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OPR

Re: Official 251 point to point on Acrylic build and support thread
« Reply #40 on: May 01, 2016, 05:27:55 PM »
Hey Lemon Elvis Welcome  to the forum.  :D if your after 251 boards you can contact me at openplanrecording@hotmail.com.
Cheers
Mark
It's What's Inside That Matters!

Open Plan Recording

openplanrecording@hotmail.com

http://www.openplanrecording.com/


tonycamp

Re: Official 251 point to point on Acrylic build and support thread
« Reply #41 on: May 05, 2016, 05:26:45 PM »
Hey Nelly,
 I do have a few set left if you interested shoot me an email at openplanrecording@hotmail.com    ;)
There's a great new release dare I say masterpiece album "Animus" by an Australian band Mayfair kytes that exclusively used the 251 clone for main vocal duties check it out!

https://mayfairkytes.bandcamp.com/album/animus


I'd like to hear some samples naked, and out of the context of these folks mixes, they are absurdly bright and sibby to my ears, i like the way you put that mic together, very cool!

OPR

Re: Official 251 point to point on Acrylic build and support thread
« Reply #42 on: May 12, 2016, 09:28:44 PM »
Glad you like the Build Tony!
I think the brightness is a production choice thing particularly on the first track as these mics are as generally smooth as butter:) That particular mic had a Tim Campbell capsule from about 2 or so years ago and was the brightest capsule of the three I owned at the time but still a nice sounding capsule.

 I'm now making my own multi-chambered Ck12 copy which I hope to offer the community at some point.I'll post some solo samples soon.:)
It's What's Inside That Matters!

Open Plan Recording

openplanrecording@hotmail.com

http://www.openplanrecording.com/

micaddict

Re: Official 251 point to point on Acrylic build and support thread
« Reply #43 on: May 13, 2016, 03:26:50 AM »
Quote
I'm now making my own multi-chambered Ck12 copy which I hope to offer the community at some point.I'll post some solo samples soon.:)

... he said on the side ...

OPR

Re: Official 251 point to point on Acrylic build and support thread
« Reply #44 on: May 13, 2016, 08:07:16 AM »
I guess you saw what I did there didn't you Micaddict  ;)
It's What's Inside That Matters!

Open Plan Recording

openplanrecording@hotmail.com

http://www.openplanrecording.com/

Re: Official 251 point to point on Acrylic build and support thread
« Reply #45 on: December 23, 2016, 02:57:01 PM »
I know that not much has been going on here but I really like this build and have made a couple already.  They sound great!  I thought I would share my tube socket holder "invention" since I could not for the life of me find the "original" rubber mount anywhere out there.  I also think it falls apart too quickly.  So I was drinking a glass of Coca-Cola and came up with this idea:


Potato Cakes

Re: Official 251 point to point on Acrylic build and support thread
« Reply #46 on: January 03, 2017, 02:17:48 AM »
Hello,

Where does R10 (100k) go? The 251 schematics I have been looking at have this resistor between C2 (100pF) and the plate voltage, but the layout (very helpful by the way!) does not show R10. Also, is there noticeable sonic benefit to using a 10nF film cap for C3 instead of the electrolytic?

Thanks!

Paul

Potato Cakes

Re: Official 251 point to point on Acrylic build and support thread
« Reply #47 on: January 03, 2017, 02:54:24 AM »
Also, is the 3.3uF cap using in place of the zeners? I just wanted to be sure I was reading that correctly.

Thanks!

Paul

OPR

Re: Official 251 point to point on Acrylic build and support thread
« Reply #48 on: January 03, 2017, 07:53:11 PM »
Hey Potato cakes,
The 3.3uf  runs parallel with the Zeners and R10 is a typo all fixed now!  Sorry for the confussion :o
It's What's Inside That Matters!

Open Plan Recording

openplanrecording@hotmail.com

http://www.openplanrecording.com/

Potato Cakes

Re: Official 251 point to point on Acrylic build and support thread
« Reply #49 on: January 04, 2017, 12:18:08 AM »
Thanks! I scare easily...


Paul


Potato Cakes

Re: Official 251 point to point on Acrylic build and support thread
« Reply #50 on: January 04, 2017, 12:36:34 AM »
Sorry, one more question if I may. I looked through the build photos you so graciously posted, but I didn't see you use zeners with the output cap. Did I miss it? I just want to make sure I have them oriented correctly. The 251E schematic shows them used with the relay polar pattern switching, so I didn't know how that would translate to this version without relays. I hope the answer isn't directly in front of me, making me look sillier than I am.

Thanks!

Paul

OPR

Re: Official 251 point to point on Acrylic build and support thread
« Reply #51 on: January 04, 2017, 12:59:57 AM »
There are no zeners in the mic, This version uses 9 polar patterns like a C12, The zeners are in the stock PSU and the Film cap in parallel is to clean up the negative effects of Zener regulation. ;)
It's What's Inside That Matters!

Open Plan Recording

openplanrecording@hotmail.com

http://www.openplanrecording.com/

Potato Cakes

Re: Official 251 point to point on Acrylic build and support thread
« Reply #52 on: January 04, 2017, 02:22:27 AM »
Copy. I thought that they were located in the PSU, but I wasn't sure.

Thanks again!

Paul