Removing inner mesh: Actual difference or placebo?

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As in M49 / U67?
well, it's wrong to say it won't do anything, but if they paid attention, it's part of the response to the microphone or the basket has no serious standing wave issue in the first place, so messing with it may negatively alter the sound profile or do nothing. it's only in mics that have wire that's too thick, and with a high-mass inner weave, that removing the inner layer will result in a less pronounced standing wave.
 
As an aside - have you ever taken an AKG Blue Line capsule apart? There's mesh in front of the diaphragm that's so fine and dense, that it lets no light through. How can that work? The one I disassembled was an omni (CK92); I don't know if the other capsules are different.
 
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As an aside - have you ever taken an AKG Blue Line capsule apart? There's mesh in front of the diaphragm that's so fine and dense, that it lets no light through. How can that work? The one I disassembled was an omni; I don't know if the other capsules are different.
i haven't. i'd love to see pictures of what you're talking about
 
I didn't take any pics (it was many years ago); but I literally couldn't believe my eyes.

Unfortunately, the service doc doesn't show this part - it's inside the grille head. I had hacksawed it apart, as I couldn't see any light coming through the grille head and my curiosity got the best of me.
 

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How close to the diaphragm? - don't remember, was around 1993.

I seem to recall it was near the bottom of the thick body grille slots.
 
i haven't. i'd love to see pictures of what you're talking about
Same with AKG CK62 capsules (for C460B/C480B) There‘s two versions, ULS (near field) and DF (diffuse field, discontinued long ago), only difference was the mesh. The ULS has a really dense ‚disc‘ in front, i should have one or two after converting a pair to DF. Will look after and take pictures

AKG service manual
Data sheet
 
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All I can say is that this dirty, natty-looking thing was that last barrier between my $30 used guitar center find and sonic excellence.

This is from an early 2000's Groove Tubes mic. Meaning the guy who invented the Vipre ... approved this???

Polish_20230220_224715427.jpg

My theory (which is based on nothing actually scientific): Dirt, grime, rust and uneven surface (it was coming off) affect sound waves in a negative way. And I'm digging my heals in on this one. There was something nasty going on. The mesh was coming off.

The other sonic hindrance being the resonator disk. The removal of which proved to be too delicate of an operation. Unsoldering the front wire released a fury of built-up tension that spared nothing in it's path. Again, same guy who gave us the Vipre. Boggles the senses.

20230218_220254_2.jpg

But who needs an ugly capsule? Capsule aesthetics suddenly become more important after mesh is removed, so it needed to go anyway.

Talk about a psychological upgrade:


20230219_001513.jpg

Nothing like shiny brass for a good placebo affect. Which brings us to our last and final upgrade. The 4 khz peak of our lovely u47-inspired capsule (straight from the Republic of China) :

fixed1.png

This is just a rant at this point, but of all places for a presence peak. After the above-pictured adjustment, my modifications were complete, and Aspen Pittman's legacy fully-restored.

Who actually does an EQ sweep, stops at 4 khz and says "Perfect" ???

fixed2.png

End of rant.
 
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Nothing like shiny brass for a good placebo affect. Which brings us to our last and final upgrade. The 4 khz peak of our lovely u47-inspired capsule (straight from the Republic of China) :

View attachment 105244

This is just a rant at this point, but of all places for a presence peak. After the above-pictured adjustment, my modifications were complete, and Aspen Pittman's legacy fully-restored.

Who actually does an EQ sweep, stops at 4 khz and says "Perfect" ???

View attachment 105245

End of rant.
the real k47 has a presence peak here too. even first party k47s are up at least 2dB at 4k. The highest I've seen on a brand-new all-original capsule was 5dB. It sounded like it had a telephone effect on it. This is just how the capsule sounds.
 
"Fury of built-up tension"? Is that solder on the diaphragm?

GT55-pcb.jpg

That's actually how the wire connects, weirdly enough.

The wire was awkwardly positioned, creating some tension. After it was freed, my tweasers weren't gripped firm enough to hold it, so the end of the wire landed on the good part of the diaphragm, tearing through it. :cry: Not like I was actually going to use the capsule for anything, but still.
 
View attachment 105258

That's actually how the wire connects, weirdly enough.

The wire was awkwardly positioned, creating some tension. After it was freed, my tweasers weren't gripped firm enough to hold it, so the end of the wire landed on the good part of the diaphragm, tearing through it. :cry: Not like I was actually going to use the capsule for anything, but still.

Oh, dang :eek: :cry:

Note to self - cut the wire first, next time(?)...
 
the real k47 has a presence peak here too. even first party k47s are up at least 2dB at 4k. The highest I've seen on a brand-new all-original capsule was 5dB. It sounded like it had a telephone effect on it. This is just how the capsule sounds.

It is. The one on mine just seems a little too narrow, but I dig the midrange honk. Kind of an idie rock vibe.
 
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