Connecting monophonic audio signal to soundcard line input?

[John Doe]

On the plug, ground is the larger of the three metal pieces, is that
correct?

I would like to connect a monophonic audio signal to the line input of
my soundcard.

Is it OK to leave one of the two stereo contacts left/right open? Or
should the monophonic audio signal be connected directly to both?

The physical connection/soldering stuff is not a problem.

Thank you.

 

[Tom MacIntyre]

On Wed, 26 Jan 2005 23:09:17 GMT, John Doe
<jdoe@usenet.is.the.real.thing> wrote:

On the plug, ground is the larger of the three metal pieces, is that
correct?

Yes...closest to the base of the plug.

I would like to connect a monophonic audio signal to the line input of
my soundcard.

Is it OK to leave one of the two stereo contacts left/right open? Or
should the monophonic audio signal be connected directly to both?

It is usually okay to connect one output to two inputs, but the
reverse is wrong, unless buffering is used. Some minor impedance
matching issues may be encountered.

Tom

The physical connection/soldering stuff is not a problem.

Thank you.

 

[peterken]

"John Doe" <jdoe@usenet.is.the.real.thing> wrote in message
news:Xns95EAAE85C5F8Fwisdomfolly@151.164.30.42...

On the plug, ground is the larger of the three metal pieces, is that
correct?

I would like to connect a monophonic audio signal to the line input of
my soundcard.

Is it OK to leave one of the two stereo contacts left/right open? Or
should the monophonic audio signal be connected directly to both?

The physical connection/soldering stuff is not a problem.

Thank you.

ground is the larger metal part

it's ok to leave one signal contact open, BUT this might induce low
frequency noise so best is ground the "open" contact

however and just for comfort reasons it might be best to connect both to the
signal since all speakers are operational then