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Re: Rane link - a warning

Subject: Re: Rane link - a warning
From: "klangstrand" klangstrand
Date: Thu May 9, 2013 4:15 am ((PDT))
Hi Max!
I=B4ve never looked at that connection on the Rane Note before, but upon cl=
oser look it seems very wrong, yes. I=B4ve never lifted a ground like that.=
 Thanks for sharing the reply!
Best
-Anders

--- In  "Max" <> wrote:
>
> Hi Anders and all,
> I decided to contact Rane about my problem with their Note 110. I copy th=
e relevant part of the reply I received below.
>
> Regarding RaneNote 110, realize that this connectivity is a last ditch me=
asure for interfacing unbalanced to balanced when transformers are not an o=
ption. For microphone interconnections, the methods listed seldom apply.
>
> First and foremost is the issue of sending phantom power to microphone: a=
ll three wires must be in place for this scheme to energize the mic.
> Second, lifting shields on microphone cables typically adds hum and noise=
, instead of reducing the symptom.
> Lastly, when stereo plugs are utilized, these equate two unbalanced conne=
ctions on a single plug, therefor correct interpretation becomes necessary.
>
> Max
>
> --- In  "Max" <maxcatterwell@> wrote:
> >
> > Just realised I should have put the Rane link in the below message. Her=
e it is:
> > http://www.rane.com/note110.html
> >
> > --- In  "Max" <maxcatterwell@> wrote:
> > >
> > > For some reason I can't retrieve messages this morning to reply, so t=
his is an extra relating to the Rane link that Anders posted for me.
> > > While making up my new Y split cable for the AT-8022, I followed what=
 appeared to me to be correct for, I'm guessing, not only this Y cable, but=
 any cable from mic to recorder. I can only think that in my present mental=
 state I missed something obvious. I followed figure 4 which appeared to in=
dicate I needed to use #1. What this indicates is ground connected to pin 1=
 on the mic side, but left unconnected on the recorder end. As a precaution=
, when I did the wiring, I didn't cut off the ground sheath but insulated i=
t and left intact. It's a good job I did, because on connecting the mic to =
my HD-P2 there was no signal at all! I quickly realised that the missing re=
corder side ground might be the problem, so soldered them in. Bingo! It now=
 worked perfectly. I hope somebody will show me where I went wrong with the=
 Rane table.
> > > As an extra here, I'll say a few words about my VERY brief experience=
 with this AT-8022. I did very rough and ready tests using the battery with=
 my LS-10, and then phantom power with my HD-P2, in the same room concurren=
tly. On normalising both recordings to a similar level, and then changing t=
o spectogram view, it looked pretty clear that the HD-P2 recording was much=
 cleaner; the background black indicated this. Although the HD-P2 has sligh=
tly less self noise than the LS-10, I don't think this was the sole reason,=
 perhaps not relevant at all. I suspect that phantom power v battery is the=
 reason. Any comments very welcome, and I'm very aware that my tests were b=
y no means scientific! Either way, unless further testing proves otherwise,=
 I'll be using this whenever possible, with the HD-P2. It's hardly worth  m=
entioning, but the HD-P2 recording also sounded better.
> > > Cheers
> > > Max
> > >
> >
>








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