need to convert from MIC level to LINE-INPUT level

Discussion in 'Electronic Repair' started by wylbur37, May 18, 2007.

  1. wylbur37

    wylbur37 Guest

    Most portable cassette tape recorders have a MIC jack where you can
    plug in a simple microphone.

    Hpwever, some recording devices only have a LINE-INPUT jack (a.k.a.
    AUXILLARY INPUT jack).

    What I need is a little gizmo (essentially a pre-amplifier, I guess)
    that I can plug the microphone into and which in turn plugs into the
    LINE-INPUT jack.

    I'm not in a position right now to build one from scratch, so I need
    to either (a) buy one ready made or (b) buy one in kit form that I can
    assemble myself.

    Any recommendations on mail-order places that sell this?

    ....
     
    wylbur37, May 18, 2007
    #1
    1. Advertising

  2. wylbur37

    Chris Guest

    On May 18, 3:47 am, wylbur37 <> wrote:
    > Most portable cassette tape recorders have a MIC jack where you can
    > plug in a simple microphone.
    >
    > Hpwever, some recording devices only have a LINE-INPUT jack (a.k.a.
    > AUXILLARY INPUT jack).
    >
    > What I need is a little gizmo (essentially a pre-amplifier, I guess)
    > that I can plug the microphone into and which in turn plugs into the
    > LINE-INPUT jack.
    >
    > I'm not in a position right now to build one from scratch, so I need
    > to either (a) buy one ready made or (b) buy one in kit form that I can
    > assemble myself.
    >
    > Any recommendations on mail-order places that sell this?
    >
    > ...


    Hi, Wylbur. A preamp is exactly what you need. If you just want a
    good bare bones preamp circuit board kit, and you have a regulated
    10-30VDC voltage source available, you could do worse than the
    Velleman K1803 preamp kit available from Jameco for $8.95.

    http://www.vellemanusa.com/us/enu/product/view/?id=350480
    http://www.jameco.com

    If you're looking for something with an enclosure, you could try the
    Elenco K-46 Stereo Preamp for $19.95. You can find a distributor at
    their website:

    http://www.elenco.com/

    Remember to avoid using a low quality power supply with preamps. Get
    a regulated linear supply.

    Good luck
    Chris
     
    Chris, May 18, 2007
    #2
    1. Advertising

  3. wylbur37

    wylbur37 Guest

    On May 18, 4:23 am, Chris <> wrote:
    > Hi, Wylbur. A preamp is exactly what you need. If you just want a
    > good bare bones preamp circuit board kit, and you have a regulated
    > 10-30VDC voltage source available, you could do worse than the
    > Velleman K1803 preamp kit available from Jameco for $8.95.


    My apologies for forgetting to mention that the unit I'm looking for
    should also be compact (i.e., fits in a shirt pocket), and runs on
    either penlight or 9-volt batteries so you can take it on the road.

    ....
     
    wylbur37, May 18, 2007
    #3
  4. "wylbur37" <> wrote in message
    news:...
    > On May 18, 4:23 am, Chris <> wrote:
    >> Hi, Wylbur. A preamp is exactly what you need. If you just want a
    >> good bare bones preamp circuit board kit, and you have a regulated
    >> 10-30VDC voltage source available, you could do worse than the
    >> Velleman K1803 preamp kit available from Jameco for $8.95.

    >
    > My apologies for forgetting to mention that the unit I'm looking for
    > should also be compact (i.e., fits in a shirt pocket), and runs on
    > either penlight or 9-volt batteries so you can take it on the road.
    >


    The ONLY compact portable mic pre-amp to buy.
    http://www.sonicstudios.com/access.htm#micamp
     
    Rev. 11D Meow!, May 18, 2007
    #4
  5. "Rev. 11D Meow!" <> wrote in message
    news:...
    >
    > "wylbur37" <> wrote in message
    > news:...
    >> On May 18, 4:23 am, Chris <> wrote:
    >>> Hi, Wylbur. A preamp is exactly what you need. If you just want a
    >>> good bare bones preamp circuit board kit, and you have a regulated
    >>> 10-30VDC voltage source available, you could do worse than the
    >>> Velleman K1803 preamp kit available from Jameco for $8.95.

