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Gear / Technical Help => Microphones & Setup => Topic started by: jbell on April 27, 2010, 07:50:35 PM
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My wife is making dead rats for my ADK SC-T mics. I have a few questions. Should there be air space between the mic and rats? Is it okay to put the rats over wind screens? Thanks for any advice that can be proviced.
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I didn't DIY mine...I got them from Windcutter.com and they designed them to fit right over my foam windscreens.
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I didn't DIY mine...I got them from Windcutter.com and they designed them to fit right over my foam windscreens.
Thanks for the feed back!
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funny you brought this up.. i am just now trying to make a pair for my c214's for some outdoor shows coming up soon.. good info for me as well as the stock windscreens are a joke.. hope they turn out well.. where did you get your 'faux furr' from?
Neil
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any one have dead rats for their akg 414's? i do see myself needing a set for some summer outdoor fun..
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funny you brought this up.. i am just now trying to make a pair for my c214's for some outdoor shows coming up soon.. good info for me as well as the stock windscreens are a joke.. hope they turn out well.. where did you get your 'faux furr' from?
Neil
Neil I got the fur from Hancock fabrics. I got a quarter yard for a couple dollars. Planning on have my wife make me 2 sets.
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I got some longer samples of fake fur from distinctive fabrics online. they will send free samples of 3 1/2 inch fAux fur. No postage if you sign up for news letter.
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yeah i snagged some samples from another source online but they sent me 2"x3" which wont cut it for my 214's (i will however keep it around to throw over some church mic's that I may purchase when I have some free cash). I need to find it at a local fabric store.. the stuff I got samples for was 'on sale' for 100 bucks a yard.. its damn nice stuff but im broke hahaha (http://www.prefurs.com/Ask-Leena.asp)
Neil
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I always put them right over the foam windscreen. As an engineer I've puzzled and puzzled until my puzzler was sore, and so far I can't see a valid reason why an airgap would be beneficial. There is an airgap between the capsule and the mic housing so the capsule an move... but putting other gaps between the layers doesn't seem like it would slow down the wind. I mean theoretically each boundary layer might have some benefit, but you have a hundred boundaries in the foam windscreens and a hundred more in the dead rat fur, so adding one more won't buy you much in comparison the the hassle of devising this dead air space.
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I made a sets for my 414's, short & long guns that fit over my normal screens. I sewed in an elastic string aound the bottom for a tight fit, think stretch pants ;D For my sd caps I always reach for my shure a81ws screens ;D
FYI: The second picture also shows my old LSD2 with a custon dead rat.
(http://i319.photobucket.com/albums/mm442/tgakidis/2008%2010%2011/IMG_0875.jpg)
(http://i198.photobucket.com/albums/aa186/haddamneck/IMG_0003-1.jpg)
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Well I was thinking about a solution for my Sony C38B's. Any specs on the type of fur? Elastic base sounds good. Would the foam screen be required? Since last time I checked Sony did not offer any windscreens. Well I will need to do something. Any help would be appreciated.
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I made a sets for my 414's, short & long guns that fit over my normal screens. I sewed in an elastic string aound the bottom for a tight fit, think stretch pants ;D For my sd caps I always reach for my shure a81ws screens ;D
(http://i319.photobucket.com/albums/mm442/tgakidis/2008%2010%2011/IMG_0875.jpg)
tgakidis I like the way your AKG Dead Rat screens look on the C414's ! I have a stereo match pair kit of the AKG C414B-XLS mics myself and want to make a pair of Dead Rat screens similar to yours. I have no really good sewing skills really but have sewn up my own pants mends before! :) Do you have any recommendations of what size and shape material I need to get to start this DIY project? The fabric and the elastic band. Any Do's and Don't's recommendations that you might have learned from this? Thank You!
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Neil I got the fur from Hancock fabrics. I got a quarter yard for a couple dollars. Planning on have my wife make me 2 sets.
Was THIS (http://www.hancockfabrics.com/Faux-Fur-18-X30--Cuts-Front-Page_stcVVproductId82451378VVcatId537258VVviewprod.htm) the fabric you bought? Interested in making some rats for my mics as well, but want to start out with the proper fabric. Thanks for the ideas so far in this thread!
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Look similar, but hard to tell from the online pic. I think the fur I got is a bit longer, but I couldn't say for sure. If you can find a store it would be easier to find what you want. Sorry I am not much help.
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No worries, any information in this thread is bound to be helpful. Am I to take it that the longer the fur (within reason), the better it will be at wind-handling capabilities? Thanks.
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I always put them right over the foam windscreen. As an engineer I've puzzled and puzzled until my puzzler was sore, and so far I can't see a valid reason why an airgap would be beneficial. There is an airgap between the capsule and the mic housing so the capsule an move... but putting other gaps between the layers doesn't seem like it would slow down the wind. I mean theoretically each boundary layer might have some benefit, but you have a hundred boundaries in the foam windscreens and a hundred more in the dead rat fur, so adding one more won't buy you much in comparison the the hassle of devising this dead air space.
...not to mention that there's an air gap inside the capsule.
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Thanks for the pics of your 414 rats Ted! I am planning on running to the fabric store this weekend to get some faux fur myself and make me some rats haha.. I wish the place I linked to was a bit cheaper their fur is amazing but shit 100 bucks a yard.. damn..
Neil
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their fur is amazing but shit 100 bucks a yard.. damn..
