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Subject: Re: how to get "Line IN" to work ...with a non "Line Level" device (ie. microphone)

Re: how to get "Line IN" to work ...with a non "Line Level" device (ie. microphone)

From: basslover <basslover_at_adelphia.net>
Date: 2005-05-26

Thanks for the additional food for thought!

----- Original Message -----
From: "BlueChip" <cs_bluechip@webtribe.net>
To: "Rockbox development" <rockbox@cool.haxx.se>
Sent: Wednesday, May 25, 2005 10:14 AM
Subject: Re: how to get "Line IN" to work ...with a non "Line Level" device
(ie. microphone)

> The MIC gain on a PC *is* a pre-amp stage ...the gain on the Jukebox is
> akin to the "MIC volume slider" under windows ...This "MIC volume slider"
> is the SECOND stage amplifier ...The MIC "+20db" thingie, depending on
your
> sound card, normally equates to a "tick box" which means 'pre-amp on/off'
>
> A MIC preamp can be, as I say, as simple as a couple of transistors (well,
> more literally ...and a couple of resistors and possibly a small capacitor
> to clean the sound up a bit), the complete circuit you could bodge
together
> at home with uber-basic soldering knowledge and NO circuit board at all
and
> it would fit on your baby finger nail - so portability is not an issue
> ...actually you will have more trouble carrying the tripple-A battery that
> you would need to power it ...thinks to self: wonder if you could build
one
> that would run off a hearing aid battery?
>
> Persoanlly, I put my (massively oversized) archos pre-amp in the front
> pocket of the Jukebox case and have cut a small hole so I can feed the
> cable direct into the main carry area ...then just plug my mic into the
> front pocket instead of direct to the jukebox.
>
> Hope that helps,
>
> BC
>
> PS. is "HTH" HOPE to help or HAPPY to help?
>
> >Thanks for the two quick responses.
> >
> >I do have the mike boost on XP on my computer. It says +20db. But on
the
> >Nomad Juke Box I also have the boost up (to+46db) and I still can't get
any
> >sound out of the mike.
> >
> >Any thoughts?
> >
> >About adding on an amplifier, I wanted a portable device that recorded
sound
> >well that I could carry around and dictate (or more accurately, rant)
into,
> >the recordings being slated for later podcast.
> >
> > >From what I'm reading, I'd have to carry around an amplifier as well.
Not
> >good.
> >
> >Any suggestions?
> >
> >
> >
> >
> >----- Original Message -----
> >From: "BlueChip" <cs_bluechip@webtribe.net>
> >To: "Rockbox development" <rockbox@cool.haxx.se>
> >Sent: Tuesday, May 24, 2005 3:50 PM
> >Subject: Re: how to get "Line IN" to work ...with a non "Line Level"
device
> >(ie. microphone)
> >
> >
> > > If you plug a MIC into a MIC socket (as per your PC) it will work - if
you
> > > plug a MIC into a LINE socket (PC or otherwise) - the MIC signal needs
to
> > > be amplified to LINE LEVEL ...there are loads of little amps to do
this on
> > > the market. The archos AAA powerered one is just a couple of
> > > transistors. This news archive holds "this one is cool"/"this one is
> >crap"
> > > reviews as and when people saw fit to review them :)
> > >
> > > BC
> > >
> > > >I have a good headset (1 ear + mike) from my cell phone. It has a
micro
> > > >plug. I bought an adapter that changes it to two separate mini
plugs. I
> > > >can put those two mini-plugs into the mike and headphone jacks of my
> > > >computer and they both work. It produces a rich, life-like voice
> >recording.
> > > >
> > > >But when I try that with the Recorder 20, only the earpiece works.
The
> > > >mike won't pic up any sound when plugged into the Line IN, no matter
what
> > > >input I select.
> > > >
> > > >I tried the same thing on a Nomad Jukebox, and same result.
> > > >
> > > >So is there some kind of wiring difference here that explains why the
> > > >setup works on the computer, but not the portable players?
> > > >
> > > >Could someone suggest how I could get this headset to work on the
> > > >R20? I'd really appreciate it!
> > > >
> > > >(If not, any suggestions for good headsets that would work on the R20
and
> > > >produce good, life-like voice recordings?)
> > > >
> > > >Thanks!!
> > > >_______________________________________________
> > > >http://cool.haxx.se/mailman/listinfo/rockbox
> > >
> > > _______________________________________________
> > > http://cool.haxx.se/mailman/listinfo/rockbox
> > >
> >
> >_______________________________________________
> >http://cool.haxx.se/mailman/listinfo/rockbox
>
> _______________________________________________
> http://cool.haxx.se/mailman/listinfo/rockbox
>

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Received on Thu May 26 01:27:13 2005


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