A7N8X + Coolermaster TAC-T01 Audio probs.

  • Thread starter Thread starter Nate Larsen
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Nate Larsen

Okay, so I'm stumped

I have a PC in the lovely Cooler Master TAC-T01 with an Asus A7N8X. I would
like to have the headphone "interrupt" the rear output. So, I looked around
a bit to see if I could find a solution, as the Front Panel seems to have a
different cable than it should.

Here is a link to a diagram of the cable.
http://www.coolermaster.com.br/product_common_images/ec9108cc875852fdc21522097966e5e1.jpg

Now, guessing, I put the Purple and Blue into the pegs on either side of the
NC, and the other two into the B-Line pegs.

However, only audio would come out from the front (it's actually a top
panel, but that's semantics at this point), any help would be greatly
appreciated.
 
"Nate said:
Okay, so I'm stumped

I have a PC in the lovely Cooler Master TAC-T01 with an Asus A7N8X. I would
like to have the headphone "interrupt" the rear output. So, I looked around
a bit to see if I could find a solution, as the Front Panel seems to have a
different cable than it should.

Here is a link to a diagram of the cable.
http://www.coolermaster.com.br/product_common_images/ec9108cc875852fdc21522097966e5e1.jpg

Now, guessing, I put the Purple and Blue into the pegs on either side of the
NC, and the other two into the B-Line pegs.

However, only audio would come out from the front (it's actually a top
panel, but that's semantics at this point), any help would be greatly
appreciated.
Click to expand...

There are probably four signals on there. Left_out, Right_out, Mic_in, GND.

This is not an "Intel Compatible" audio solution. The Coolermaster is missing
the two "return" signals. What this means is, if the Coolermaster front audio
is hooked to the 2x5, then the audio on the back will be disconnected.

Possible solutions are to buy an Asus J-Panel (drive bay output jacks) or
make your own audio cabling. You need audio jacks which have 5 tabs on them
("interrupting" 1/8" stereo jack). These have two extra tabs not on your
average Radio Shack type jack, and the two extra tabs are the return signals.
When a headset is plugged into one of these jacks, the return signals are
disconnected. When the headset is unplugged, the contacts close, and
the return signals then carry the left and right audio. You can buy a
jack like that from Digikey, for example.

http://rocky.digikey.com/WebLib/CUI Inc/Web data/SJ-3515.pdf

In fact, the Coolermaster documentation suggests that in fact the jacks
are the correct type (they have five pins), but the Coolermaster circuit
board shorts the return signals to their respective channels, so the
interrupting function cannot work. I don't own one of these cases, but
I would expect it would be a messy mod, to cut the copper tracks on
the circuit board the connectors are mounted on, and then add two return
wires for the audio.

In any case, this is a picture I drew in a previous posting, of what
a properly wired interrupting headphone jack would look like for the
front of a computer case:

-------------
| |
----------| Sound |
| | Chip |
| ------| |
| | | |
| | | |
Case Front Audio | | -------------
| |
| |
-------- 1 AGND | | Lime Lineout (Back)
| ______ 2 Line_out_R <------ |
- -| / ^ | AGND ----------+ (SLEEVE)
| | |--- 3 BLINE_OUT_R -------- | --------------------+ (RING)
| | |
| | |--- 4 BLINE_OUT_L -------- | ------------------+ (TIP)
| | v |
- -| \_____ 5 Line_out_L <----------

5="Tip", 2="Ring", 1="Sleeve" - the technical names of the three contacts on
a 1/8 inch diameter stereo plug.

HTH,
Paul
 
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