The Mic

[analag]

It's exciting! You just described the adrenaline effect on the DIY addict!

The best part is that I don't have to do this again. Regular Neumann type circuitry with a bit of feedback from the tertiary winding.

 

[analag]

It's alive!!!!. I had to get to work to figure out the undocumented Chinese BV-12 that thing maxed out my impedance tester that goes up to 200H. I calculate 206H on primary 8.9Hsecondary and 1H on tertiary, give or take a few mH, I also had to figure out the polarity and such. I would love to throw it into a solid state mic. The mic sounds awesome and it not even properly warmed up. All the three mics are seriously nice so far. I have one more to go. Currently waiting on a K47 flat from Arienne and a UTM0547 as part of my original order.

 

[analag]

I hope to not open it any time soon. I had to reach for an old Radio Shack 1uF 250V cap to fit the tight space. Luckily it sounds a great as I remember. To me that is.

 

[analag]

On to the next.

 

[analag]

Lil group shot with a few of the kids. I have quite a bit more in the closet behind me. Some I haven't fired up in years. The TLM style will be the final one.

 

[analag]

The carcass of my first one. She had a great run. I keep her as a reminder of where mic building started for me, back when there was no Albaba and whatnot. One simply broke out the hacksaw and go true DIY...ya dig? Lol! Anyway thanks for this last bit of motivation I got the other day from visiting this forum.

 

[analag]

Moar pics! OK, I predicted that the China large core 6.5:1 was going to knock and it does so I immediately procured another one. I also stated it was dry wound. But I have the sauce for that. Transformer varnish, not to be confused with wood varnish...haha. Anyway this is some non commercial stuff I have been using over the years. Sometimes when I need a transformer with certain requirements I roll my own, be it power or audio.

 

[analag]

Easy pic, the other examples are enclosed and in the racks. 670 inspired thing. Instead of the bunch of power trannys used on the original I wound one with all the secondaries. I kept the entire build symmetrical right down to the wiring. No noise! She is about 18yrs old and still going strong.

 

[analag]

B + 130V, tube 5703w but any of those medium Mu pencil tubes will interchange. Omit V3! The pair of 1.5K on the transformer secondary was used to simulate load, omit as well.

 

[bremusound]

Easy pic, the other examples are enclosed and in the racks. 670 inspired thing. Instead of the bunch of power trannys used on the original I wound one with all the secondaries. I kept the entire build symmetrical right down to the wiring. No noise! She is about 18yrs old and still going strong.
View attachment 144220

What is the purpose of the large pineapple slice?

 

[k brown]

What is the purpose of the large pineapple slice?

Spent so much on mic DIY, he's now on the Dole.

 

[analag]

Here is something I beat together this morning just testing the mic I started this thread with. I'm not a singer so don't judge and I'm freestyling here. No EQ, some compression on the way in. All DIY gear BTW. A very slight touch of delay, no editing of the mic self noise. K47 flat with a 6814 tube and chinese large core BV-8. Flat circuit in all the mics I put together. Nothing here is mixed. Lol, I may delete it later.
View attachment K47 Flat.mp3

 

[KrIVIUM2323]

Some Horace 'Sleepy' Andy's vibe in the tremolo!

 

[analag]

Some Horace 'Sleepy' Andy's vibe in the tremolo!

Haha you caught the accent. Horace is my country man.

 

[analag]

Waiting on my other K47 for this one. I tested it with a spare capsule and it sounds darn good. This is the second implementation of the active loaded tube. Hearing is believing so I will have post some audio to demonstrate the active tube. Wouldn't be nice to challenge the God Almighty EFxx? Bottom pic.
Are my 2 bus animals. Optical comp, FairMonster, 6N30p saturator and the New Behringer pre and diode compressor and let me tell you...they are NO slouch! I insert them as needed.

A

 

[micolas]

Here is something I beat together this morning just testing the mic I started this thread with. I'm not a singer so don't judge and I'm freestyling here. No EQ, some compression on the way in. All DIY gear BTW. A very slight touch of delay, no editing of the mic self noise. K47 flat with a 6814 tube and chinese large core BV-8. Flat circuit in all the mics I put together. Nothing here is mixed. Lol, I may delete it later.
View attachment 145221

Nice vibe!
(I quickly isolated the voice, being very curious... velvety, warm, mellow sound)
View attachment analag k47f 6814 voice.mp3

 

[analag]

Nice vibe!
(I quickly isolated the voice, being very curious... velvety, warm, mellow sound

So far these mics are sonically different. my favorites change everyday.

 

[analag]

Input rack. Optical, FET and Mu compression available. The original Poor Man 660 is alive and well.

 

[analag]

It's a mess in my lab. That in the back is a plate reverb. Need I tell you it sounds awesome. I DIYed the guitars too. I get a kick out of challenging myself.

 

[KrIVIUM2323]

Nice collection of Behringer analogue monosynth!

You diy the plate i imagine. Which kind of material have you choosed for the foil? Stainless steel?
This is impressive amount of diy gear you did Analag.