Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #200 on: June 14, 2018, 03:09:27 AM »
I'm also in for 2 kits of any second run that happens. Let me know! My luck is I'll next check this thread when the second run's spoken for and done.


HarmonyUnited

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #201 on: June 17, 2018, 12:51:57 PM »
Im in for two kits too! :)

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #202 on: June 19, 2018, 04:51:36 AM »
i'll be in for two kits also for the next batch

12afael

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #203 on: June 19, 2018, 04:57:08 AM »
i´m also interested
heavy metal is the law!!!

stelin

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #204 on: June 19, 2018, 04:55:22 PM »
I'll also be in for two kits also for the next batch!

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #205 on: June 21, 2018, 11:57:27 AM »
Any word on when orders will ship for those of us that have already paid?

JuanV

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #206 on: June 21, 2018, 12:11:04 PM »
I'm in for two kits. Let me know, Thx.

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #207 on: June 22, 2018, 08:35:54 AM »
Any word on when orders will ship for those of us that have already paid?

All orders without transformers were shipped a long time ago.

For orders with transformers, we can only move forward once everyone has paid.

iturnknobs

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #208 on: June 25, 2018, 04:18:35 PM »
...not looking for names, just numbers. How many haven't paid, and can others purchase their trafos to move this along? I'm sure they could be sold later. Looks like there's plenty of interest for another round. I'm just sorta anxious to get to this build.

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #209 on: June 25, 2018, 04:31:11 PM »
...not looking for names, just numbers. How many haven't paid, and can others purchase their trafos to move this along? I'm sure they could be sold later. Looks like there's plenty of interest for another round. I'm just sorta anxious to get to this build.

It looks like we are mostly waiting on one person who ordered 15 transformers and hasnt paid. I am anxious as well and wondering the same thing.


Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #210 on: June 26, 2018, 09:12:51 AM »
All payments are in! ;)

Transformers on the way.

yosh

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #211 on: June 26, 2018, 12:32:36 PM »
I'm in for two if a second run happens! Thanks!
My Portland, Oregon based recording studio: www.themaproomstudio.com

craigmorris74

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #212 on: June 27, 2018, 02:00:01 PM »
I'd be in for one kit of a second run.
Craig

Potato Cakes

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #213 on: June 28, 2018, 04:34:03 AM »
Is there a quick and dirty way to set the bias? If someone could share what they are getting where R3 connects to T1 (2N3819).

I thought I was going to be able to finish one of these up tonight until I realized I didn't have the 470pF capacitors. I do have 330pF, but I've made all the effort getting everything else I might as well use what is specified on the BOM. Plus I already have to order more parts for another project. Looking forward getting these done!

Thanks!

Paul

TillM

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #214 on: June 28, 2018, 09:23:50 AM »
Is there a quick and dirty way to set the bias? If someone could share what they are getting where R3 connects to T1 (2N3819).

I thought I was going to be able to finish one of these up tonight until I realized I didn't have the 470pF capacitors. I do have 330pF, but I've made all the effort getting everything else I might as well use what is specified on the BOM. Plus I already have to order more parts for another project. Looking forward getting these done!

Thanks!

Paul
I thought biasing was easy, but I ended up with two broken 2N3819.
I dont install the capsule and the spring and gave the mic the 48v from the xlr input.
Then I put a 1khz sinus though the 1Gohm resistor.
My oscilloscope I place on the JFET. Usually the same method like on the U87 build from Poctop.
But I ended up two times, with as I said, a broken JFET.

RuudNL

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #215 on: June 30, 2018, 12:09:48 PM »
If you power up the microphone first and then connect something to the input, the gate of the FET will get a pulse of -46 V.
(The charge in C1) The FET may not like this!
There is a solution for every problem!

http://www.vansteenisaudio.nl

TillM

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #216 on: June 30, 2018, 01:10:14 PM »
If you power up the microphone first and then connect something to the input, the gate of the FET will get a pulse of -46 V.
(The charge in C1) The FET may not like this!

Hell no I,m so dumb !
Thanks Ruud for explaining it again.
With my u87 builds I first connect everything and then power it up.
Don’t know why I don’t do it with the KM84.

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #217 on: July 01, 2018, 11:43:37 AM »
interested in 2 kits if there's another batch ;)

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #218 on: July 01, 2018, 03:56:00 PM »
also interested in 2 kit if there's a next batch  ;D

iturnknobs

Re: Neumann KM84 DIY Body & PCB kit – CLOSED
« Reply #219 on: July 02, 2018, 09:06:42 AM »
I haven't received my stuff yet, but should we start a build thread? I wonder if it might be difficult to look
for pertinent info in between all the "I'll take 2 on the next run" posts. Hats off to Banzai.