Le Roux

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #220 on: July 02, 2018, 04:10:42 PM »
In for 2 for the next run! 😉


thekim1

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #221 on: July 08, 2018, 11:19:32 AM »
I'm in for a pair if there will be another run

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #222 on: July 08, 2018, 02:44:03 PM »
I would be in for 2 if there is another run!

Potato Cakes

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #223 on: July 10, 2018, 12:52:23 AM »
Just finished building four (4) of these. Worked great the first time. They still need to be biased, but I was getting plenty of headroom without making any adjustments. Also, these are extremely quiet. I've haven't recorded anything thing with them just talked into each mic and snapped my fingers, but my reaction was that this circuit is indeed very smooth and pleasant in the high mids, unlike most any other name brand commercial SDC that are considered audio engineering essentials.

Couple of tips to make the build easier:

Use a small flat file instead of a razor when test fitting the white spring housing that connects the capsule to the PCB. I found it much easier and faster (and safer) to get a great fit to the PCB without the risk over trimming.

Trimming the small brass rod that makes contact with the capsule so that it is flush with the microphone body threads will be just enough material so you can fully screw the capsule on the body.

A small amount of gentle persuasion will be required to insert the XLR housing into the body when the PCB is attached. The XLR housing does not line up exactly with the body once to get to this point of assembly as the PCB is not perfectly centered to the XLR when soldered in place. At least that is they way it was for me. It didn't take much effort but one should be aware this may be the case upon completion.

Now I just need to get the bodies painted.

Thanks for the excellent project!

Paul
« Last Edit: July 10, 2018, 10:35:11 PM by Potato Cakes »

Potato Cakes

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #224 on: July 10, 2018, 12:56:42 AM »
The back.

This where I placed the 470pF capacitors between the isolated turrets. The leads where small enough to pass through their hollow centers to be soldered on top.

I cleaned the solder connections and the 1Gohm resistors after this photo was taken.

Thanks!

Paul
« Last Edit: July 10, 2018, 10:37:28 PM by Potato Cakes »

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #225 on: July 10, 2018, 10:25:08 PM »
Great work – thanks for pics !!!

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #226 on: July 13, 2018, 09:22:35 AM »
Transformers are here – remaining orders being packed!

GraemeWoller

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #227 on: July 14, 2018, 06:09:15 AM »
Lovely work Mr. Cakes! Looks great!!

I was just about to butt in and suggest you might need a little isopropyl on there, but then you bet me to it! :)

I cleaned the solder connections and the 1Gohm resistors after this photo was taken.

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #228 on: July 15, 2018, 05:26:55 AM »
In for two kits in the next run!  :)

Potato Cakes

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #229 on: July 15, 2018, 09:07:20 AM »
Lovely work Mr. Cakes! Looks great!!

I was just about to butt in and suggest you might need a little isopropyl on there, but then you bet me to it! :)

The one thing I will do I is put a little hot glue to hold the transformer in place to the PCB. it's not completely necessary when it's all assembled, but it think a little more stability would be nice.

Hopefully later this year when I get back to recording stuff I'll get to put them to use.

Thanks!

Paul


Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #230 on: July 16, 2018, 10:29:16 PM »
Bummed I missed this. Would be in should there be another run.

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #231 on: Today at 03:16:58 AM »
I'm in for 2 as well  ;)