You have to understand that the level of ringing depends on the stimulus level, so the ratio is more or less constant. Actually, the ringing may be more perceptible with soft acoustic sources.
Silicone sealant is a very efficient damping material.
New u87 Body
- Thread starter kingkorg
- Start date
Help Support GroupDIY Audio Forum:
Silicone sealant is a very efficient damping material.
Right now, for me, I'm thinking that the wrap around shock mount does enough to mitigate the problem to where software like Soothe or M-Clarity can clean up enough of whatever resonance may remain to work for my needs.
But I do think I have some silicone sealant somewhere in the garage. Perhaps I'll try a couple of dabs where the rail and capsule deck meet if inspiration strikes.
But I do think I have some silicone sealant somewhere in the garage. Perhaps I'll try a couple of dabs where the rail and capsule deck meet if inspiration strikes.
TwentyTrees
Well-known member
I seem to remember something about some sealants potentially giving off mildly corrosive fumes - worth checking, and maybe keeping away from the capsule while it cures.
The Isodamp material mentioned above sounds promising too. I received a couple of these bodies recently - one thunks like a bell in particular, so I'll be using some of these strategies for sure. I'll be using them to rehouse two Oktava MK219s with cracked bodies, so will probably need to make a new capsule deck. Perspex sounds like a good idea, thanks @MagnetoSound.
The Isodamp material mentioned above sounds promising too. I received a couple of these bodies recently - one thunks like a bell in particular, so I'll be using some of these strategies for sure. I'll be using them to rehouse two Oktava MK219s with cracked bodies, so will probably need to make a new capsule deck. Perspex sounds like a good idea, thanks @MagnetoSound.
Yes, the "acetic" type (which smells like vinegar) can be potentially disastrous, but it not very common today. Actually you have to look specifically for the acetic type.
Most common is the neutral.
https://www.linkedin.com/pulse/what-difference-between-acetic-silicone-sealant-neutral-adhesive
Morning to all,
I was tempted to press the buy button on these...
Then I looked at dimensions at the bottom of the page.
It says : "PCB diameter 34mm. - height 240mm" !?!
Ok for PCB, not huge but ok...
A real U87 has a Height of 208mm (if you include XLR conn.)
A diameter of 54mm at top of the tube
and a grill (flat top) of 56mm
Can ANY of you share the real outside dimensions of this U87 body?
I'm slightly confused with what their site says...
Thanks in advance
M
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thomasdf
Well-known member
Your head basket looks much better and legit than the one on the website… which kind of makes me hesitate
Can you confirm that the mic is better looking IRL ?
Thanks
Yes, i've been hesitating to order of that same reason. Mic bodies are kinda difficult to photograph due to lens distortion. I hope that is the issue, not something else.Your head basket looks much better and legit than the one on the website… which kind of makes me hesitate
Can you confirm that the mic is better looking IRL ?
Thanks
I second that!Your head basket looks much better and legit than the one on the website… which kind of makes me hesitate
Can you confirm that the mic is better looking IRL ?
Thanks
And maybe post on Length/height cm's pleeease ?
I've been holding my finger on the "buy button" for about 27 hours now...
A new record for me.
M
The height is about 21cm with xlr connector, width of the headgrille top is 55mm. Some pictures against the cheapo u87 variant.I second that!
And maybe post on Length/height cm's pleeease ?
I've been holding my finger on the "buy button" for about 27 hours now...
A new record for me.
M
Attachments
thomasdf
Well-known member
Thanks for the info ! I am curious to know if I can make a U67 clone out of it...
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thomasdf
Well-known member
"Sorry, the seller has not provided the EPR (extended producer responsibility) registration number of the destination country. Your online order cannot be processed."
Apparently they can't ship to France... great
Apparently they can't ship to France... great
GeorgeToledo
Well-known member
- Joined
- Mar 3, 2015
- Messages
- 430
E6000 would be a good alternative to hot glue or silicone.
thomasdf
Well-known member
Just pulled the trigger on a pair ... wait and see ! They offered me direct Paypal invoicing, I guess I still can benefit from buyer protection if anything goes wrong.
Barry Hufker
Well-known member
George, what is E6000?
Barry Hufker
Well-known member
Wow Khron, what an education I'm getting from you! E6000 Craft Adhesive. So many terms and ideas are presented on this forum it is hard to keep up with them all. I appreciate your time and trouble!
Wait a minute !!!
I thought you said they would not ship to France ?
I’m in Vincennes 94 !
How did you do it then ?
You beat me to it ?!?
M
thomasdf
Well-known member
Montreuil, 93
They offered to invoice me directly on PayPal, which means the sale is outside Alibaba.
If I knew we could have saved on shipping, maybe it’s not too late. DM moi si tu veux !
Cheers
They offered to invoice me directly on PayPal, which means the sale is outside Alibaba.
If I knew we could have saved on shipping, maybe it’s not too late. DM moi si tu veux !
Cheers
Aaaaahhhh!Montreuil, 93
They offered to invoice me directly on PayPal, which means the sale is outside Alibaba.
If I knew we could have saved on shipping, maybe it’s not too late. DM moi si tu veux !
Cheers
I go to Montreuil all the Time.
Nice, Funky and better prices too.
So we are neighbours!
Ok i PM you immédiatement !
M
Hello guys, I've just received my body today and immediately put in the fuchs87ai circuit with AAK87 capsule, which I had previously in the more commonly used 3/4 u87 shaped body.
After swap, I noticed a pleasent improvement in the high range and I felt the mic sounds.. I'd say more correct to my ear. Which is probably due to the bigger headbasket.
To see the difference I've made a quick test using the other u87 I have (same capsule and circuit but 3/4 u87 body). Keeping both mics in my hands and recording me speaking (I don't have monitors right now otherwise I'd have used pink noise). After that I applied matching eq and noticed interesting shapes between 5k and 10k I want to share.
On to the resonance.. yeah this body is a real bell! Anyway here is what I've tried, and I think it made a subtle improvement, especially for the handling noise. I had m2.5 screws and grommets which I used for building OPA mics.. the photo explain better how I've used them. Oh I also cut some of the packaging to try around the capsule deck but I think it doesn't do much.
Anyway I think the improvement in sound makes the noise from body resonance negligible but I have test it in real acoustics (this friday!)
BTW I bought another one
After swap, I noticed a pleasent improvement in the high range and I felt the mic sounds.. I'd say more correct to my ear. Which is probably due to the bigger headbasket.
To see the difference I've made a quick test using the other u87 I have (same capsule and circuit but 3/4 u87 body). Keeping both mics in my hands and recording me speaking (I don't have monitors right now otherwise I'd have used pink noise). After that I applied matching eq and noticed interesting shapes between 5k and 10k I want to share.
On to the resonance.. yeah this body is a real bell! Anyway here is what I've tried, and I think it made a subtle improvement, especially for the handling noise. I had m2.5 screws and grommets which I used for building OPA mics.. the photo explain better how I've used them. Oh I also cut some of the packaging to try around the capsule deck but I think it doesn't do much.
Anyway I think the improvement in sound makes the noise from body resonance negligible but I have test it in real acoustics (this friday!)
BTW I bought another one
