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Re: MKH vs Telinga EM23 noise

Subject: Re: MKH vs Telinga EM23 noise
From: "Rob Danielson" danielson_rob
Date: Fri Sep 1, 2006 8:48 am (PDT)
At 5:30 PM +0200 9/1/06, Klas Strandberg wrote:
>Rob, - as far as I know, the MKH mic's use much more current than the mic'=
s
>you have tested with the Rolls.
>It might very well be that the Rolls start to generate noise when that hig=
h
>current is being squeezed out of it.

Not my experience at all. I've run phantom
current  "hogs" on the Rolls with no performance
loss. He can try alkaline bats though.

>The MT 24/96 works just fine with a phantom powered EM23, but adds a
>terrible noise when connected to a PRO6 handle. Why? It is very difficult
>to find the reason. The noise of a DC-chopper lives it's own life, all ove=
r
>the recorder, and whether it becomes audible or not is more or less a myst=
ery.
>
>Klas.
>
>At 16:47 2006-09-01, you wrote:
>>Scott--
>>Assuming L=3DMid and R=3DSide:
>>
>>1) A mkh30 does have slightly more noise than a mkh 40, but not this
>>much usually.
>>
>>There are three factors to account for: (a) the two mics, (b) the
>>rolls (c) the recorder/settings. Do things like swap around the
>>inputs on the Rolls. Power the Rolls and mics differently if you can.
>>Try the Rolls with other mics if you can. Make sure all the
>>settings/inputs are right on the recorder.
>>
>>2) There is unusual low-end weighting/extra low end emphasis on the EM-32=
's.
>>
>>Its early, but your tests so far suggest to me that something is not
>>right with the recorder or a setting/setting on it. Swap your
>>gear/settings and connections around and see if you can isolate the
>>source of the problem.  Rob D.
>>
>>
>>
>>At 11:55 AM +0000 9/1/06, scottsherk27 wrote:
>>  >Hi Rob,
>>  >Thanks for giving this a listen.  I am running MKH's through Rolls
>>  >and into mic in of Sony RH10.  The EM23's are going directly into mic
>>  >in using only PIP.  I put new batteries into the Rolls immediately
>>  >before running the test.
>>  >
>>  >I have uploaded an un-normalized or decoded file of the MKH 40/30 and
>>  >also the un-normalized file of the EM23's both recorded at the 28
>>  >level.  They are at the bottom of the group on the page at
>>  >
>>  >http://tinyurl.com/hx9nq
>>  >
>>  >One thing that confuses me is that I thought the MKH's were more
>>  >sensative than the EM23's being rated at 25mV/Pa's as opposed to 10-
>>  >11.5mV/Pa for the EM23.  The un-normalized files argue against this.
>>  >
>>  >Thanks,
>>  >Scott
>>  >
>>  >
>>  >--- In  Rob Danielson <>
>>  >wrote:
>>  >>
>>  >>  Hi Scott- We'll, something odd is going on. Is just the 40/30 pair
>>  >>  going through through the Rolls and the em-23 running on PIP or are
>>  >>  both running through the PB224? Sure the batteries are fresh? If
>>  >both
>>  >>  pairs are going through the Rolls, can you upload the M-S 40-30 rec
>>  >>  level "28" files un-decoded and un-normalized?   Rob D.
>>  >>
>>  >>  At 11:07 PM +0000 8/31/06, scottsherk27 wrote:
>>  >>  >I recently began experimenting with a Sennheiser MKH 30-40 M/S rig=
.
>>  >>  >I've been running this through the Rolls PB224 and then into a Son=
y
>>  >>  >RH10 Hi-MD.  I seem to be experiencing too much high-end noise,
>>  >>  >especially compared to what I'm used to with my pair of Telinga
>>  >>  >EM23's.  I've posted some crude test recording on my site.  I`ve
>>  >>  >recorded the same clock with both the EM23's and the MKH's with
>>  >gain
>>  >>  >of 22 and 28 on the RH10.  I only normalized the files.  I would
>>  >>  >appreciate an assessment of this high-end noise.  Here is the page=
:
>>  >>  >
>>  >>  >http://tinyurl.com/hx9nq
>>  >>  >
>>  >>  >Thanks,
>>  >  > >Scott
>>  >  > >
>>
>>
>>
>>"Microphones are not ears,
>>Loudspeakers are not birds,
>>A listening room is not nature."
>>Klas Strandberg
>>Yahoo! Groups Links
>>
>>
>>
>>
>
>Telinga Microphones, Botarbo,
>S-748 96 Tobo, Sweden.
>Phone & fax int + 295 310 01
>email: 
>website: www.telinga.com
>  =A0=A0=A0=A0=A0=A0=A0
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>


--
Rob Danielson
Peck School of the Arts
University of Wisconsin-Milwaukee
http://www.uwm.edu/~type/audio-art-tech-gallery/





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