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 on: Yesterday at 10:34:37 am 
Started by Mishro - Last post by Mishro
Hi Klaus,

I have been doing some research. 

So I guess I should clarify that after some heavy listening this mic indeed sounds good on my voice.  The upper midsized are a bit prominent but I think it is preferable for my voice.  However, there is a little nasality and the sibilance I can remove with the de-esser on my SPL Channel One.

There is a little bit of nasality (slight , not overwhelming) that I am wondering if it can be removed main mods to the mic. I guess that congestion is what is bugging me most.

Thank you in advance for your reply.

 on: March 12, 2019, 02:10:29 am 
Started by klaus - Last post by klaus
I received this as an email, but, while the sender did not wish to post in a forum, he gave me permission to do so:

I have configured a Blumlein array with four KM84 mics.
As you can imagine, a figure 8 can be created with 2 cardioid mics with their axis oriented at 180 degrees to one another, their diaphragms aligned on the same plane, stacked one above the other, and the phase of the rearward facing mic flipped 180 degrees from the forward facing mic. Two such figure 8 pairs of KM84 mics are oriented 90 degrees from each other with the flipped phase facing rearward on both figure 8 pairs.

I would be grateful for your comments, and kindly correct my understanding of this mic arrangement where I may be mistaken:

1. I found that there is no audible effect due to shadowing as a result of stacking the mics participating in each figure 8 arrangement vertically, and oriented 180 degrees to each other, as one might believe would occur. Double blind listening trials of stacked and non stacked mic positions are not distinguishable.

2. The major advantages of this Blumlein array, as compared to a Blumlein array created from two figure 8 mics, is the choice of mics participating in the Blumlein array now includes stock cardioid mics, and control of volume and pan of each of the four lobes of the Blumlein sound field.
The trade-off when gain is unbalanced in the figure 8 members is a reduction of the null in the figure 8 component proportional to the gain delta in each figure 8 component. This trade-off results in a more omni sound field as the affected lobes become more cardioid as the gain delta increases within each figure figure 8 component.

3. If the phase of the rearward and forward facing mics are configured to be 0 degrees from each other (all four mics in phase with each other), then one is left with two pairs of XY coincident arrays, each array facing 180 degrees from one another. The in-phase sound field of each array is wider to capture a wider angle of sound in-phase at the expense of rejecting more sound from the sides of the Blumlein sound field.

The author asked me to add this link to a Blumlein patent: https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=GB&NR=394325A&KC=A&FT=D&ND=1&date=19330614&DB=&locale=en_EP

 on: March 10, 2019, 02:44:53 pm 
Started by Tim Campbell - Last post by klaus
Proof will be in the pudding.
One comment:
made it (CK12 capsule) ready for the 21s century

What does that mean, factually and technically? You start messing with something ingeniously good, you can slide off the hill really fast.
Other capsule manufacturers' approach to reinventing legacy capsules should be a warning in this regard.

 on: March 10, 2019, 05:25:33 am 
Started by Tim Campbell - Last post by Frankenheimer
after several years of abstinence and hard working, my addon.

Austrian audio showed their new microphones at the NAMM etc.
(...)  removed. Too much straight advertising. K.H.
And they "reinvented" the original CK12 and made it ready for the 21s century.
There will be an updated website with listed worldwide distributors.

IMHO they are not hedge funded and the concentraded knowgledge has been presevered.
Also the woman who handcrafted the original CK12 capusle is on board.
There are plenty of pics on their facebook site !

Also there will be new headphones out really soon.

Even in the digital era, good mics are essential to every production !


The old AKG service team is also around repairing the vintage microhones. Had all my 414 etc. repaired and they do it very well.

Hope, that will clear things up.

Best regards

 on: March 09, 2019, 03:21:55 am 
Started by Nob Turner - Last post by klaus
I had stated that the capsule is original Neumann, bu this would be the first time I've seen a lead out wire much smaller in diameter than the eyelet's cup, and of a different color customary for Neumann (which so far has either been yellow or red).

 on: March 08, 2019, 11:02:08 pm 
Started by Nob Turner - Last post by uwe ret
Klaus, I hate to contradict in this case, but other than the terminal lug being bent just below the crimp, this looks very much like an original Neumann capsule. Also, as you know very well, only highly expert attempts at tampering with the center terminal will NOT leave wrinkles in the diaphragm. Also, the screw head looks pristine.

 on: March 07, 2019, 12:30:33 pm 
Started by Nob Turner - Last post by klaus
Would that imply, to you, a re-diaphragmed capsule? Or would someone have a reason to change only the lead-out wire?

No, it does not imply a rediaphragming took place, and on this specific example, it does not look like anything else but changing out the lead out wire was done.

 on: March 07, 2019, 11:32:44 am 
Started by Nob Turner - Last post by David Satz
I just wanted to point out that the TLM 49 is a single-pattern cardioid microphone, like the M 147 Tube and the U 47 fet. In those models the back half of the capsule has a purely acoustical function, and no electrical connection is required.

From a practical perspective, a dual-diaphragm capsule for a single-pattern cardioid microphone doesn't need to meet any very high standard for front/back response symmetry. It's mainly in the figure-8 setting that this matters (since any difference in front/back sensitivity causes the null to deviate from 90 degrees, thus making the microphone unsuitable for M/S or Blumlein stereo recording).

I don't know Neumann's current practices--they've gone through several twists and turns--but for some years at least, K 47/49-type capsules for single-pattern microphones were finished, QC'ed and stocked separately from the capsules for their switchable-pattern models. Unfortunately, the naming conventions have also varied over the years. As a result, the name printed on the box doesn't necessarily tell you everything that you need to know. It could take some extra effort to find out for certain what a given capsule actually is.

--best regards

 on: March 07, 2019, 08:24:34 am 
Started by Nob Turner - Last post by soapfoot
Looks genuine, but the lead-out is not.

Would that imply, to you, a re-diaphragmed capsule? Or would someone have a reason to change only the lead-out wire?

 on: March 06, 2019, 12:36:37 pm 
Started by Nob Turner - Last post by klaus
Looks genuine, but the lead-out is not.

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