Loud speaker circuit for Laptop

[Matt89]

I have seen lot of circuits for creating small loudspeaker with Mic, I have also built one. But I want to replace MIC and feed the input from Laptop, means from 3.5 audio jack. But the problem is how to interface 3.5 mm jack to the circuit, it has 3 PIN while MIC has only two, so how to connect it? Can anyone help me.

[piratepaul]

It is kinda quite difficult to get my head round that, would you like to explain more clearly ...

Three wires suggests stereo... 1 earth and 2 channels.

You also need to match impedance.

Tell me more ...try to be clear.

Tar&stuff.

[Matt89]

It is kinda quite difficult to get my head round that, would you like to explain more clearly ...

Three wires suggests stereo... 1 earth and 2 channels.

You also need to match impedance.

Tell me more ...try to be clear.

Tar&stuff.

Thanks for reply, I just want to create a small loudspeaker for my laptop or mobile to integrate it with a Project.

[oram]

Hi Matt.

tell me if i understand correctly? You would like to change the input on your speaker from a mic input to a 3.5mm jack input?

[james4]

If Oram is getting you correctly and you want input from 3.5 mm jack, then this is the perfect link for you,
Small Loudspeaker for Computer
This also clarify your doubt of 2 or 3 pins in mic and 3.5 jack
Thanks