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Sanken COS 11 wiring

 

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? From?looking online it seems to be a tale of 'here be dragons' but surely it isn't that major a task? Or am I missing something??
 

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 you've got a little extra wire on the end to play with then definitely spend the time trying different things.

-Scott

On 7/2/24 05:56, Adrian Hicks wrote:
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? From?looking online it seems to be a tale of 'here be dragons' but surely it isn't that major a task? Or am I missing something?
--
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy" - Joe Henry
 

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 stripping this kind of wire can be difficult, diameters are much more finicky than regular wire stripping. I've found that using a fresh new Xacto or razor blade and very gently rolling it into the wire jacket works, it will cut the insulation but not the shielding wire underneath.

-Scott

On 7/2/24 05:56, Adrian Hicks wrote:
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? From?looking online it seems to be a tale of 'here be dragons' but surely it isn't that major a task? Or am I missing something?
--
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy" - Joe Henry
 

OK, thanks for this Scott.?

On Wed, 3 Jul 2024 at 00:25, Scott Helmke <scott@...> wrote:
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 stripping this kind of wire can be difficult, diameters are much
more finicky than regular wire stripping. I've found that using a fresh
new Xacto or razor blade and very gently rolling it into the wire jacket
works, it will cut the insulation but not the shielding wire underneath.

-Scott

On 7/2/24 05:56, Adrian Hicks wrote:
> 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? From?looking online
> it seems to be a tale of 'here be dragons' but surely it isn't that
> major a task? Or am I missing something?
>

--
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy"? - Joe Henry
 

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 the tiny hairs of conductors together with the kevlar inside the insulation. It's really easy to burn up the conductors, so you usually only have one chance to do a good job.

if the cable is deteriorating it's best to replace the whole mic. Over time the COS11 cable goes soft and tears easily. I we can easily tear the cables insulation with our nails we scrap the mic.?
 

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

Le 03/07/2024 à 10:31, Thomas Hopman a écrit?:

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 the tiny hairs of conductors together with the kevlar inside the insulation. It's really easy to burn up the conductors, so you usually only have one chance to do a good job.

if the cable is deteriorating it's best to replace the whole mic. Over time the COS11 cable goes soft and tears easily. I we can easily tear the cables insulation with our nails we scrap the mic.?

 

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

On 7/3/24 03:31, Thomas Hopman wrote:
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 the tiny hairs of conductors together with the kevlar inside the insulation. It's really easy to burn up the conductors, so you usually only have one chance to do a good job.

if the cable is deteriorating it's best to replace the whole mic. Over time the COS11 cable goes soft and tears easily. I we can easily tear the cables insulation with our nails we scrap the mic.
--
---- Scott Helmke ---- scott@... ---- (734) 604-9340 ----
"I have ceased distinguishing between the religious and the secular,
for everything is holy" - Joe Henry
 

On Wed, Jul 3, 2024 at 04:12 AM, Jerry Lee Marcel wrote:
Common variants of copper melt at more than 900°C (1650°F)
How can a soldering iron (350°C/ 660°F) "burn" it?
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 break and go in your blob of solder on the end the iron. But i assure you, you will never see them again.....? it's really easy to break the conductive material when tinning/stripping the wire.

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