Hey man...they gotta catch lotsa rats to make a whole yard. :yack:
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hahahaha /me thinks ted should start selling gakratz ;)
Neil
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How are you folks cutting and sewing exactly? I've been wondering about how to sew it so that it won't have a seam over the mics (assuming the seam may affect the sound), but I can't really think of much. Any way someone might be willing and able to draft up a little sketch of your pattern? Especially aimed at people who use DIY rats over A81WS's. Thanks in advance
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How are you folks cutting and sewing exactly? I've been wondering about how to sew it so that it won't have a seam over the mics (assuming the seam may affect the sound), but I can't really think of much. Any way someone might be willing and able to draft up a little sketch of your pattern? Especially aimed at people who use DIY rats over A81WS's. Thanks in advance
My first thought is that I never heard anyone needing rats on top of Big Ass Shure's, but I've never used BAS's so you know better'n'me. Regardless, even the commercially available rats that I use have a seam although there are probably some out there that don't. For example, in my Windtech micmuffs, there is one seam that runs along the length of the inside and another seam at the closed end. There's really no way that a seam isn't gonna be in the path of sound, but since the rats are on the outside of the screens, my thoughts are that the sound hitting the capsules won't be heavily influenced by a seam. Nevertheless, when it comes to recording in windy conditions, the matra is that even though we have to might sacrifice a little bit of sound quality by putting wind protection on, it's better than the alternative.
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I was just planning on cutting mine out like that and folding on the center line then stitching it up with the hair on the inside while stitching then turning it inside out like a sock so the seam is on the inside. is this how you did it ted?
Neil
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I always put them right over the foam windscreen. As an engineer I've puzzled and puzzled until my puzzler was sore, and so far I can't see a valid reason why an airgap would be beneficial. There is an airgap between the capsule and the mic housing so the capsule an move... but putting other gaps between the layers doesn't seem like it would slow down the wind. I mean theoretically each boundary layer might have some benefit, but you have a hundred boundaries in the foam windscreens and a hundred more in the dead rat fur, so adding one more won't buy you much in comparison the the hassle of devising this dead air space.
What wind protection is - is the volume of still air trapped round the microphone - not an "air gap".
A foam windshield works because it traps air in the bubbles in the foam - but the sound is deflected as it goes through the foam and you tend to get some treble loss.
A basket windshield is best as it traps a large volume of air - putting a foam windshield inside a basket reduces its effectiveness as it reduces the volume of still air.
A windjammer works because still air is trapped in the hair and the movement of the hair takes energy from the wind before it gets to the basket/foam underneath.
The hairy fabric used to make windjammers is very special in construction and is not just "off the shelf" stuff. There is a lot of science behind all of this, most of which I had never even thought of until I talked to an expert who designs such things. But I'm certainly not going to talk about trade secrets on a public forum.
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I always put them right over the foam windscreen. As an engineer I've puzzled and puzzled until my puzzler was sore, and so far I can't see a valid reason why an airgap would be beneficial.
It depends on the kind of microphone whether or not an airgap around the capsule will make sense. Pressure transducers are fine with just some foam and maybe a fur on the outside but no air gap.
With pressure gradient transducers (directional mics), an enclosed volume of air around the capsule helps to correlate the low-frequency components of the wind noise so that they'll cancel out.
Most LDCs have enough free space inside their grilles to achieve this with just a combination of foam and fur. With SDCs, this is not the case and you'll want to create some air volume around the capsule, i.e. between the capsule and any kind of wind-abating device, not between foam and fur. Neumann make foams with some kind of coarser foam on the inside, but they tend to make rustling noises which are loud enough to become audible when you're recording very faint sounds, e.g. in nature recordings.
So, the only solution I've found are those baskets* made by Schoeps. Unfortunately, they're almost as expensive as my Rode NT5s.
Ralf
*) http://www.schoeps.de/en/products/categories/bascet_screen
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So, the only solution I've found are those baskets* made by Schoeps. Unfortunately, they're almost as expensive as my Rode NT5s.
*) http://www.schoeps.de/en/products/categories/bascet_screen
You will probably find the Rycote version just as effective and cheaper ;)
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I got mine at hobby lobby. But I had to get 1/2" fake fur because that's the longest they had. I cut a long string fold it in half and stitch it up like a sock. Invert it so the fur is on the outside. To increase the gap and because the fur is so short, I've had to do 3 layers using this method. But it's very windy here during a fair portion of the year. Mine are shotgun style mics so I keep the seems on top or beneath. I figure that there's no desired sounds coming from those directions in the first place. I always keep the foams as a base, at a minimum it keeps the fur which will likely shed a bit from getting on the important parts of the mic. I use velcro cord ties (for computer cables) to cinch up the back end. And to wrap around the mic clip so they don't inadvertently slide off.
Ideally I'd like a basket style rig. If it rains, it keeps wet cloth that much further from your mic. And the sound source of the pitter patter of rain further away to dampen it's balance in the mix. Which is my main motivation for DIY fake fur as once they've been spoiled, they're mostly disposable. I bought a full yard for $20-ish and only used about 1/4th of it. If I ever get around to the basket / shockmount DIY version I'll need most of the rest, if not more. Plus it's a stylish leopard print.
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I wonder if a toupe could be made out of this material and you could mount mini mikes in it. Might work better than a hat for steathing... Couldn't look any worse than Bob Costas'
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I wonder if a toupe could be made out of this material and you could mount mini mikes in it. Might work better than a hat for steathing... Couldn't look any worse than Bob Costas'
I've seen a guy who did nature recording stuff put a couple of velcro flaps of fake fur on the shoulders of his jacket to cover his mics. I prefer having my mics a bit higher. The difference between chest high and 1' above the heads of the audience is pretty huge for quality of sound. But I'm pretty average height.