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  • Hooking up a mic to a Hammond's RCA audio jack



    Has any one here hooked up a mic to a Hammond's RCA audio jack on
    the pedal box? I tried it on my M3 with an RCA to 1/4" pin adapter but
    can't get hardly any volume from the mic which I find strange for a 20
    W amp (which I think the M3 has). Would I need a preamp to get the mic
    volume to equal the organs's?</p>


    Bob

    </p>
    http://www.petty-larceny-band.com/



    Yamaha DGX-300
    1959 Hammond M3
    1961 Hammond A101
    VB3 with M Audio Axiom
    1975 Leslie 130 upgraded with V21 top rotor, tube amp, wood lower rotor
    1972 Leslie 825 upgraded with top rotor, etc.
    2011 Neo Ventilator
    Casio WK-7500
    Yamaha P50m Module
    Roland VR-09
    Casio PX-5S

  • #2
    Re: Hooking up a mic to a Hammond's RCA audio jack

    You would need a preamp to get enough drive.

    Comment


    • #3
      Re: Hooking up a mic to a Hammond's RCA audio jack



      [quote user="bossbandbob"] Has any one here hooked up a mic to a Hammond's RCA audio jack on the pedal box? I tried it on my M3 with an RCA to 1/4" pin adapter but can't get hardly any volume from the mic which I find strange for a 20 W amp (which I think the M3 has). Would I need a preamp to get the mic volume to equal the organs's?[/quote]</P>


      Bob,</P>


      I'm a little confused. Doesn't a microphone take actual sound from the air and convert it into electronic pulses through the use of a diaphragm and a magnet? To connect to a Hammond RCA audio jack, wouldn't you only need a patch cord with the requisite RCA connector? Red=right cord, and Left=white cord.</P>


      I was also confused about what you were using for output--the organ's speakers, other speakers, headphones, or connecting directly into a recording device? </P>


      Concerning the volume issue, I use a cheap Behringer mixer (less than $100.00 US) to handle the sound, then take the outputs from the mixer. Works like a charm. You can also get them with effects (FX) built in.</P>


      Not sure I've helped, but was confused by your post. I hope I've helped in some way.</P>


      Michael</P>
      Way too many organs to list, but I do have 5 Allens:
      • MOS-2 Model 505-B / ADC-4300-DK / ADC-5400 / ADC-6000 (Symphony) / ADC-8000DKC
      • Lowrey Heritage (DSO-1)
      • 11 Pump Organs, 1 Pipe Organ & 7 Pianos

      Comment


      • #4
        Re: Hooking up a mic to a Hammond's RCA audio jack



        Mike,</p>

        I just wanted to hook up my mic to my M3 &amp; thought I could just plug the mic in using a mono 1/4" to RCA adapter and get sound through the organs speakers &amp; amp.I ran out of other amps &amp; speakers as all mine are being used for other keyboards&amp; mics ,etc. </p>

        Turned out I started quite the discussion when I accidentally double posted this on this thread: http://organforum.com/forums/thread/82172.aspx</p>

        turns out that Fred's conclusion was the correct one!</p>

        Bob</p>
        http://www.petty-larceny-band.com/



        Yamaha DGX-300
        1959 Hammond M3
        1961 Hammond A101
        VB3 with M Audio Axiom
        1975 Leslie 130 upgraded with V21 top rotor, tube amp, wood lower rotor
        1972 Leslie 825 upgraded with top rotor, etc.
        2011 Neo Ventilator
        Casio WK-7500
        Yamaha P50m Module
        Roland VR-09
        Casio PX-5S

        Comment


        • #5
          Re: Hooking up a mic to a Hammond's RCA audio jack



          One needs a little bit of electrical engineering to understand that a mic may not be able to drive any old RCA jack input.</P>


          The jack on a Hammond probably requires about 3 volts peak to peak to get full volume.</P>


          A typical microphone of the dynamic (magnet/voicecoil) type produces very low output of a few millivolts (thousandths of a volt). Normally these are connected to low impedance balanced line that go to a preamp or mixer with a preamp.</P>


          The voltage requirement of the high impedance input of the Hammond to the low impedance mic is analagous to connecting a 100 watt, 120 volt bulb across your 12 volt car battery... not much happens.</P>


          One could also use a step-up transformer with, say a ratio, of 1:200 or so</P>

          Comment

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