Quote:
Originally Posted by Schertler
No, my forum-name Schertler is absolutely randomly selected and I am not a Company staff...... however, dynamic microphones and moving-coil transducers are the two different terms of the one particular category..... my story with little dynamic capsules has begun accidentally by discovering at home the one with 150 Ohm coil-impedance, then a quick-check-test......
Dynamic microphones and loudspeakers are both the same technology, so the ear-plug dynamic capsule built as a miniature loudspeaker can be used as a mic too, but it must be first tested for a real output and frequency range.....
Have you ever seen how the Schertler DYN-G looks internally ?
No matter how the system of magnet, membrane and coil is assembled, it all is called the electromagnetic induction and would work anyway but the quality will depend on to the used materials and similarities with the actual dynamic microphone.
The frequency range of this little dynamic capsule was my initial concern, however, the result truly is phenomenal, firmly attached to the guitar's top and/or bridge-plate it has almost the same Highs as the condenser Oktava microphone !!!
I have never seen anyone having installed such a mics' combination into one acoustics, and one might note that using one ECM mic in the guitar is absolutely enough for a live use, I agree, my idea was not about mounting two mics in one guitar but about using miniature dynamic ear-phone capsule as an alternative mic-pickup to grotty piezo sound and/or magnetic pickup...... however, due to a tiny sizes and easy installation I got them both mounted in my new instrument, in finally, and got different microphone voices that is very pleasant.....
Thanks for reading!
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Not implying that you are related to Shertler of the transducer company liniage, just that the idea is similar.
I did try using a small miniature speaker as a soundboard transducer many years ago. I glued a small weight over the voice coil attachment so the cone would resist movement as the body of the speaker reacted to soundboard vibration. It worked, but I found other methods of using piezo materials resulted in a higher output level with better response than the "reverse microphone" that I created.
Your mic elements sound like they work better than what I achieved.
There is a manufacturer who markets a surface mount motion sensor that is also used as a soundboard transducer. The new Fender Acoustisonic uses this PC board component as an input to it's trigger for the built-in sound modeling in the guitar,