    >>
    >> My apologies for forgetting to mention that the unit I'm looking for
    >> should also be compact (i.e., fits in a shirt pocket), and runs on
    >> either penlight or 9-volt batteries so you can take it on the road.
    >>

    >
    > The ONLY compact portable mic pre-amp to buy.
    > http://www.sonicstudios.com/access.htm#micamp
    >
    >


    You have got to be kidding? 1000$ for about 20$ in electronic parts and
    maybe another 20-30 in manufacturing?

    That site is about the biggest scam site I have seen in a while. MAybe they
    meant yen instead of USD?
     
    Jon Slaughter, May 18, 2007
    #5
  6. wylbur37

    UCLAN Guest

    wylbur37 wrote:

    > Most portable cassette tape recorders have a MIC jack where you can
    > plug in a simple microphone.
    >
    > Hpwever, some recording devices only have a LINE-INPUT jack (a.k.a.
    > AUXILLARY INPUT jack).
    >
    > What I need is a little gizmo (essentially a pre-amplifier, I guess)
    > that I can plug the microphone into and which in turn plugs into the
    > LINE-INPUT jack.
    >
    > I'm not in a position right now to build one from scratch, so I need
    > to either (a) buy one ready made or (b) buy one in kit form that I can
    > assemble myself.
    >
    > Any recommendations on mail-order places that sell this?


    Over a hundred to choose from at:

    http://www.markertek.com/SearchProdList.asp?sort=prod&off=0

    I like:

    http://www.markertek.com/SearchProduct.asp?item=LTM-AKIT&off=33&sort=prod

    --
    GO BMW ORACLE! Bring "The Cup" back to the USA!
     
    UCLAN, May 18, 2007
    #6
  7. wylbur37

    Marra Guest

    Marra, May 19, 2007
    #7
  8. wylbur37

    Eeyore Guest

    Eeyore, May 19, 2007
    #8
  9. wylbur37

    Eeyore Guest

    wylbur37 wrote:

    > Most portable cassette tape recorders have a MIC jack where you can
    > plug in a simple microphone.
    >
    > Hpwever, some recording devices only have a LINE-INPUT jack (a.k.a.
    > AUXILLARY INPUT jack).
    >
    > What I need is a little gizmo (essentially a pre-amplifier, I guess)
    > that I can plug the microphone into and which in turn plugs into the
    > LINE-INPUT jack.
    >
    > I'm not in a position right now to build one from scratch, so I need
    > to either (a) buy one ready made or (b) buy one in kit form that I can
    > assemble myself.


    http://cgi.ebay.co.uk/3-5mm-3-5-mm-...33QQihZ016QQcategoryZ8258QQrdZ1QQcmdZViewItem
     
    Eeyore, May 19, 2007
    #9
  10. In article <>,
    Eeyore <> wrote:


    > Marra wrote:


    > > Sounds like the sort of thing Maplin would sell.


    > http://www.maplin.co.uk/module.aspx?ModuleNo=2921&doy=19m5


    > Replacing the 741 with something superior would be an idea.


    That would matter for a portable cassette recorder? ;-)

    > It's pricey for a
    > noisy op-amp and a few Rs and Cs but you do get a pcb.


    --
    *Half the people in the world are below average.

    Dave Plowman London SW
    To e-mail, change noise into sound.
     
    Dave Plowman (News), May 19, 2007
    #10
  11. wylbur37

    Eeyore Guest

    "Dave Plowman (News)" wrote:

    > Eeyore <> wrote:
    > > Marra wrote:

    >
    > > > Sounds like the sort of thing Maplin would sell.

    >
    > > http://www.maplin.co.uk/module.aspx?ModuleNo=2921&doy=19m5

    >
    > > Replacing the 741 with something superior would be an idea.

    >
    > That would matter for a portable cassette recorder? ;-)


    Actually he didn't mention the recording device itself.

    Graham
     
    Eeyore, May 19, 2007
    #11
  12. In article <>,
    Eeyore <> wrote:


    > "Dave Plowman (News)" wrote:


    > > Eeyore <> wrote:
    > > > Marra wrote:

    > >
    > > > > Sounds like the sort of thing Maplin would sell.

