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 on: October 23, 2021, 06:09:54 AM 
Started by Vertigorecording - Last post by Hermetech Mastering
I'll contact them next week and report back.

 on: October 22, 2021, 11:35:05 PM 
Started by Vertigorecording - Last post by klaus
Contact Bruce Gentry (bgentry@sennheiserusa.com) and get the lowdown.
I would hope that KM8x capsules are sold as accessories, rather than spare parts.

 on: October 22, 2021, 03:58:46 AM 
Started by Vertigorecording - Last post by Hermetech Mastering
This is sad news for me as I had previously bought replacement KK84 capsules direct from Sennheiser, and would now like to add a pair of KK83 capsules so I can turn my mics into Omnis. I haven't enquired with Sennheiser yet, and I shall, but it doesn't sound hopeful. :( In which case, will I need to find a "middle person"/qualified/registered Neumann tech if I want to order a pair of KK83s? Does anyone have a suggestion for the contact details for one in the EU?

 on: October 18, 2021, 02:56:50 PM 
Started by Graemespicer - Last post by klaus
For everyone else interested in looking under the hood:


On relatively new heads make sure you observe Neumann's warranty coverage (one year) before you remove the wax seal and open the head.

 on: October 18, 2021, 02:50:12 PM 
Started by Graemespicer - Last post by Graemespicer
Thank you! I’ve researched the forum for directions on safely removing the head shell, so should be in good shape.

 on: October 18, 2021, 01:51:29 PM 
Started by Graemespicer - Last post by klaus
Yes, it will. No issues.

 on: October 18, 2021, 10:46:18 AM 
Started by Ernie Black - Last post by Ernie Black
Our host's fiber provider has announced that they will be doing scheduled maintenance between 12am and 6am on November 4th, 2021. During that time, there will be up to a 30-minute period of downtime, although these periods are frequently shorter than stated. If the forums are unavailable when you try to log in, please be patient as they will be back shortly.

UPDATE! Because of the nature of this fiber-optic maintenance, it will likely result in several hours of downtime in the overnight between 12am and 6am EDT.
While we are hoping that they will under-promise and over-deliver on this as they have previously, please anticipate that the forums will be unavailable for a period of time while the maintenance is performed.

 on: October 18, 2021, 09:20:24 AM 
Started by Graemespicer - Last post by Graemespicer
Hello! I did a quick search of the forum and couldnít find the answer to this question - my apologies if itís been covered before.

I recently purchased an early 80s vintage U87. It sounds beautiful, but has been pretty beaten up through its life :)

Neumann sells replacement grills/headbaskets (at an exorbitant price) for the 87ai. Will this fit my pre-1986 U87?

 on: October 16, 2021, 01:54:06 PM 
Started by J. Mike Perkins - Last post by klaus
FYI: The circuitry of Neumann's first transistor small-diaphragm mic "KTM, mentioned without further explanation in a couple of previous posts, is identical to that of its immediate successor, KM7x. Only the housing and head shapes changed.

 on: October 15, 2021, 06:47:06 AM 
Started by J. Mike Perkins - Last post by David Satz
Thanks, Uwe. Actually I realized my mental lapse and corrected my posting a week ago. But it's good to see the schematic as well, which has never been available from Neumann's Web site to my knowledge.

Kai, the Neumann history document on the KM 84 can be found on https://en-de.neumann.com/file-finder?product=KM%2084&category=historical -- the last document shown. There used to be a similar page about the KTM, but it doesn't appear to be on the site any more. You might also want to visit https://en-de.neumann.com/file-finder?product=KM%2074&category=historical .

The phantom circuit principle was already used in telephone systems long before it was used in studio technology; there's a nice YouTube video of a U.S. Army training film about it from the World War II era. And phantom-powered condenser microphones had been introduced three years earlier by Schoeps--the CMT 20 series, which incidentally used RF audio circuitry. Neumann's actual innovation in the KM 84 was the low-current 48-Volt arrangement for phantom powering, compatible (via an inexpensive adapter) with existing supplies for microphones based on the AC 701 tube. The latter aspect was important in gaining acceptance for the new microphones at German broadcasting organizations.

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