[Raspbian-devel] Audio

[Martin McCormick]

peter green <plugwash at p10link.net> writes:
> Assuming we are talking about a B+/A+/2B the jack is a four pole jack with
> audio on tip and first ring, ground on second ring and composite video on
> the sleeve.
> 
> 
> 
> Plugging in a standard audio plug is supposed to work but there may be
> breakthrough issues if the contact is poor.

	I can imagine. A 3-terminal audio plug has the left
channel on the tip, the right channel on the first ring and
Ground on the second ring or sleeve which means that one could
easily get the video signal mixed in there if the sleeve didn't
come up far enough to ground out that third ring.

That explains a lot. Thank you.

Martin