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Need help with audio front panel


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#1 crpowell67

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Posted 30 September 2011 - 12:17 PM

I am trying to get my mic to work on the front panel I found the wire it has three single connectors marked Mic-in, Mic Power and Ground I know where the front panel audio header is but not sure which pins to connect them to I have added a link that has the audio header and what each pin is from the intel site

http://www.intel.com/support/motherboards/desktop/sb/cs-015851.htm

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#2 MrBruce1959

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Posted 30 September 2011 - 02:10 PM

Hello and welcome to Bleeping Computer.

Depending whether you have the High Definition audio or the AC'97 audio, I will tell you which pins you need.

For Intel® High Definition Front Panel Audio

Pin #1 is the left microphone hot wire.
Pin #2 is the microphone ground.
Pin #3 is the right microphone hot wire.

For AC97 Front Panel Audio

Pin #1 is BIASed with Pin #3 and Pin #2 and #4 is ground.

Because they are BIASed, it does not matter which HOT audio wire you connect to which pin as long as you use pins 1 and 3 for audio hot, usually this is a white and red wire, the shield uncoated wire is ground.

Bruce.

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#3 crpowell67

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Posted 30 September 2011 - 03:00 PM

I am not sure which I have but I only found 3 wires mic-in, mic power and ground so I am figureing I would hook mic-in and mic power to pin 1&3 and ground to pin 2

#4 MrBruce1959

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Posted 01 October 2011 - 08:44 AM

What I assume you are trying to do is hook up the motherboard nine audio pins to a computer case wire harness is this correct?

If I am correct, what labeling do you see on each of the case wire plugs?

They would have labeling such as HDD, Speaker ect.

Now perhaps your case may have some labeling such as micr+ and micl+ and so on.

When reference is given to power and audio, this is often used when special external audio related devices are attached to the motherboard.

It depends on the type of device.

Such devices can be a synthesizer keyboard which simulates an electronic organ/piano and those devices depend solely on power coming from the motherboard, such as how USB devices are powered.

If you can supply me with the model of the motherboard, I can obtain a copy of the motherboard manual and determine exactly what those 9 pins are intended for, besides my assuming what they are for.


If your motherboard has AC'97 Front Panel Audio, it is likely you have a RealTek audio chip built into your motherboard.

Once I know your exact motherboard make and model number, I will have a better idea what we are working with here.

Bruce.

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