Re: Nady TCM 1050 mods
« Reply #20 on: April 24, 2019, 06:20:53 PM »
Nope, not at all.


Re: Nady TCM 1050 mods
« Reply #21 on: April 24, 2019, 11:50:43 PM »
The tube arrived today, just ordered the K47 capsule. The other mods seem easy enough since it's just removing or replacing capacitors.

Re: Nady TCM 1050 mods
« Reply #22 on: May 07, 2019, 05:13:45 PM »
Got my K47 capsule in the mail today. Is there a recommended socket I can add to the circuit, or should any 9 pin socket that fits work?

Re: Nady TCM 1050 mods
« Reply #23 on: May 07, 2019, 07:12:41 PM »
I cant say for sure, but you need to make sure you have enough room for the tube after installing the socket.  So it doesnt hit the transformer at the bottom. If your tube is soldered to the pcb, which i reckon, you really need to plan well how to remove it. It is soldered on both sides of the pcb, and almost impossible to remove without damaging either tube, or PCB. I used combination of air gun, pump, vacuum cleaner with  extension, soldering gun and barely made it.

Or you can just break the tube (CAREFULLY) and take out pin, by pin . I never liked that idea.

Khron

Re: Nady TCM 1050 mods
« Reply #24 on: May 07, 2019, 07:21:36 PM »
When desoldering "factory" stuff, whenever possible, it's probably a good idea to remove as much of the stock solder (lead-free, high melting point) as possible, within reason, and adding in some leaded solder (lower melting point, and to aid with thermal transfer to both sides of the board).

With a 9-pin device like a tube, i'd blob on a healthy dose of leaded solder and blast the solder-side with a hot-air station (or in a pinch, a hot-air gun / paint-stripper).
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

Re: Nady TCM 1050 mods
« Reply #25 on: May 08, 2019, 01:54:55 AM »
Will I also need to replace the diodes in the PSU? This is the only part I'm actually worried about doing.

Khron

Re: Nady TCM 1050 mods
« Reply #26 on: May 08, 2019, 06:52:06 AM »
Any particular reason? Both for replacing them, and for worrying about it.
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

Re: Nady TCM 1050 mods
« Reply #27 on: May 08, 2019, 01:07:49 PM »
Any particular reason? Both for replacing them, and for worrying about it.
It's more the warnings about the voltage the PSU uses being potentially lethal that worry me, because I'm not too experienced with DIY electronics work. I'm sure just replacing the diodes is simple enough though (I'm pretty sure those warnings are about wiring the whole thing and more about the wiring the entire PSU though).

As for the reason to replace them, that's just what Advanced Audio and Fox Audio Research recommend, so you get the 60v or so the capsules are designed for, rather than the 70v the stock PSU puts out. Is an extra 10v enough the cause any real problems for the capsule?

Khron

Re: Nady TCM 1050 mods
« Reply #28 on: May 08, 2019, 01:17:46 PM »
https://groupdiy.com/index.php?topic=65159.0

And regarding PSU voltages being on the "interesting" side of things... I trust you're not planning on doing any soldering / modding with the thing plugged in and powered on, are you? ;)
Khron's Cave - Electronics - Audio - Teardowns - Mods - Repairs - Projects - Music - Rants - Shenanigans

tchgtr

Re: Nady TCM 1050 mods
« Reply #29 on: June 01, 2019, 02:27:02 AM »
So the stock transformer doesn't roll off too much high end for a K47 capsule?

I have a 1050 in which I installed a 47-type capsule bought from a group buy here many years ago. I love it. Very lovely, dark mic with great clean high end. Really nice for percussion and bright voices. Didn't do too much to the circuit other than upgrade caps and some of the Fox mods. I think I put a 12AT7 in it. Probably a JJ.
To my ear, the original circuits sound much better with a C12 copy than the original capsule. 
If you want open and brighter(tho not as bright as a C12 mic)...C12 copy. Dark and rich...47.
I have another with the original capsule and some simple mods. I hate those 67 copies, but I'm trying to make it work.
Resistance is not futile. It is voltage divided by current.  (thanks, Bill)


 

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