OPEN SOURCE DIY Mic Project - ORS 87 - Stripped Down u87

[Juan Vargas]

hi the mounting of the transformer opening need to be orientated according to the mic frame fastening spots, you just need a PCB to hold the transformer? the one layout I made is to fit my TF22 Temu mic frame if you can measure the screw distance top and bottom is gonna be a taper shape I can try to fit it also with the ORS 87 circuit or just a PCB for the transformer?

 

[Korablev]

At the beginning of the discussion in this forum thread there was a message that the capsule works best if it is raised in the grid. So I decided to do an experiment and solve two problems at once.
1. Raise the capsule by 8 mm higher in the HL-95 case.
2. Make a diffuser on a 3D printer in the form of a set of pyramids.
I have absolutely no idea how this will work, since I am waiting for printed circuit boards and components for them for about 2 months.
But I have already printed a diffuser under the capsule. Obviously, you can experiment with the shape and size of the pyramids. For those who want to experiment with sound, I am posting all the necessary files. I use a simple capsule mikparts k87, but for ORS 87 I have something better in stock for the future.

 

[rankot]

Do you mean R9 and C5? They are an alternative way of achieving a high-frequency roll-off, instead of the C12/C13/R14/R15 feedback network. Nothing wrong with using them, it's just not how the U87 circuit does it.

I was referring to this schematic, sorry for not including it. Then I noticed that they are labeled as R9/C5 on your schematic with mods. There are few different schematics circulating in this thread, so I wasn't sure.

 

[Juan Vargas]

Korablew hi I finally order the PCB and got approved I just tweaked a bit more and check many times I hope all goes good I add a chassis GND pad and it has now two R* or one for the FET final adjustment

 

[Korablev]

Korablew hi I finally order the PCB and got approved I just tweaked a bit more and check many times I hope all goes good I add a chassis GND pad and it has now two R* or one for the FET final adjustment

This is great news! I also ordered your boards from the Chinese guys on December 9th. And I ordered the electrical components from a local online store. My planned assembly date will be early March 2025. I will definitely report the results here on the forum.

 

[Juan Vargas]

This is great news! I also ordered your boards from the Chinese guys on December 9th. And I ordered the electrical components from a local online store. My planned assembly date will be early March 2025. I will definitely report the results here on the forum.

excellent I hope all goes well I did spend many hours re-thinking and checking everything hey and good luck on your build, oh I forgot, I order a U87 mic style it was really cheap just to have another project to entertain myself I forgot to mention that

WESTON U87 microphone body DIY microphone body studio microphone handmade mic shell

I chose black color I'm not sure about the quality but is ok the PCB mounting are different but I can still modified the board outline and mounting screws for later good day man

 

[micolas]

I order a U87 mic style it was really cheap just to have another project to entertain myself I forgot to mention that

WESTON U87 microphone body DIY microphone body studio microphone handmade mic shell

I chose black color I'm not sure about the quality

Hi, Juan
I am very curious if it is close to the dimensions of the original U87. I ordered similar bodies before and when I received them they were smaller and different from the seller's description.
Do you know if this model is also sold on AliExpress?

 

[Juan Vargas]

Hi, Juan
I am very curious if it is close to the dimensions of the original U87. I ordered similar bodies before and when I received them they were smaller and different from the seller's description.
Do you know if this model is also sold on AliExpress?

hi first time I order this from Alibaba this I'm not sure if the dimensions are similar to the original probably is not gonna be the same size but I can do measurements and post them here for extra data info here

 

[micolas]

hi first time I order this from Alibaba this I'm not sure if the dimensions are similar to the original probably is not gonna be the same size but I can do measurements and post them here for extra data info here

Thanks man!
For sizes close to the original 87, I still prefer the HL-95 body.

 

[micolas]

HL-95

https://a.aliexpress.com/_EykinBx

 

[Juan Vargas]

HL-95

https://a.aliexpress.com/_EykinBx

awesome thank you for the link

 

[micolas]

awesome thank you for the link

Neumann U87 has a similar headbasket to the Neumann TLM103.
HL-95 next to my 1999 first edition TLM103.

 

[peterc]

https://a.aliexpress.com/_EykinBx

Does anyone else have issues with the link above? It takes me to aliexpress.ru which has totally screwed up my aliexpress links and buying experience.

I am always forced to go to the .ru site and it is a complete cock-up. I have deleted cookies and history many times, but still I get sent to the .ru site but the only way to fix this is to delete my account and re-subscribe.

But when I hit the link to a .ru site, I get caught up in this ridiculous situation again and automatically have to browse the .ru site. What is going on with aliexpress? Crazy

If anyone knows how to fix this please post.

Sorry for the rant. peter

 

[micolas]

https://a.aliexpress.com/_EykinBx

Does anyone else have issues with the link above? It takes me to aliexpress.ru which has totally screwed up my aliexpress links and buying experience.

I am always forced to go to the .ru site and it is a complete cock-up. I have deleted cookies and history many times, but still I get sent to the .ru site but the only way to fix this is to delete my account and re-subscribe.

But when I hit the link to a .ru site, I get caught up in this ridiculous situation again and automatically have to browse the .ru site. What is going on with aliexpress? Crazy

If anyone knows how to fix this please post.

Sorry for the rant. peter

Hi @peterc
It opens normally for me, in aliexpress.com
Have you always been redirected to aliexpress.ru, and some time ago too?

Try the link below:

https://www.aliexpress.com/item/100...04ad40348fa91da72f2cd30dfa4&afSmartRedirect=y

 

[peterc]

Thanks for the reply Micolas
Yes, I am automatically directed to the .ru site.
It seems like once I go there, I have no choice, as the links get hijacked.....
Peter

 

[eso]

https://a.aliexpress.com/_EykinBx

Does anyone else have issues with the link above? It takes me to aliexpress.ru which has totally screwed up my aliexpress links and buying experience.

I am always forced to go to the .ru site and it is a complete cock-up. I have deleted cookies and history many times, but still I get sent to the .ru site but the only way to fix this is to delete my account and re-subscribe.

But when I hit the link to a .ru site, I get caught up in this ridiculous situation again and automatically have to browse the .ru site. What is going on with aliexpress? Crazy

If anyone knows how to fix this please post.

Sorry for the rant. peter

Link does not take me to .ru domain. It takes me to my usual .us domain.

eso

 

[micolas]

Thanks for the reply Micolas
Yes, I am automatically directed to the .ru site.
It seems like once I go there, I have no choice, as the links get hijacked.....
Peter

Try to access the link from another device (desktop, laptop, tablet, smartphone) or through another wifi router and/or from a new account.
It is also useful to clear the history, cache, etc. in the browser, and to use an effective, updated antivirus.
As a last resort ask a friend in the nearby area to access the link. To use another digital ID. If none of the alternatives work, then the problem may be related to the geographical position.
In this situation, I would be very careful with using a bank account to order online products from sites that raise security suspicions.

 

[TimG]

They also have an app they try to direct you to, and somethings are easier in the Ali App. Privacy issues aside.

 

[Juan Vargas]

sorry for the silly question are this the one that can be use for the mic body at bottom?
link = Replacement Mic XLR Plugs 3-pin Connectors Microphone

 

[TimG]

Yes they are. 10 for .99 is worth the 2 week wait!