Hello,
there is a lot to be said about balanced audio standards and also this
specific question you point out, about pin 1 connection to the
earth/shiled/housing - or not. I leave it out to others to expand on these
questions, but here is a Rane pdf trying to explain some of these
considerations:
http://www.rane.com/pdf/ranenotes/Grounding_&_Shielding_of_Audio_Devices.pd=
f
All the best,
/Bj=F6rn Eriksson
On Sat, May 12, 2012 at 10:51 AM, NordicNature <>wrot=
e:
> **
>
>
> Thank you for the help.
> I tried to buy some flux at three different places here locally, but none
> of them was selling flux. Two of them replied that "it's flux in the
> soldering thread, so you don't need it". I told them that I wanted to buy
> it anyway, but they didn't sell it. I probably have to buy it from intern=
et.
>
> Now i'm wondering about another thing.
> I got a 5m cable that came along with my BP4025 stereo mic. I have always
> though that it was really sensitive to pick up my cellphone signals. And =
I
> also needed a shorter cable in some situations so I opened it up to see h=
ow
> it was soldered so I could do it the same way with the cable and neutrik
> connectors I bought and also see why it was so sensitive to celllphone
> signals.
> It's a 5-pin female XLR to two 3-pin male XLR cable and it's two cables
> that is stuck together.
> One thing I noticed is that the shield that is soldered to the pin 1 on
> the connectors is then "bridged" to the XLR's earth/shield on the edge of
> the XLR connector. Does that make it use recorder as the earth/shield? Is
> it good or bad to do it like that? Does the cable get more or less
> sensitive to cellphone signals?
>
> I don't know if you (or maybe Jez?) can reply on this problem.
> I have two hydrophone mic's from Jez. They have 6.3mm TR connectors.
> They work fine if I connect them to channel 5 and 6 on my Tascam DR-680
> recorder, but if I connect them to channel 1-4 there is a strong annoying
> signal. The difference is that the first 4 channels have combined XLR/TR(=
S)
> connectors.
> I wanted to try and record under water with 192kHz out of curiosity and
> that only works with channel 1-2. Unfortunately I can't use those channel=
s
> since there is that "signal". Is this because it's TR and not TRS
> connectors on the mic cables? Should I buy TRS connectors and solder them
> in a special way? Maybe use 3-pin XLR?
> Can my recorder be broken even if using XLR connectors works fine in the
> same channels?
>
> I hope you understand at least some of my questions and have time to
> reply.
>
> /H=E5kan
>
>
> --- In "Avocet" <> wrote:
> >
> > > David (or anyone else), what kind of flux do you use?
> >
> > H=E5kan,
> >
> > Electrician's flux paste. It comes in a pot or tube which will last
> > years. Some electronic stores also stock it in tubes or in a dispenser
> > (expensive).
> > http://mobile.maplin.co.uk/module.aspx?moduleno=3D33849
> > Failing that, flux is based on rosin, which is also used by violinists
> > in a small block from music shops.
> >
> > I've also used plumber's flux, but it can contain acid which must be
> > cleaned off afterwards to prevent corrosion. Elecrtician's flux should
> > be acid-free.
> >
> > Tips with soldering is to keep the soldering iron tip clean and this
> > is easier with a temperature controlled iron. Pre-tin difficult
> > surfaces like some plug tags and clean off surplus blobs with a solder
> > sucker of by tapping the plug on a board. When using multicore solder
> > with a flux core, offer the solder to the join rather than on the
> > iron, but it never gives enough flux.
> >
> > I have a model makers stand which I've found handy for years which has
> > clips in arms which flex every which way which will hold plug bits
> > while soldering. I don't know if you can still get them.
> >
> > David
> >
> > David Brinicombe
> > North Devon, UK
> > Cogito cogito ergo cogito sum - Ambrose Bierce
> >
>
>
>
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