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>
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:
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 & thought I could just plug the mic in using a mono 1/4" to RCA adapter and get sound through the organs speakers & amp.I ran out of other amps & speakers as all mine are being used for other keyboards& 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>
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>
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