et.haan]

@dhruvmeena96 how right you were...

3D printed shells + MASM 7 + O2 Amp (massdrop) + oppo HA2-SE

nice, what printer? What resin?

 

[eunice]

@dhruvmeena96 how right you were...

3D printed shells + MASM 7 + O2 Amp (massdrop) + oppo HA2-SE

I have so many questions. How did you do the scans? Photogrammetry? How is the comfort, can you feel the layer lines/pixel artifacts? What resin, what printer?

 

[alanwcruz]

nice, what printer? What resin?

I have so many questions. How did you do the scans? Photogrammetry? How is the comfort, can you feel the layer lines/pixel artifacts? What resin, what printer?

@et.haan Elegoo Mars using Elegoo transparent blue.

@eunice yup, used photogrammetry, though I had to paint my impressions with some green and black chalk spray paint to get good results, comfort wise they are much more comfortable that my previous manually made shells, but I think this has more to do with the digital post processing on the scans since I apply a coat of lacquer after everything is printed and assembled. Assembly is a million times easier, having perfect bores and consistent shell width makes things very very easy.

 

[et.haan]

Here is what I am thinking - Sonion 38D1x - parallel (6 ohms DC)
zobel - 135uF cap (130uF MLCC's will be bought) + 7.625ohm resistor (7.68 will be bought
Lowpassed at 150hz - (RC components will be bought once impedance with Zobel is mapped

Sonion 2389D - series - I still need inductance values for Zobel (8 in series ohms DC) (I contacted Sonion)
Bandpass from ~300hz to 7khz

Connect these two in series for 36ohm AC resistance average

L pad or U pad (would appreciate recommendation) both 15db

Est65da01 highpassed 8khz
I read somewhere it doesnt need zobel, and besides, the Inductance looks pretty good

Connect these two, in series, for a 56ohm output at the 2pin

Anybody see any problems

Impedence will be pretty flat

Only 3b/octave, unless you guys think otherwise

 

[et.haan]

@et.haan Elegoo Mars using Elegoo transparent blue.

@eunice yup, used photogrammetry, though I had to paint my impressions with some green and black chalk spray paint to get good results, comfort wise they are much more comfortable that my previous manually made shells, but I think this has more to do with the digital post processing on the scans since I apply a coat of lacquer after everything is printed and assembled. Assembly is a million times easier, having perfect bores and consistent shell width makes things very very easy.

Defintely interested in this process. Did you wax and trim the impressions, or just trim them? Do they extend pass the second bend? I love the fit of past the second bend, but its a real pain to get to feel right with wax. It took me like 15-20 dip attempts for nice (even) comfort.

Lack3 lacquer? Individual bores, or did you do multiple holes in your CAD software

 

[alanwcruz]

Defintely interested in this process. Did you wax and trim the impressions, or just trim them? Do they extend pass the second bend? I love the fit of past the second bend, but its a real pain to get to feel right with wax. It took me like 15-20 dip attempts for nice (even) comfort.

Lack3 lacquer? Individual bores, or did you do multiple holes in your CAD software

No wax and no trimming, these two steps were done on the 3D model, I made the cut on the model just above the second bend, on the 3D model I made a .6mm extrusion on the final 5-6mm of the canal and the fit is just perfect, not too tight not too loose, took me a couple of tries to get that parameter, I started with a .8mm extrusion and went down from there.

I made the MASM7 with two bores, both holes were done on the software side.

You can see both bores and the extrusion on the canal in these pictures:

 

[et.haan]

No wax and no trimming, these two steps were done on the 3D model, I made the cut on the model just above the second bend, on the 3D model I made a .6mm extrusion on the final 5-6mm of the canal and the fit is just perfect, not too tight not too loose, took me a couple of tries to get that parameter, I started with a .8mm extrusion and went down from there.

I made the MASM7 with two bores, both holes were done on the software side.

You can see both bores and the extrusion on the canal in these pictures:

very interesting, very well done. I would love to try integrating tubes into the shell like a certain company does (65-1 audio)

Did you filet (or whatever your CAD calls it) the tip extrusion, to smooth the transfer between it and the canal?

 

[alanwcruz]

very interesting, very well done. I would love to try integrating tubes into the shell like a certain company does (65-1 audio)

Did you filet (or whatever your CAD calls it) the tip extrusion, to smooth the transfer between it and the canal?

Sure did, it's called a smoothing deform. Any sharp corners on anything that has contact with your inner ear is very painful.

 

[dhruvmeena96]

@dhruvmeena96 how right you were...

3D printed shells + MASM 7 + O2 Amp (massdrop) + oppo HA2-SE

Did you like it..
Nice

Too much midrange though

 

[sanekn]

uys pls help the noob out, is my sheme any good? It's for a curing chamber. Thank you folks.