wolfwood
New member
I'd like to wire the audio output from a Pacman board to a stereo jack. I do realize that the audio output should probably be attenuated if it is connected to an amplified speaker. Since Pacman is mono audio, is there any reason why I shouldn't connect SPEAKER+ through an audio attention circuit to both the left and right channels of a 3.5mm stereo jack?
In SuperGun audio attention circuits I've seen, the common pin of the stereo jack is usually connected to ground. In that case, SPEAKER- does not appear to be connected. When I look at the schematic for a Pacman board, SPEAKER- has circuitry behind it, so it feels strange not utilizing it. What role does SPEAKER- play in the audio output from the board, and is it OK to leave it unconnected? Would it be more appropriate for SPEAKER- to be connected to the common pin of the stereo jack?
In SuperGun audio attention circuits I've seen, the common pin of the stereo jack is usually connected to ground. In that case, SPEAKER- does not appear to be connected. When I look at the schematic for a Pacman board, SPEAKER- has circuitry behind it, so it feels strange not utilizing it. What role does SPEAKER- play in the audio output from the board, and is it OK to leave it unconnected? Would it be more appropriate for SPEAKER- to be connected to the common pin of the stereo jack?
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