cineli
-
Posts
90 -
Joined
-
Last visited
-
Days Won
5
Content Type
Forums
Gallery
Store
Posts posted by cineli
-
-
The Kelly foam has to have the right fit (egg shape) so it's effectively not so easy to pack it in a small volume. The best is to fill it with anything "soft", like the fur, or even the Piano/Pianissimo itself, but we also found another way: It's possible to "roll" it in a certain way (picture) and keep it in shape with two elastic straps around. Maybe a new way to sell it ?
-
On our side, we can simply make the reference "E-OSIX-AT4053B" and you should be happy with it. We can make the right fit for it (21mm, 127g).
Philippe from Cinela.
-
+18dB/oct @80Hz, analog (NOT digital), as early as possible on the audio chain...is just fine !
-
Great shot !
I cannot resist to show you one of my first attempts in 1997.
I'm sure you'll succeed in that risky way of the "extreme low frequency" isolation.
P.Chenevez
-
Dear users,
a quick word to inform you about our new website (dead since 5 years) !
Not totally updated, with certainly many mistakes...but already filled with plenty of useful informations !
-
Interesting topic !
On my opinion, I can say that if you request a significant isolation as low as 10Hz, I wish you a good luck.
The suspension has to have a resonance as low as very few Hertz...and that concerns all microphones directions, knowing that you may have even more flexibility (unexpected) in other vibration modes. A nightmare for handling.
To be honest, if you limit your wish at (about) 15 Hz, for a stand use, that seems doable.
Anyway, the real challenge is wind protection.
To keep a good acoustic transparency for the lowest frequencies (down to 20 Hz...or lower ?) seems very unrealistic with cardioids (or so) inside a "classic" windshield size (like 20 - 40cm main dimension). Such windshields (our Piano/Pianissimo/Albert ranges, or any other Brand) will definitely filter all low and very low frequencies (pressure chamber effect).
If you were ready to make a DIY "large size" unit (like a tent or so), you could effectively be able to capture the lowest frequencies nicely, and I would be pleased to help you with some advice (structure or covers) !
But that's only my point of view...
P.Chenevez
-
So we made plenty of measurements (transparency and wind efficiency) and here is the simplest picture (wind test) that shows the difference between a KMR81i in Pianissimo or Piano.
Lateral wind. 6 meters per second (common situation).
The graph shows the noise level depending on frequency.
- With the "fabric only", there is not more than 2 or 3dB difference between 80Hz and 300Hz (Piano is better).
- With the fur installed, there is no significant difference between Piano and Pianissimo. Small peaks are only "artefacts" (motor noise).
To appreciate these results, one has to focus between 60 and 500 Hz. Below 60Hz, everything will be filtered in post (or even in location), and above 500Hz, the level is really low.
In conclusion, with the KMR8i, the difference between Piano and Pianissimo is not that much ! It's even equivalent if the fur is installed.
Then, you choose !
-
Very good question !
We'll make a measurement tomorrow (Wind efficiency comparison between KMR81 in Piano and Pianissimo) and we'll display the result here !
-
Headphones and silence, that's all you need to make your own opinion on some units.
Youtube
Facebook
-
Just in case you can contact us ! contact@cinela.fr
We have such a windshield ("Albert" range) for two 4011C
-
Yes, this "rubber thing" is what we call the "bellows". With time and dust, there can be some friction noise between hard parts (lateral screw or main axis) and the flexible material of the bellows. Please use baby powder (talc) on surfaces in contact ! An ear stick is a good tool for that. In any case you have some unexpected noise like this one, feel free to write an email at contact@cinela.fr !
-
Let me confirm the major difference between the C preamp and the B one: No filter at all on the C. The B integrates a hidden 3rd order filter (+18dB/oct) at 50Hz, not talking about the ring one.
Basically, the 4017C is a rumble generator. And if that was not enough, a suspension is a rumble amplifier. To be a little simplistic, I have to say that a bad suspension has its resonance in the audible range...and a good one frankly below 20Hz (with HIGH resonance factor). No problem at all if your recorder/mixer integrates a high slope filter (+18 or +24dB/oct) in the input first stage, but take care to digital filters or too smooth ones (+6 or +12dB/oct). Don't be surprised if the limiter reacts !
As a conclusion, the right tool is NOT simply a good microphone and a good suspension, it's a combination between those...and the right filtering. Tell me if I'm wrong and I'll change my life.
-
Maybe this trick is a line of the famous "Pin 1 problem" defined by the AES. Thank you "rich" for this reminder.
@Ivica, in case it doesn't work, please let me know in PM or directly on this thread. We may have another option...
Philippe@cinela
-
Effectively, by principle, due to external isolators, COSI has a fixed cover.
-
The XS version is not sooo different than the S one. It's only 17 mm shorter.
It has been created to offer the shortest fit to the CMC1, but is also perfect for the 4018C (with the 19mm holder).
The S version may accept a bit more microphones (with proper holders), but if you only have the 4018C, the XS will be perfect !
Never forget that the more "dead air" you'll have in front (and around) the membrane, the more efficiency you'll get !
-
The COSI is totally modular, so we can easily provide a "COSI-XS-19" for the 4018C. We can also make a fabric finish, for indoor use only !
-
For sure COSI cannot compete the larger Pianissimo, but is certainly a winner in its size category. Try it at home !
-
Dear Johnny,
this option has been discussed with Schoeps, years ago. It's mostly a question of acoustic wavelength in front of the clip size. No special worry for our common "audible" frequencies. That technique may not be applied if the clip is too close to the membrane anyway, which is not the case with the MiniCMIT in Pianissimo.
Don't forget that the whole windshield has also an effect on "transparency". This clip will not change the game...
In the other hand, this special clip installation is very helpful for balance and let the use of flexible isolators, which is a key for isolation.
Only my opinion of course...P.Chenevez
-
Dear Tim,
no problem to fix any kind of these things. Please send a mail at contact@cinela.fr
P.Chenevez
-
I like the new member "Jiffy Sound". He looks great !
-
Very nice quizz, very nice clues and very nice pictures ! Team work. Thank you for this story.
-
Let me offer you a second CMC1, including full windshields, if you hear any difference in a blind test !
-
Dear Cinela users,
we really hope you are safe in this hard period !
For those who are in front of the virus during shootings, here is a simple advice for disinfection:
Simplest way: leave your units in quarantine ! two or three days may be enough.
Furs and fabrics: as heat is NOT acceptable (it can damage piles or synthetic fibers), a good solution is simply to wash it with a generous load of soap or washing powder in lukewarm water. The virus is known to "slide" in soapy water, then you hardly rinse the unit after washing ! Don't dry it with a hair dryer, except with a low temperature one. Generally, a full drying night is enough. About fur, you'll also have to brush it gently !
Other elements like suspensions: to clean the unit with alcohol 90° seems to be the simplest solution. All parts will not suffer from "hard" alcohol.
COSI specific case: the whole "wind module" can be washed in soapy (lukewarm) water. Simply unmount it by unscrewing the bue knob. Then rinse. Anyway, you need to help the drying process with a fan, just to be sure that all parts are completely dry ! If you are in a hurry, you can also spray alcohol on piles !
Philippe Chenevez
-
Answer in PM ! Please do not share...
Sennheiser Previews MKH 8030 figure-of-eight RF Condenser Microphone
in Equipment
Posted
For a Fig.8 with single membrane, the perfection of the polar pattern is something natural, whatever is the frequency (except for the highest end). For a cardioid, it requires the manufacturer's knowhow.