I also have a pair of Sanken COS-11 lavaliers wired to mini which I could
use as a load, if that would prove useful.
-jeremiah
On Wed, Apr 7, 2010 at 2:45 AM, nick_felmicamps <>wrot=
e:
>
>
> Thank you for those results Jeremiah they are very useful, I will add
> them to the list.
>
> It looks as if Sony are being a little more generous with their plug-in
> power than they used to be, however I am afraid the WL-183 load is not
> high enough to be sure, if someone did have a resistor (around 1000
> ohms) and a meter that would confirm things.
>
>
> Nick.
>
> --- In <naturerecordists%40yahoogroups.co=
m>,
> Jeremiah Moore <>
> wrote:
> >
> > Just getting some time to measure the PCM-M10. Here are my findings.
> >
> >
> > I put the PCM-M10 (hereafter "M10") in record-pause for tests, to
> energize
> > the PIP circuit.
> >
> > I don't keep an resistors around, so was unable to do that test.
> However, I
> > did take measurements when loaded with a stereo pair of Shure WL-183s.
> >
> > To take measurements I used a minijack Y-adapter and male-to-male mini
> to
> > provide accessible contacts. I applied the multimeter leads to
> tip/sleeve
> > and ring/sleeve. Tip/Ring variance was within 1/100th unit.
> >
> > Unloaded: 2.96v 0.62mA
> > Loaded: 2.50v 0.62mA (load is Shure WL-183 microphone pair)
> >
> >
> > I wonder how this fares for Klas's mics?
> >
> > -jeremiah
> >
> >
> >
> >
> >
> > On Tue, Mar 30, 2010 at 2:08 PM, nick_felmicamps :
>
> >
> > >
> > >
> > >
> > >
> > > Hi Jeremiah,
> > >
> > > Thank you for offering to take some PIP measurements, they will be
> of great
> > > interest to Klas, Rob and myself. The details are all below from a
> previous
> > > post:
> > >
> > > The measurements we need are taken between the sleeve of the 3.5 mm
> > > microphone socket and either the ring or the tip (but not both
> together).
> > > The measurements must of course be taken with Plug-in Power switched
> on and
> > > without a microphone connected, the recorder will need to be in a
> record
> > > mode and paused and it would be sensible to turn the record level
> completely
> > > down. We need these four results:
> > >
> > > 1. Maximum voltage available (meter switched to volts) and connected
> > > between sleeve and tip or ring (typically 2-4 volts)
> > > 2. Maximum current available (meter set to mA or uA) and connected
> between
> > > sleeve and tip or ring (typically 0.3-1.3 mA)
> > > 3. Voltage across a known resistor (ideally around 1000 ohm)
> connected
> > > between sleeve and tip or ring
> > > 4. Value of that resistor in ohms
> > >
> > > For those without a suitable resistor to hand measurements 3 and 4
> are
> > > not essential but will be useful, particularly in determining if the
> > > device uses a constant current supply.
> > >
> > > Please do not undertake if you have any concerns for your or your
> > > equipment's safety.
> > >
> > > The results to date are published here:
> > >
> > >
> > >
> http://spreadsheets.google.com/pub?key=3DtT8j52wDyIkmA47A_Y3Jfjg&single=
=3Dtr\
>
> ue&gid=3D0&output=3Dhtml
>
> <http://spreadsheets.google.com/pub?key=3DtT8j52wDyIkmA47A_Y3Jfjg&single=
=3Dtrue&gid=3D0&output=3Dhtml>
> > >
> > > Nick
> > >
> > > --- In
> <naturerecordists%40yahoogroups.com>
> <naturerecordists%40yahoogroups.com>,
>
> > > Jeremiah Moore jmoore@ wrote:
> > > >
> > > > I own a Sony PCM-M10 and am very interested in low-noise portable
> kit for
> > > > it. (and hence in your offering, Klas!)
> > > >
> > > > Happy to test the PIP voltage if anyone can provide a methodology.
> (I
> > > > assume the PIP circuit must be loaded for the measurement to be
> valid;
> > > what
> > > > to load it with?)
> > > >
> > > > I have at my easy disposal:
> > > > - radio shack digital volt-ohm meter
> > > > - Shure WL-183 pair wired for minijack / PIP
> > > > - Sanken COS-11 pair wired for minijack / PIP
> > > >
> > > >
> > > > -jeremiah
> > > >
> > > >
> > > >
> > > > On Sun, Mar 28, 2010 at 9:31 PM, Rob Danielson type@ wrote:
> > > >
> > > > >
> > > > >
> > > > > At 11:24 PM +0200 3/28/10, Klas Strandberg wrote:
> > > > >
> > > > > >Rob, I would like to know if the D50 provides enough PIP
> voltage.
> > > > > >
> > > > > >Considering that there are now really good microphones running
> on
> > > > > >PIP, I think it is relevant to mention if these mic=B4s cannot
> be used
> > > > > >with the D50.
> > > > >
> > > > > Hi Klas--
> > > > > I agree, but if the performance is significantly
> > > > > compromised running on PIP, I like your idea of
> > > > > using a simple battery box.
> > > > >
> > > > > >
> > > > > >For example - to lower the self noise of EM23, I have put two
> FET's
> > > > > >in parallel for the ones using Olympus and Zoom. But can this
> version
> > > > > >of EM23 be used with the D50? Other recorders?
> > > > >
> > > > > I believe the Sony M10 and D50 have more PIP
> > > > > voltage than the very low voltage/current Hi-MD
> > > > > units you accommodated with the parallel FET's.
> > > > > I don't own one of the new Sony's and can't
> > > > > measure it for you, but there should be several
> > > > > folks like Jerry who I'm sure have tried their
> > > > > EM23's on one the below top-performing hand-held
> > > > > recorders and can report to you:
> > > > >
> > > > > Sony M10,
> > > > > Sony D50
> > > > > Marantz PMD620
> > > > >
> > > > > I'm anxious for someone to try out a pair of your
> > > > > "Clip Ons" on one of the above recorders. I think
> > > > > Mike Rooke owns a D50 and he lives in your part
> > > > > of the world. Rob D.
> > > > >
> > > > > >
> > > > > >This was no problem a couple of years ago, when no mikes used
> more
> > > > > >than 0,25 mA.
> > > > > >But now it might be.
> > > > > >
> > > > > >I know that we dealt with this before, but the data that was
> given at
> > > > > >that time didn't make sense to me.
> > > > > >
> > > > > >Klas.
> > > > >
> > > > > --
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > ----------------------------------------------------------
> > > > jeremiah moore | SOUND | jmoore@
> > > > http://www.jeremiahmoore.com/
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
> >
> >
> > --
>
> > ----------------------------------------------------------
> > jeremiah moore | SOUND |
> > http://www.jeremiahmoore.com/
> >
> >
> >
>
>
>
--
-----------------------------------------------------------
jeremiah moore | SOUND |
http://www.jeremiahmoore.com/
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
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