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herryawan 23rd May 2012 05:44 PM

mixer and crosstalk
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please help me ...

I'm making some audio circuits but there is a problem with the circuits..

so this story:
I'm making some of the simple mixer group. each of these mixers have no connection at all with the audio mixer other, only the power supply connections to connect all the mixer (+12 v, 0 v, -12 v) ..

each mixer is connected with some "pre amp + mic​​" and "power amplifier headset +" ..
I use the input-output Unbalanced and cable length between the pre amp with a mixer and mixer with power amplifier is more than 1 meter ....

My question is why there is a kind of crosstalk interference in the audio system?!?! audio on each mixer can be heard in another mixer ..
what is the solution to solve the problem?!?!

this attachment is scheme of the audio system that I created

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