Neumann U67 Clone : D-U67 Tube Microphone Build Thread.

[egroys]

Got perhaps another capsule you could install, just for testing? It's making less and less sense every minute...

Would it be crazy to test with an M7 capsule? That way I don't have to butcher my other 67...

 

[egroys]

Ok, tested with an M7 and it works! I'll put the K67 back and hope for the best but if it is in fact a bad capsule, what could've happened?! Is there any way to remedy it?

 

[egroys]

Update: I reached out and Ben said he would replace it. I’m still curious how this might have been intermittent for 2-3 years and then finally kicked the can. Especially since it’s not isolated backplates. Any ideas @soliloqueen?

 

[soliloqueen]

Update: I reached out and Ben said he would replace it. I’m still curious how this might have been intermittent for 2-3 years and then finally kicked the can. Especially since it’s not isolated backplates. Any ideas @soliloqueen?

might be some kind of short considering the rings are metal

 

[happyforreal]

studio 939 has no more bodies in stock. they also did not respond to my messages. Any other ideas for a good housing for this?

 

[JeffKall]

studio 939 has no more bodies in stock. they also did not respond to my messages. Any other ideas for a good housing for this?

I am on the verge of doing a pair of @Matador @chunger 251’s … and emailed ‘Chung about a month ago to check on availability of parts and bodies …

He has been slammed with work … but he assured me even though the 939 site shows certain things as out of stock … he generally can usually accommodate a small order …

And yes you have to wait a bit to get a response … but he has never let me down … and when he can’t fill a part like shock mounts … he always credits back …

Even though we have to wait with certain vendors … like @soliloqueen … they all have great integrity (Ari always responded to my emailed requesting status updates on my order … Ben at Beesneez has always made good on any issue … even when I mistakenly ordered the wrong transformer … and Dany (@poctop) has been more than accommodating and helpful with his sage advice) …

And they are ALWAYS worth the wait (at least for me) !!! In every case … my patience has been a virtue !

Best Regards !!!

 

[eso]

studio 939 has no more bodies in stock. they also did not respond to my messages. Any other ideas for a good housing for this?

I used a pair of these, but it took a bit of work to get everything to fit:

https://www.aliexpress.us/item/3256...t_main.60.aa5e1802BPP7OC&gatewayAdapt=glo2usa

Modifications included grinding out the headbasket openings for the switches, remounting the main body rails to accommodate the PCBs, grinding the edges of the PCBs to clear the main body, and a few other little things.

With the rework I also defeated some of the ground connections in the PCB traces so I added a ground jumper to the switch board.

It was worth the effort, but is time consuming.

 

[happyforreal]

I am on the verge of doing a pair of @Matador @chunger 251’s … and emailed ‘Chung about a month ago to check on availability of parts and bodies …

He has been slammed with work … but he assured me even though the 939 site shows certain things as out of stock … he generally can usually accommodate a small order …

And yes you have to wait a bit to get a response … but he has never let me down … and when he can’t fill a part like shock mounts … he always credits back …

Even though we have to wait with certain vendors … like @soliloqueen … they all have great integrity (Ari always responded to my emailed requesting status updates on my order … Ben at Beesneez has always made good on any issue … even when I mistakenly ordered the wrong transformer … and Dany (@poctop) has been more than accommodating and helpful with his sage advice) …

And they are ALWAYS worth the wait (at least for me) !!! In every case … my patience has been a virtue !

Best Regards !!!

thanks, thats reassuring. do you know the best way to contact Studio 939?

 

[JeffKall]

thanks, thats reassuring. do you know the best way to contact Studio 939?

I use the Contact form on the Studio 939 website …

Hope that helps !

Best Regards,

Jeff

 

[happyforreal]

thanks. yeah i tried that form a month ago...got nothing. i tried again.. hopefully i get some response sometime

 

[JeffKall]

thanks. yeah i tried that form a month ago...got nothing. i tried again.. hopefully i get some response sometime

Sorry to hear … and I wish I had more encouragement to offer … other than to say he has ultimately always responded … and that I have always felt the wait was worthwhile …

I have never waited longer than 6 weeks for a response or a notification of shipment …

Best of luck !

 

[v241]

Does anybody have an advice for me, which and where in the circuit it
makes sense to use higher quality parts like Vishay Dale RN or CMF series
resistors (carbon or metal film in general), polyprop or silver mica capacitors?
Who has tried better parts in a D-M269 or D-U67 or other tube mics.

 

[Khron]

Does anybody have an advice for me, which and where in the circuit it
makes sense to use higher quality parts like Vishay Dale RN or CMF series
resistors (carbon or metal film in general), polyprop or silver mica capacitors?

It totally depends how strongly confirmation bias affects you

 

[JeffKall]

Does anybody have an advice for me, which and where in the circuit it
makes sense to use higher quality parts like Vishay Dale RN or CMF series
resistors (carbon or metal film in general), polyprop or silver mica capacitors?
Who has tried better parts in a D-M269 or D-U67 or other tube mics.

I have built a pair of Dany’s (@poctop) D-U67’s … and found his part selections to be absolutely fine sounding …

But I also agree with @Khron … regarding how much changing parts affects your perception of the sound quality …

IMHO all part options are fairly subjective in nature … and IF you notice a preferred difference by upgrading to higher quality parts (or different response shaping parts) then by all means “season to taste” !!!

Best Regards !!!

 

[Khron]

and found his part selections to be absolutely fine …

Really? Half the part footprints don't even fit

 

[JeffKall]

Really? Half the part footprints don't even fit

Oooops missed a word …
… absolutely fine *sounding* …

Thank you, @Khron

Sorry !!!

 

[happyforreal]

sorry for maybe a dumb question. R9 (Mic) is labeled and in the build folder as 60M ... In The bom are 68M, is that fine?

thanks so much, this is my first mic build, so i don't know how precise those values have to be for Hi-Z parts

 

[rock soderstrom]

R9 (Mic) is labeled and in the build folder as 60M ... In The bom are 68M, is that fine?

From my point of view, it doesn't make almost no difference, take what you have.

 

[v241]

Thank you Khron, JeffKall and happyforreal!