They are rather good, I blogged about the blimp boundary setup here:-
http://www.urlme.net/blog/?p=1733
Ive also used two of the capsules inside silicone ears fitting to the same
blimp. -tree not required.
http://www.urlme.net/blog/?p=1754
The pinna accept the shure capsules or primo - I also investigated dynamic mics
modified with pinna, the ear amplification was present but the low end suffered
too much due to occlusion of the mics rear ports - not much use in the field
compared to the unmodified dynamic.
more on the latter comment later Ron...
-M
--- In "John Carroll" <>
wrote:
>
> Just a quick addition to the previous post, these mics (Shure MX391/O)
> work fine on the approximately 3V PIP supplied by the Sony D50. The
> original connectors were removed and both mics were wired directly to a
> 3.5mm stereo plug. The published specs are confusing. When I first
> read the specs I thought they required phantom power, but the mics alone
> (without the pre-amp that they are normally used with) work well on PIP.
> Thanks to John Hartog for setting me straight on this point. -jc
>
> --- In "John Carroll"
> <carrolljohnl@> wrote:
> >
> > For those interested in the Shure MX391/O mics, here is a recording of
> an evening frog chorus I made last night. As Mike said, the MX391's
> are well balanced and they're easy to modify for PIP.
> >
> > Coupled with a Sony D50, a strap, a paper clip (to hang the recorder)
> and some velcro, they make a nice, very portable rig for "tree ears"
> type recording (pic on SoundCloud).
> >
> > http://soundcloud.com/dismalhiker/aug-13-11-frog-chorus-ouachita-pond
> >
> > John
> >
> > --- In "Mike Rooke" yg@ wrote:
> > >
> > > Hi John,
> > > I ordered a few of these mics last month and tested a
> couple recording a storm - the response is very nice. Construction
> quality is excellent and I was impressed how they matched, near
> identical.
> > >
> > > Heres the LS10 recording a storm, gain 4 sensitivity low...
> > >
> > > http://soundcloud.com/urlme/storm-ls10-shure-mx391o
> > >
> > > I set the pair up to act as a reference for a binaural recording,
> > >
> > > http://soundcloud.com/urlme/under-the-apple-tree
> > > (too much road din)
> > >
> > > BR
> > > Mike.
> > >
> > >
> > > --- In "hartogj" <hartogj_1999@>
> wrote:
> > > >
> > > > I noticed this deal on ebay, so I bought a couple, and am playing
> with them now.
> > > >
> > > > Shure Microflex Wired Boundary Microphone - MX391 (#310322612261)
> > > > http://tinyurl.com/3e2f8aq
> > > >
> > > > The MX391LP/O is basically the same mic as the WL183, except it is
> mounted inside a boundary housing and the wire attaches to the
> microphone barrel from the rear instead of from the side, and it comes
> with a longer cable.
> > > >
> > > > The housing is lined with thin foam which works as basic wind
> protection.
> > > >
> > > > The noise spec of 13dB is misleadingly low as the figures are
> adjusted for use as a boundary mic on large boundary like a conference
> table, so for other uses they are likely the same as the wl183 - so
> around 20db self noise.
> > > >
> > > > Same as the WL183, they would require an adapter cable or
> soldering directly to a 3.5mm plug to use with plug-in power. These do
> not come with phantom powered pre-amps.
> > > >
> > > > I have no association with the seller, and I have no idea if the
> Shure warranty is good from resellers.
> > > >
> > > > If you want to experiment with ground oriented spaced omnis, the
> price, $35US each, is pretty good.
> > > >
> > > > John Hartog
> > > > www.rockscallop.org
> > > >
> > >
> >
>
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