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how to make a speaker a microphone and a speaker?

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  • how to make a speaker a microphone and a speaker?


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Answer #1 | 05/01 2014 12:57
You have to add a transmitter circuit that will integrate into the receiver circuit. Unless you have a degree in electronics . . . This is not a job for a novice.
Answer #2 | 05/01 2014 14:39
You're in over your head.
Answer #3 | 05/01 2014 18:38
You are better off buying one. Rather than trying to build one that you have no idea to do.
Answer #4 | 05/01 2014 21:20
Speakers and dynamic microphones are basically the same in concept, and the intercom systems that were installed in home back in the 1960's and 1970's did indeed use the speaker as the microphone as well. However those systems used rather complex switching at the master unit (typically installed in the kitchen). Some stations had push to talk back to the master unit, some had push to talk to answer the speaker at the door, and some simply allowed eavesdropping at the master unit. Try searching for an old NuTone unit from the 1970's. They were the best overall and they have to exist on the used market.
Answer #5 | 06/01 2014 13:32
It's much easier to buy a cheap 2-way radio system than make your own, please believe me. If you really want to do it though, look on the web, or try Youtube, there will be lots of circuits and tips.

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