K Brown - I’m not sure what you meant, but if by “parenthetical noise cancelling“ are you referring to my post “Mixing coincident mics equally reduces noise, as the correlated signal gain is 6dB while the uncorrelated noise gains 3dB, for an improved SNR of 3dB.”?- The parenthetical "noise-cancelling" is rather nonsensical, though. Hypercardioid has a considerably greater distance factor, if that's what they are referring to.
No, I was referring to the text on the pattern graphic in post #24.K Brown - I’m not sure what you meant, but if by “parenthetical noise cancelling“ are you referring to my post “Mixing coincident mics equally reduces noise, as the correlated signal gain is 6dB while the uncorrelated noise gains 3dB, for an improved SNR of 3dB.”?
Only if so, this is well-known re noise gain for mixing equal levels of correlated and uncorrelated signals, both electronically and physically, such as the width of mag tape tracks. However I did err in applying it in the present case, as the cardioid is mixed at +6dB. - Robin
Got it - thanks.No, I was referring to the text on the pattern graphic in post #24.
And after that, the Schoeps M 201 https://schoeps.de/en/about-schoeps/product-history-1/detail/m-200201-1.html"As was done with the AKG CK6, combining an omni and a cardioid out of phase, one gets a figure-8 pattern.."
This brings to mind the exact(?) opposite: the old Western Electric / Altec 'Birdcage' 639 which combined a figure-of-eight ribbon + an omni capsule, giving - in combination - a front cardioid pickup pattern. (See https://coutant.org/altec639/ )
(Sound took - or takes - longer to reach the front of the omni capsule than its rear ..as it's close to the front of the assembly, directly beneath the front of the ribbon, so is out of phase with the REAR of the ribbon - cancelling that - and reinforces the audio at the FRONT of the ribbon, giving enhanced pickup from the front and not much from the rear. Mine had a fault with the omni, so I just stuck in an omni capsule from a - similar vintage? - Grampian DP4 dynamic omni. Now works a treat!)
Like its om\cr MK5, Schoeps’ MK6 mechanically switched its rear port for selecting om\cr\bi. It didn’t perform to their standards, so they’ve dropped it.And after that, the Schoeps M 201 https://schoeps.de/en/about-schoeps/product-history-1/detail/m-200201-1.html
and currently, the Josephson C700A https://www.josephson.com/c700a.html
Possibly so. I had a 1985 MK5 back to Deutschland in about 2000, but only to change the case from nickel to umber. Nevertheless, Schoeps cleaned the diapragm & retensioned it, but reported no change in a gasket. Below are the Mk6’s polars FYI…I wonder if it was that or if the capsule was too "fiddly." I know the gaskets wore out over time and were hard to replace. I had a pair of capsules re-done before Schoeps stopped repairs.
Perfect board for a dual-capsule mic:
https://www.jlielectronics.com/diy-accessories/opa-alice-dual-channel/
. . . so, less-than-perfect... If you ignore the lack of attention given to the high-impedance areas, and otherwise haphazard routing and so forth...
Other options?
- Other options?
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