    > >
    > > > http://www.maplin.co.uk/module.aspx?ModuleNo=2921&doy=19m5

    > >
    > > > Replacing the 741 with something superior would be an idea.

    > >
    > > That would matter for a portable cassette recorder? ;-)


    > Actually he didn't mention the recording device itself.


    True - but the implication is it's for this sort of use. If you were
    aiming for a high quality recording from a mic you'd use an external mixer
    to provide phantom power etc as well. Very few high quality self contained
    recorders that have a mic input exist on the domestic market as there's
    little demand for them, and making that mic amp side to a high standard
    for practical use isn't as easy as it might seem.

    --
    * What do they call a coffee break at the Lipton Tea Company? *

    Dave Plowman London SW
    To e-mail, change noise into sound.
     
    Dave Plowman (News), May 19, 2007
    #12
  13. wylbur37

    CWatters Guest

    CWatters, May 19, 2007
    #13
  14. "Jon Slaughter" <> wrote in message
    news:8vk3i.22455$...
    >
    > "Rev. 11D Meow!" <> wrote in message
    > news:...
    >>
    >> "wylbur37" <> wrote in message
    >> news:...
    >>> On May 18, 4:23 am, Chris <> wrote:
    >>>> Hi, Wylbur. A preamp is exactly what you need. If you just want a
    >>>> good bare bones preamp circuit board kit, and you have a regulated
    >>>> 10-30VDC voltage source available, you could do worse than the
    >>>> Velleman K1803 preamp kit available from Jameco for $8.95.
    >>>
    >>> My apologies for forgetting to mention that the unit I'm looking for
    >>> should also be compact (i.e., fits in a shirt pocket), and runs on
    >>> either penlight or 9-volt batteries so you can take it on the road.
    >>>

    >>
    >> The ONLY compact portable mic pre-amp to buy.
    >> http://www.sonicstudios.com/access.htm#micamp
    >>
    >>

    >
    > You have got to be kidding? 1000$ for about 20$ in electronic parts and
    > maybe another 20-30 in manufacturing?
    >
    > That site is about the biggest scam site I have seen in a while. MAybe
    > they meant yen instead of USD?
    >
    >
    >


    Alec Baldwin You Ain't!
     
    Rev. 11D Meow!, May 21, 2007
    #14
  15. Rev. 11D Meow!, May 21, 2007
    #15
  16. wylbur37

    clifto Guest

    Rev. 11D Meow! wrote:
    > We're sorry, your browser must be set up to accept cookies.
    > If cookies are already enabled then you may begin shopping.


    This complaint, from someone whose recommendation required the Javascript
    virus installer?

    --
    We can't possibly imprison 300 million Americans for not paying their taxes,
    so let's grant all of them amnesty NOW!
     
    clifto, May 24, 2007
    #16
    1. Advertising

Want to reply to this thread or ask your own question?

It takes just 2 minutes to sign up (and it's free!). Just click the sign up button to choose a username and then you can ask your own questions on the forum.
Similar Threads
  1. M.Joshi

    Unbal. Line-level to Bal. Mic-level

    M.Joshi, Jul 27, 2006, in forum: Electronic Repair
    Replies:
    5
    Views:
    326
    M.Joshi
    Jul 31, 2006
  2. wylbur37

    need to convert from MIC level to LINE-INPUT level

    wylbur37, May 18, 2007, in forum: Electronic Basics
    Replies:
    15
    Views:
    761
    clifto
    May 24, 2007
  3. wylbur37

    need to convert from MIC level to LINE-INPUT level

    wylbur37, May 18, 2007, in forum: Electronic Equipment
    Replies:
    15
    Views:
    784
    clifto
    May 24, 2007
  4. wylbur37
    Replies:
    14
    Views:
    541
    clifto
    May 24, 2007
  5. ned

    How to get MIC level to LINE level?

    ned, Jul 18, 2004, in forum: Hobby Electronics
    Replies:
    4
    Views:
    221
    Allan
    Jul 23, 2004
Loading...

Share This Page