AKG Perception P220 to Neumann u87 5 min mod ( p200, p100, p400, p420? )

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Please tell me the internal frame is not plastic ... James

The rails are plastic but they're thick and seem sturdy, and they don't flex. The end part is metal, and the shell is thick metal, and when you screw it together it feels very solid. (The rails are in a bit of tension holding the end cap in place, but once it's there, there's metal to metal contact between the end cap and bottom shell, screwed together, and between the bottom & top part, in contact, and it feels very solid. ("Like a tank" as somebody upthread said.)
 
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Hello - thanks to kingkorg and everyone else who contributed to this thread!

I just bought a perfect used AKG p420 for $50 specifically to do this excellent mod. Based on what I read on the previous pages and not having any appropriate spare capacitors on hand, I decided to order three surface mount capacitors from digikey, 470pf to solder in, in parallel -- (I referenced the link a few pages back (p16 by @ccaudle -- I ordered three because shipping was an order of magnitude greater than the cost of the capacitors and I felt it couldn't hurt to have a couple of spares or can give to a friend who may want to try the mod).

So my question: literally all the videos and pictures I've seen of this mod have all been through-hole capacitors and not surface mount. I've never dealt with surface mount. In the package, the ones I ordered look nothing like the surface mounts already on the board or others I have seen. They don't even look like the picture on digikey (I'll attach). It's just a piece of plastic with a bit of metal on the underside. Unless the plastic is basically a container for the capacitor which has to be removed from it to then work with, I'm not sure what's going on here -- I suspect something along these lines, but I'm not sure. They are very tiny.
I will post a screenshot of the caps I ordered which has a photo of what they're supposed to look like (but don't appear to look like at all...).

Please forgive me as I am a novice to this. Thank you.

Screenshot 2025-01-04 at 1.40.20 PM.png
 
Hello - thanks to kingkorg and everyone else who contributed to this thread!

I just bought a perfect used AKG p420 for $50 specifically to do this excellent mod. Based on what I read on the previous pages and not having any appropriate spare capacitors on hand, I decided to order three surface mount capacitors from digikey, 470pf to solder in, in parallel -- (I referenced the link a few pages back (p16 by @ccaudle -- I ordered three because shipping was an order of magnitude greater than the cost of the capacitors and I felt it couldn't hurt to have a couple of spares or can give to a friend who may want to try the mod).

So my question: literally all the videos and pictures I've seen of this mod have all been through-hole capacitors and not surface mount. I've never dealt with surface mount. In the package, the ones I ordered look nothing like the surface mounts already on the board or others I have seen. They don't even look like the picture on digikey (I'll attach). It's just a piece of plastic with a bit of metal on the underside. Unless the plastic is basically a container for the capacitor which has to be removed from it to then work with, I'm not sure what's going on here -- I suspect something along these lines, but I'm not sure. They are very tiny.
I will post a screenshot of the caps I ordered which has a photo of what they're supposed to look like (but don't appear to look like at all...).

Please forgive me as I am a novice to this. Thank you.

View attachment 142713
@Slanted_and_Enchanted

It does not matter if the capacitor in the NFB circuit is smd or through-hole, single or composed of several capacitors.
The important thing about
@kingkorg 's mod is the value (chosen to everyone's preference)
Simply place one of the 3 capacitors from the picture, on top of the stock smd capacitor on the PCB and solder their armatures (metal ends)
That's all.
Good luck!
 
They don't even look like the picture on digikey (I'll attach). It's just a piece of plastic with a bit of metal on the underside. Unless the plastic is basically a container for the capacitor which has to be removed from it to then work with, I'm not sure what's going on here -- I suspect something along these lines, but I'm not sure. They are very tiny.

Can you attach a photo with what you mean?

Surface-mount components do indeed come as standard "taped" (and on reels, but that's only for 1000pcs and up).

https://shop.tvsat.com.pl/environme...oductGfx_100354/ECJ2FF1E225Z_KCSU002.205P.jpg

Either way, you WILL want at least a pair of thin-tip tweezers for surface-mount passives...
 
I just bought a perfect used AKG p420 for $50 specifically to do this excellent mod.

So my question: ...

Sidebar Comment - Good Day Mr. @Slanted_and_Enchanted . I giggled quietly reading your post as it reminds me of the number of people who sign contracts before engaging a lawyer to review and comment on the agreement! Sort of a cart before the horse or closing the barn door after the horse escapes, scenario. :)

Serving suggestion - You might consider asking about the various types of component form before ordering and spending your hard earned brass, as it might have altered your purchase decision.

I DO NOT intend to sound critical or snarky - really I don't - I merely suggest there is a world of real world practical experience available from members of this group, and asking questions before shooting might have suggested a different course, especially considering the variety of packages these components have. Purchasing one form before asking, essentially presents a "fait accompli," precluding an informative discussion of the relative merits of each package form type - a really good question! Again, I do not mean to be snarky - merely suggesting unsolicited practical advice from the sidelines. :) JHR
 
They don't even look like the picture on digikey
Every SMT ceramic cap I have dealt with looks just like those pictures you attached.
I think you will have to find a way to take a picture of the devices you have to understand what you mean, but as Khron implied perhaps you have confused the packaging for the part.
 
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