2 speakers (one as mic other as speaker)

[DirectXXX]

Im a begineer. I have two 8ohm 0.25 speakers. I want to use one as a mic and other as a speaker. I have a transformer which can supply AC voltage of 4, 8 or

12 volts from room powersupply.

So how can i do this SIMPLY???

 

[john1]

Hi DirectXXX,

It is OK to use a speaker as a mic.
You will need an amplifier.

Connect one of your speakers to the amplifier's
input, and the other to the amplifier's output.

Amplifiers run on DC.

Regards, John

 

[DirectXXX]

i know about amplifier. But i want to do some low level. I heared you can use transistor in this case with a higher voltage supply. But i dont know which transistor. and where should i make connection with three pins of transistor.

 

[Jaw174]

look up simple audio amplifyers. they can help

 

[pebe]

This link may help. It is very simple. Although designed for an electret mike, an 8ohm speaker would probably be OK.

**broken link removed**

 

[DirectXXX]

Simple for you. But i will try it as soon as i get required components.