Re: Handy metal body for electret capsules.
Yes, I tried the heat gun first thing when I had trouble dismantling. Didn't work particularly well for me.
You need one or other sort of clamps anyway for they got too hot to handle in bare hands and leather gloves are too slippery.
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Re: Handy metal body for electret capsules.
I'm working on my first pair of these. If you use a heat gun, it will soften the locktite-type material they use and it will unscrew much easier!
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So sad to hear about Les. He is a legend and will be missed. Best Regards,
Jules Ryckebusch?
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On Mar 8, 2024, at 21:37, Joe Diliberto <loudmusic2@...> wrote:
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Very sad.? Now I want to make a gum foil, magnet, trans ribbon mic in his honor lol!
Very sorry to hear that, and thanks for letting us know. . I certainly learned a lot from him and his many contributions here.
On 3/8/24 11:44, Brian Gilbert wrote:
Hello everyone- I¡¯m sorry to report this, but Les Watts passed away sometime last week. He was an engineer at Shure and electo-voice, and very highly skilled engineer and machinist. He designed and built the ¡°polyribbon ¡°, a ribbon mic with selectable pickup patterns and a frequency response to 16k. He only built four of them (I have the prototype), but they were so complex to build that even he didn¡¯t want to repair them.
I¡¯m afraid that I don¡¯t have any more information or details regarding funeral arrangements, etc
BG
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Very sad.? Now I want to make a gum foil, magnet, trans ribbon mic in his honor lol!
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Very sorry to hear that, and thanks for letting us know. . I certainly learned a lot from him and his many contributions here.
On 3/8/24 11:44, Brian Gilbert wrote:
Hello everyone- I¡¯m sorry to report this, but Les Watts passed away sometime last week. He was an engineer at Shure and electo-voice, and very highly skilled engineer and machinist. He designed and built the ¡°polyribbon ¡°, a ribbon mic with selectable pickup patterns and a frequency response to 16k. He only built four of them (I have the prototype), but they were so complex to build that even he didn¡¯t want to repair them.
I¡¯m afraid that I don¡¯t have any more information or details regarding funeral arrangements, etc
BG
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This is very sad.? Les was one of the true microphone gurus.
I suddenly remember there's a load of stuff I wanted to discuss with him :(
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Ah, that is sad news indeed.? Les was not only one of the gurus, a *real* microphone designer, but he was willing to hang out here and answer newbie questions as well as discuss serious design issues. We are blessed to have a number of such people here, which is why I love the group so much.
-Scott
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On 3/8/24 18:01, eric benjamin wrote: I'm very sorry to hear that. I will miss him.
On Fri, Mar 8, 2024 at 2:18?PM FAB Microphones <cjgalbraith@...> wrote:
Very sad news. He was a great guy and engineer.
--
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy" - Joe Henry
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Very sad news. He was a great guy and engineer.
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Very sorry to hear that, and thanks for letting us know. . I certainly learned a lot from
him and his many contributions here.
On 3/8/24 11:44, Brian Gilbert wrote:
toggle quoted message
Show quoted text
Hello everyone- I¡¯m sorry to report this, but Les Watts passed away sometime last week. He was an engineer at Shure and electo-voice, and very highly skilled engineer and machinist. He designed and built the ¡°polyribbon ¡°, a ribbon mic with selectable pickup patterns and a frequency response to 16k. He only built four of them (I have the prototype), but they were so complex to build that even he didn¡¯t want to repair them.
I¡¯m afraid that I don¡¯t have any more information or details regarding funeral arrangements, etc
BG
|
Hello everyone- I¡¯m sorry to report this, but Les Watts passed away sometime last week. He was an engineer at Shure and electo-voice, and very highly skilled engineer and machinist. He designed and built the ¡°polyribbon ¡°, a ribbon mic with selectable pickup patterns and a frequency response to 16k. He only built four of them (I have the prototype), but they were so complex to build that even he didn¡¯t want to repair them.
I¡¯m afraid that I don¡¯t have any more information or details regarding funeral arrangements, etc
BG
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On Thu, Mar 7, 2024 at 05:14 PM, Richards wrote:
Wikipedia says this:
Multi-pin circular connector (Marushin, MCC, CBC series, Foster, GX-16)
Usually known as GX connectors. GX12, 16 & 20, in reference to the external diameter.
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... never heard of Foster plugs ...
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Wikipedia says this:
Multi-pin circular connector (Marushin, MCC, CBC series, Foster, GX-16)
First used in the 1970s by Japanese radio manufacturers as an alternative to the German DIN connector standard for microphone connectors on citizens band and amateur radio equipment, these screw-on circular connectors are available with 2, 3, 4, 5, 6, 7, or 8 pins. They are often used for other purposes as well, for example, 2-pin connectors used for DC power in 1970s Kenwood mobile radios and soldering stations from Eastern Asian manufacturers in the 1990s using the connector for the iron/hand piece.[1]
As reported by Philmore-Datel (LKG Industries of Rockford, Illinois), the American importer and distributor of these connectors, the original Japanese manufacturer, Foster, ceased production. Due to the loss of factories in the 2011 T¨hoku earthquake and tsunami, connector manufacturing moved from Japan to Taiwan and mainland China. Marushing Electric Mfg. Co., Ltd. in Kanagawa, Japan, the original 1950s producer of the connector type, still continues manufacturing.[2] Japanese communications equipment manufacturers such as Icom and Yaesu Musen have used Marushin connectors in their products.
