[Top] [All Lists]

Re: Telinga clip-ons?

Subject: Re: Telinga clip-ons?
From: "Mike Rooke" picnet2
Date: Sat Oct 22, 2011 3:21 am ((PDT))
"so we compare noise floors equally (if thats possible) I'd say they (the
EM172s) are nearly identical with a lower noise floor above 15 Khz."
Higher noise rather than lower, the shure capsules tail off the primo is fl=
at in the same region. Thus with the shure capsule the noise tone is warm s=
ounding and the primo more prominent where our ears are the most sensitive.=


--- In  "Mike Rooke" <> wrote:
> WL183's may be better on the M10, the D50 two or more EM172's work very w=
> - Ive used up to 3 capsules per channel. The Shure capsule engineering is=
 better or rather the capsule / mic housing is far more robust than an alum=
inium can hanging from a wire. Ive mounted EM172's inside machined brass cy=
> Comparing two sets of single mics I use.
> Shure MX391O capsule removed from its boundary housing and
> Primo EM172 mounted inside a brass cylinder to resemble the shure.
> Quick summary: The Shures "noise" is below 2Khz its warm, the Primos is a=
bove 2 Khz and is harsh.
> I use them as is, or stuffed inside silicone ears in a blimp. This negate=
s most of the noise due to the ears amplification but requires post EQ.
> Considering Single capsules:
> A single EM172 when using the D50 vs the Shure capsule at the *same* gain=
> maybe I shouldn't say this but the Shure capsules sound better. Let me su=
bstantiate that.
> At 1Khz the EM172 exhibits 4.31dB more output than the capsule from a Shu=
re MX391O boundary mic which is essentially the same as the WL183.
> So the EM172 is more sensitive. However thats not the whole picture.
> Above 2 Khz the EM172's noise floor is 4.74dB ABOVE the Shure capsules, w=
hich means the sensitivity benefit comes at the expense of noise. This I do=
n't quite follow since by the numbers the EM172 IS lower noise than the WL1=
83, except the noise "tone" (to use Robs?) expression sounds far harsher in=
 the EM172 than the WL183 which has a warmer tone.
> So what about matching levels... If the EM172 levels are matched to the S=
hure, so we compare noise floors equally (if thats possible)  I'd say they =
(the EM172s) are nearly identical with a lower noise floor above 15 Khz.
> What does all the above mean in a quiet recording location? - > With no s=
ignal at 5khz your listening to the noise of the capsule, and the Shure cap=
sules will have less noise there than the Primo's.
> See this graph to visually check what Im talking about:-
> Red trace is the Shure capsule, yellow is the Primo - the bumps are due t=
o environmental noise (household) - this was made at gain level 8 using the=
 D50. The noise for the Shures falls off above 2Khz, yet the primo is flat,=
 ok ok - so if we set levels identical where a signal t the primos is at th=
e same level when using the shures the noise floor of the Primos will defin=
ately be lower but that flat response region 2-10Khz will still be present =
and the Shure capsule will sound less harsh in that area.
> Thats my experience of the Primo capsule, I first used the capsule back i=
n August 2009 and sorry to say I no longer use them favoring the Shure caps=
ule "sound" and even more recently Im using Dynamic mics with the D50 in 96=
+% humidity soaking wet with condensation.  Lower noise doesn't always tran=
slate to better sound.
> -Mike.
> --- In  "Kawika" <dkuhn012001@> wrote:
> >
> > Hi all,
> > I am re-visiting Guatemala in January (I led a series of tours there in=
 the 1980's) and want to go low-profile with recording gear, leaving behind=
 SD702, MKH20 SASS, M-S set-up, and Telinga dish. I will be taking both Son=
y D50 and PCM 10 for recorders, and I'm looking at the Telinga clip-ons to =
use with either recorder for ambient sounds in quiet forest as well as mark=
et-places.  Can anyone offer recent experience with this set-up?
> >
> > Here are some notes from some testing work by Rob Danielson from=
 last year
> >
> >
> > and more--
> >
> >
> > (for Klas--I can't seem to find out much recent info from your site or =
elsewhere about these)
> >
> > Many thanks,
> >
> > David
> >
> >
> > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> > David Kuhn
> >
> > david@
> > dkuhn012001@
> > 808 335 0398
> > Cell 808 651 8247
> > Mail to: PO Box 1018
> > Waimea, Kaua'i HI 96796
> > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<
> >

<Prev in Thread] Current Thread [Next in Thread>

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU