Multiple Microphone Driver Circuit

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djnik1362

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Hi
I am using a Microphone Preamplifier circuit for a single microphone.
I can use "standard condenser" or "electret condenser" microphone.

I need to use 6 microphones with that circuit by parallelizing these 6 microphones
and connecting these microphones to the Preamplifier inputs. (Preamplifier has inputs for one microphone)

I am using 6 microphones because i need to catch sound from a closed volume .
i put each of these microphones into the volume to cover whole volume.

Is this is a good idea or i must use another circuit ?

Thanks for your support.
 

I made a boardroom telephone conferencing system using 8 electret mics connected in parallel. It worked pretty well but picked up a fair amount of background sounds and echoes. The Jfet inside each electret mic is normally powered through a 10k resistor so the resistor I used had a resistance low enough (1.2k) to power all the mics.

Another boardroom telephone conferencing system I built used many electret mics and a mic mixer that switched on only the one mic that had the highest sound level and it worked very well.
 

Thanks . Very Useful .
 

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