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Author Topic: What brand is this mic?  (Read 2882 times)

Ron Hummel

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What brand is this mic?
« on: June 30, 2016, 01:53:47 pm »

I recently acquired this beautiful Bottle/Tube mic from a life-long collector.  I thought is was either a Neumann or Telefunken Bottle/Tube mic circa 1940's, but Klaus Heyne says it's neither.  It has very good machine work, heavy gauge stainless steel, but electronics have been removed.  I liked it just for the looks and condition, but would love to know who made it.  (2) photos attached.
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gtoledo3

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Re: What brand is this mic?
« Reply #1 on: July 03, 2016, 02:30:18 am »

It has a look that reminds me of the Telwa bottle mics, but it's also not exactly like any of them I've seen pictured... so just as good a chance it has nothing to do with that!

Still, I figured better to mention than not.
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klaus

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Re: What brand is this mic?
« Reply #2 on: July 03, 2016, 03:01:47 am »

It's hard to believe that not only the amp but even the capsule has been removed from this mic. Have you had a chance to open up the head and look inside? It could give a clue.
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Klaus Heyne
German Masterworks®
www.GermanMasterworks.com

Ron Hummel

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Re: What brand is this mic?
« Reply #3 on: October 03, 2016, 12:22:51 am »

This element is inside the top capsule.  Does that help to identify the maker?
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Kai

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Re: What brand is this mic?
« Reply #4 on: October 03, 2016, 03:25:30 am »

The picture  does not show this clearly , but it looks like a dynamic.
Is there a voice coil attached to what seems to be a domed diaphragma ?
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Bob Eaton

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Re: What brand is this mic?
« Reply #5 on: October 14, 2016, 02:12:58 pm »

Hard to tell for sure from the photo, but it looks like an aluminum diaphragm with a drive pin attached in the center.
That would likely make it a crystal (or ceramic) or controlled magnetic. The diaphragm looks very similar to the diaphragm on the old Astatic D104 crystal capsule (MC320). Of course those capsules have a huge resonant peak around 2500 Hz. The MC320 capsule in the D104 had a thick piece of fiberglass insulation (aircraft insulation) on the front to dampen the peak.
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