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the conductor in the cable of a cos11 is literally a few strands of extremly thin conductive material coiled around a kevlar core. "Burning up" might have been a bad choice of words. they probably

For the LEMO connector the wires are only stripped 1-2mm! Nothing like talking to somebody who does a process in bulk to learn the most efficient way of doing it. Thanks, -Scott -- ---- Scott

Common variants of copper melt at more than 900°C (1650°F) How can a soldering iron (350°C/ 660°F) "burn" it?

At my job a few hundred Lemo-3 connectors to COS-11 every year. i typically strip the wire using a little bit of tin on my soldering iron and just push the insulation down or off the wire. You solder

OK, thanks for this Scott.

There are many ways to skin this proverbial cat. One is given there: https://www.edn.com/condenser-microphone-uses-dc-coupled-impedance-converter/ It has the added advantage of minimizing output

I had the same hesitation, but because I don't have any real contacts in this area, and from what I can tell any such improvement is likely to get copied by low cost manufacturers in less than 12

Haha, you had exactly the same thoughts and ideas as I had using a BJT to set the bias point! My circuit works quite similarly, though with a slight twist. And I'm not sure yet whether I want to share

No extra info in my notes, other than black is usually positive and white can be grounded in a 2-wire topology.? In a 3-wire topology black would be bias and white would be audio out. Usually

Everybody seems to complain how JFETs are hard to bias and therefore a pain to build circuits around, especially cheap, mass produced ones, which can’t afford matched components or manual

I found a bit different graphs from the data sheet but that is a huge concern I read this article a while

I looked up the DC voltage characteristic of the TDK X5R cap in question. YIKES! Capacitance loss is way more than I had been led to believe. Here's the smaller 2012 package size Jules listed

I'll have to check my notes (at work), but I remember those just being a bit tricky to strip properly. Maybe there was some weird insulation, or some lacquer on the wire that had to be burned off. If

Hello hive mind, There is someone near me that has a Sanken COS 11 that they have damaged the cable to, does anyone know if it is a big ordeal to cut the cable and just wire a new connector on to it?

The broken DPA 6061 arrived, I suspect the electronics is fine and the capsule is broken. It's non-CORE, and the U(I) curve and teardown confirmed what I suspected: it's the topology from the

I measured single-ended into a 3kOhm load. Differentially measured will reduce even order harmonics. If a preamp has lower input impedance, both THD and bass roll-off will be even worse. If you do

j.postma8: Agreed. X8R, X7R, X6R, X5R, X7S, Y5V ceramics completely useless, should be avoided imo. Only COG/NPO ceramics acceptable for audio. https://en.wikipedia.org/wiki/Ceramic_capacitor The

Interesting. I’m not seeing anywhere near that level of distortion. Best Regards, Jules Ryckebusch

Henry, I basically agree with your first three paragraphs. But where you go wrong is with your assumptions and calculations. The capacitance drop is not just 0.1uF at 22V, but it drops to just ~3uF!

As usual, I should have been more specific and detailed. I was holding up T-S parameters as an example of a lumped parameter model. The specific parameters can be separated by domain. 1).