Berea, OH
First off, you can't just throw an amp in there for the headphones, depending where you tap for the headphones jack. The audio is already amplified, and you can damage the amp or even the game.
(Topic ID: 228779)
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Quoted from Gornkleschnitzer:If new ideas are still accepted - some headphone jacks have switches at the back to sense when a headset is plugged in. You could use that switch (perhaps in conjunction with a small relay if necessary, since it's probably open when unplugged) to automatically shut off the external speakers when using the jack.
Yes you could do that as well. In the first figure, the plug is not inserted, so the terminal 10 and 11 switches are closed routing the audio to the speaker. In the second figure, the plug is inserted which opens the 10 and 11 contacts thus routing the audio to the headphones.
9165 (resized).pngQuoted from darcangeloel:So if I put a switch on this wire here (The middle lug on the pot) that should turn the speakers off and allow me to still use my headphones right? I think that is what returns to the audio board for volume control IE if its disconnected then the speakers wouldn't make any noise? [quoted image]
Correct. The middle lug (black wire) returns signal from the pot to CPU 1J16-2, where it gets amplified and sent to the speakers. The red is the signal coming FROM the CPU to the pot.
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