These connectors are sold under a variety of generic names: CB connector, mobile connector, microphone connector, and power connector. Sometimes they are misidentified as XLR connectors.
Chinese mainland and Taiwan manufacturers adopted this connector as the GX16 (16 mm) for power and avionics usage. The Chinese GX series is used as a multi-voltage connector for soldering stations, avionics, marine equipment etc.
The manufacturer Renhotec has standardized the GX series in a variety of sizes named after the diameter of the connector (in mm): GX12, GX16, GX20, GX25, GX30, GX35, GX40.
Even though this circular connector is largely standardized, there is no industry standard for wiring or pin usage. The individual pin assignments to specific functions varies from manufacturer to manufacturer.
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I generally agree with everybody else's recommendations (ie: use something else) but I see the attraction of an "off-the-shelf" solution, especially since the mic preamps and gain control are built-in, and there's even a handy auto-switching 3.5mm socket for external mics. I have a lot of those Zoom mic modules (leftover from older Zoom H5 recorders that I sent back for free replacement because they got sticky and disgusting. Zoom told me to keep the accessories, and then sent new H5s with all the accessories!)
I did a similar teardown and tried to reverse-engineer the edge connector. I gave up, but discovered lots of clues along the way. I put the notes and pinout on my page of Zoom recorder tech info here:
If you decode any more mysteries, I'd be happy to hear about it and add some more detail to the website.
-Zach
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Re: Top secret Earthworks M50 capsule, or the Thunder Capsule!
maybe they just remove the high-pass filter ?
CMC 6 U linear
The CMC 6 U microphone amplifier normally has a gradual rolloff in response below 20 Hz to guard against infrasonic disturbances from various sources such as air movement and vibration. However, when using pressure (omnidirectional) transducers, particularly with digital recording, it can be desirable to pick up frequencies below 20 Hz without attenuation. The special technology of the CMC 6 U linear microphone amplifiers makes this possible; on request we can deliver microphone amplifiers with response that is flat to as low as 10 Hz. Caution must be advised with respect to infrasonics, however. Since pressure transducers can pick up very low frequencies, ventilation systems in large spaces (churches, concert halls) or traffic rumble can create a problem. With pressure gradient transducers the risk is even greater. They are far less sensitive to very low frequency sound, but respond much more strongly to low-frequency mechanical stimuli such as air currents and solid-borne noise. Such signals may be below the audible range of frequencies, but they can overload electronic circuitry and produce severe distortion, particularly in transformer-coupled circuitry.
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Re: Top secret Earthworks M50 capsule, or the Thunder Capsule!
Exactly¡ Schoeps talks about being able to slow down playback on the extended frequency range mics to allow you to cleanly hear pitched down ultrasonics.?
IMHO you can grab infrasonic sound with a sealed woofer in an enclosure. ? For ¡°accuracy required¡° infrasonic measurements, ?the industry uses accelerometers geophones, and seismometers. ? Best Regards,
Jules Ryckebusch?
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On Mar 6, 2024, at 16:27, Jerry Lee Marcel <jerryleemarcel@...> wrote:
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"CMC 6 Uxt - extends the high-frequency response of all
¡°axially addressed¡± (end-address) capsules to ~40kHz."
How can increasing the HF response help with infrasonics?
Subsonic is an aviation term.
Le 06/03/2024 ¨¤ 14:36, francois via
groups.io a ¨¦crit?:
mine is the xt linear but I guess a regular cmc6 can be also
modified to record subsonic
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Re: Top secret Earthworks M50 capsule, or the Thunder Capsule!
"CMC 6 Uxt - extends the high-frequency response of all
¡°axially addressed¡± (end-address) capsules to ~40kHz."
How can increasing the HF response help with infrasonics?
Subsonic is an aviation term.
Le 06/03/2024 ¨¤ 14:36, francois via
groups.io a ¨¦crit?:
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Show quoted text
mine is the xt linear but I guess a regular cmc6 can be also
modified to record subsonic
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Re: Top secret Earthworks M50 capsule, or the Thunder Capsule!
mine is the xt linear but I guess a regular cmc6 can be also modified to record subsonic
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High grade connectors are often listed under Aviation Connector. Like LEMO, M12, XSn or YCn....
I've never heard "Foster Jacks", I know these radio connectors only as XSnn, ofthe the 4pol XS12 is used for the mic and these are listed?as aviation connectors too.
Am Mi., 6. M?rz 2024 um 12:07?Uhr schrieb Richards < jrichards@...>:
like an 'aircraft' connector ...
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I believe these are also called "Foster Plugs"? and "Foster Jacks" - as in 4 or 8 pin Foster Jacks found on amateur radio transceivers.? (I am NOT being critical - just giving another name that might make it easy to find and acquire same.)? James
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like an 'aircraft' connector ...
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I believe these are also called "Foster Plugs" and "Foster Jacks" - as in 4 or 8 pin Foster Jacks found on amateur radio transceivers. (I am NOT being critical - just giving another name that might make it easy to find and acquire same.) James
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Re: Top secret Earthworks M50 capsule, or the Thunder Capsule!
My understanding is that the XT has an extended HF response (up to 40kHz). When down-sampled, the LF limit of 20Hz becomes 10 or 5 Hz, but it does not have the capability of recording 10Hz or 5Hz native signals.
?
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Mark Day
Brian Gilbert
underwood