I thought we'd look at using a microphone as a speaker today - a relatively simple trick that was shown to me about two months ago. If I'm honest I did not really think much of my mate when he was explaining this to me - in matter of fact I thought he was taking the piss.
Using a microphone as a speaker does work though - seriously. Now before we start should point out that you will get much better results by using a dynamic mic for this experiment. Condenser mics need an outboard power source. Another piece of equipment you will need is an XLR to jack or Phono. XLR's are your traditional balanced mic cables - one end female and one end male ( you know the ones - 3 prong and 3 holed ). But in this case you need the XLR to go to a normal jack, like a guitar cable.
Now here comes the magic!!!!! Simply plug the jack end of the mic cable into a jack output. Try an old fashioned amp first - like a consumer Hi Fi system. You can also try an output on a synthesizer keyboard ( MIDI Keyboard ). The mic will act as a speaker! It's not a bad little speaker either. Unfortunately it will be a mono speaker with the two stereo images merged into one inside the mic but it will work as a speaker.
I was blown away when I was first shown it. We used a Shure Sm58 and it did a really impressive job. Not the loudest of speakers but a speaker that was certainly clean sounding enough in it's own right. So there we go - using a microphone as a speaker! It's probably best not to use a mic you've paid over $300 for in this experiment just to be on the safe side. But by all means use any of the cheaper dynamic mics you own - it will work although the volume will differ from source to source.
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