Glad it's sorted, happy recording!
Phil
--- Hector Centeno <> wrote:
> OK! Problem solved. It's the adapters (obviously). I
> found that pins 1
> and 3 were also in contact with the outer barrel of
> the XLR.
> Disassembling the adapter separating the 1/4 input
> section from the
> XLR output section made the noise to stop. Thanks a
> lot for your
> advice.
>
>
> Hector
>
>
>
> On Feb 11, 2008 2:27 PM, Philip Tyler
> <> wrote:
> >
> >
> >
> >
> >
> >
> > Hi Hector
> >
> > Just checking, you have turned the phantom power
> off
> > have you on the FR2 LE? As that could cause
> problems.
> >
> > Wiring the earth / screened to both pins 1 and 3
> > should not cause problems, unless the input is
> not
> > transformer balanced but electronically balanced.
> But
> > I would have thought that the FR2 LE had
> transformers
> > on its input.
> >
> > I wire my unbalanced microphones the way I
> outlined
> > and I have not had any problems.
> >
> > If I am wiring up the balanced output of an
> > electronically balanced unit to work into an
> > unbalanced device then you only use pins 2 and 1
> > leaving pin 3 floating.
> >
> > Phil
> >
> >
> >
> > --- Hector Centeno <> wrote:
> >
> > > Hello,
> > >
> > > Thank you for your responses. Yes, I'm aware
> that
> > > the 1/4 inputs in
> > > the FR-2LE are line level so the first thing I
> did
> > > was to use a 1/4
> > > inch to XLR adapter to plug the AT-822 1/4
> outputs
> > > (which basically
> > > does what Phil suggested: hot to pin 2, ground
> to
> > > pin 1 and 3) but to
> > > my surprise I got a loud noise interference
> > > (buzzings that seem to
> > > come from the electronic circuits) mixed with
> the
> > > audio signal. So
> > > following this advice
> > >
> http://www.dplay.com/dv/balance/balance.html#cross I
> > > built a
> > > 1/4-female to XLR-male cable soldering the hot
> (red)
> > > wire to pin 2 and
> > > the ground (white) to pin 3 leaving pin 1
> > > disconnected. Now there is
> > > no noise! But if I touch the connector on the
> 1/4
> > > end (which is
> > > metallic) I get a soft ground hum. Any
> suggestions?
> > >
> > > Cheers,
> > >
> > > Hector
> > >
> > >
> > > On Feb 11, 2008 1:19 PM, oryoki2000
> > > <> wrote:
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Hector,
> > > >
> > > > I think you'll have to convert your mic
> cables to
> > > XLR, and not because
> > > > of the balanced vs unbalanced signal issue.
> > > >
> > > > Page 42 of the FR-2LE manual describes the
> analog
> > > inputs
> > > >
> > > > "These connectors are "combo" type (both 1/4"
> and
> > > XLR) and can connect
> > > > an external microphone via the XLR connector
> or
> > > an external line level
> > > > source via the 1/4" connector."
> > > >
> > > > On page 50, the manual says
> > > >
> > > > "The XLR connection accepts an analog signal
> > > between -50 dBu and -10
> > > > dBu...the phone plug accepts a -10 dBV analog
> > > audio signal."
> > > >
> > > > -10 dBV is equivalent to -7.78 dBu
> > > >
> > > > This says to me that the 1/4" inputs won't
> work
> > > well with a microphone
> > > > unless the audio source is extremely loud
> (rock
> > > band, plane taking
> > > > off, huge crashing waves, etc.)
> > > >
> > > > To test this idea, I found an inexpensive
> Radio
> > > Shack mic with 1/4"
> > > > output in a drawer. I plugged it into my
> FR-2LE
> > > and started
> > > > recording. I had to talk in a very loud
> voice, a
> > > shout almost, to
> > > > register a signal.
> > > >
> > > > So the 1/4" input is probably not the right
> > > choice if you're trying to
> > > > capture a natural ambience. It might be just
> > > right to record steam
> > > > locomotives, however!
> > > >
> > > > --oryoki
> > > >
> > > >
> > >
> >
> >
>
> > Sent from Yahoo! Mail - a smarter inbox
> http://uk.mail.yahoo.com
> >
> >
>
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