[mcp6453[_2_]]

Is tying the left and right outputs of a computer sound card together a
problem?

http://goo.gl/s1Brc

[Phil W]

"mcp6453":

Is tying the left and right outputs of a computer sound card together
a problem?

http://goo.gl/s1Brc

read this
http://www.rane.com/note109.html

and check out some of the other Rane notes (Support - Library) for useful
general information.


hope that helps,
Phil

[mcp6453[_2_]]

On 5/1/2011 7:31 PM, Phil W wrote:
"mcp6453":

Is tying the left and right outputs of a computer sound card together
a problem?

http://goo.gl/s1Brc

read this
http://www.rane.com/note109.html

and check out some of the other Rane notes (Support - Library) for useful
general information.


hope that helps,
Phil

Les and Phil, thanks for the article. I totally understand the problem.
My question probably centers more around whether computer manufacturers
have already included a resistor in series with the outputs to prevent
damage when the outputs are shorted or combined. Any thoughts?

[Scott Dorsey]

mcp6453 wrote:
Les and Phil, thanks for the article. I totally understand the problem.
My question probably centers more around whether computer manufacturers
have already included a resistor in series with the outputs to prevent
damage when the outputs are shorted or combined. Any thoughts?

Even if there is no damage, there will be distortion. My thought is to
make up a couple cables with 22 ohm series resistors in them. 3.5mm TRS
on one end, XLR on the other. Breakout resistors inside the XLR since
there's more room in there.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Les Cargill[_4_]]

mcp6453 wrote:
Is tying the left and right outputs of a computer sound card together a
problem?

http://goo.gl/s1Brc



It can be.

http://www.rane.com/note109.html

--
Les Cargill

[Les Cargill[_4_]]

mcp6453 wrote:
On 5/1/2011 7:31 PM, Phil W wrote:
"mcp6453":

Is tying the left and right outputs of a computer sound card together
a problem?

http://goo.gl/s1Brc

read this
http://www.rane.com/note109.html

and check out some of the other Rane notes (Support - Library) for
useful
general information.


hope that helps,
Phil

Les and Phil, thanks for the article. I totally understand the problem.

Ach! My bad, then "

My question probably centers more around whether computer manufacturers
have already included a resistor in series with the outputs to prevent
damage when the outputs are shorted or combined. Any thoughts?


I would not assume that. A VOM measurement might be of value, but
it might not be.

--
Les

[Peter Larsen[_3_]]

mcp6453 wrote:

Les and Phil, thanks for the article. I totally understand the
problem. My question probably centers more around whether computer
manufacturers have already included a resistor in series with the
outputs to prevent damage when the outputs are shorted or combined.
Any thoughts?

Standard design for a headphone output is series resistors in the hundreds
ohm range, it would surprise me greatly if it wasn't adhered to, but it is
also standard design for a stereo-mono y-cord to include series resistors in
the 05. to 1 kohm range.

Kind regards

Peter Larsen

[Mike Rivers]

On 5/1/2011 6:58 PM, mcp6453 wrote:
Is tying the left and right outputs of a computer sound card
together a problem?

Usually not.

--
"Today's production equipment is IT based and cannot be
operated without a passing knowledge of computing, although
it seems that it can be operated without a passing knowledge
of audio." - John Watkinson

http://mikeriversaudio.wordpress.com - useful and
interesting audio stuff

[alex]

Il 02/05/2011 0.58, mcp6453 ha scritto:
Is tying the left and right outputs of a computer sound card together a
problem?

http://goo.gl/s1Brc

yes, other than the "rane" suggestion, consider to monoing "digitally"
and use just one output instead of 2.

[Arny Krueger]

"mcp6453" wrote in message

On 5/1/2011 7:31 PM, Phil W wrote:
"mcp6453":

Is tying the left and right outputs of a computer sound
card together a problem?

http://goo.gl/s1Brc

read this
http://www.rane.com/note109.html

and check out some of the other Rane notes (Support - Library) for
useful general information.


hope that helps,
Phil

Les and Phil, thanks for the article. I totally
understand the problem. My question probably centers more
around whether computer manufacturers have already
included a resistor in series with the outputs to prevent
damage when the outputs are shorted or combined. Any
thoughts?

It's pretty standard to put a "building out" resistor in series with the
off-board output of any op amp.

Value - 22, 75, 220, 620 ohms.

It is also pretty standard to include some kind of short-circuit protection.

That all said, the 100% safe (or as close to that as you can get) solution
for Y-cables includes some series resistors of its own. I usually use 620
ohm resistors.