I am getting buzzing when I use my stereo amp to try to amplify my computer
sound.
The buzzing occurs only when I try to amplify the sound from the computer
plugged in via a mini stereo plug. I get no noise when I directly connect
headphones to the PC. It occurs in any jack I plug the amp into, on my sound
card (Turtle Beach Santa Cruz) or on my onboard audio, and it occurs when
the computer is off and even unplugged from the wall. Can someone please
tell me what's going on here?? Thanks.

Asterix

"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify my
computer sound.
The buzzing occurs only when I try to amplify the sound from the
computer plugged in via a mini stereo plug. I get no noise when I
directly connect headphones to the PC. It occurs in any jack I plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's going on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

Strangely, it dissapeared by the time I tested my PC this morning. Just in
case, I installed a surge protecter specifically for the monitor and
computer that has a 50db noise filter.

"Arny Krueger" wrote in message
...
"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify my
computer sound.
The buzzing occurs only when I try to amplify the sound from the
computer plugged in via a mini stereo plug. I get no noise when I
directly connect headphones to the PC. It occurs in any jack I plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's going on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

Ah ha! It's the light in the other room. When the light is on, the buzzing
is there, when it's off, the buzzing is basically gone. How do I correct
this? Should I try installing the surge protecter with noise filter on the
light?

"Asterix" wrote in message
...
Strangely, it dissapeared by the time I tested my PC this morning. Just in
case, I installed a surge protecter specifically for the monitor and
computer that has a 50db noise filter.

"Arny Krueger" wrote in message
...
"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify my
computer sound.
The buzzing occurs only when I try to amplify the sound from the
computer plugged in via a mini stereo plug. I get no noise when I
directly connect headphones to the PC. It occurs in any jack I plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's going on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

And it's only when the light is dimmed... when it's on full, no buzzing.

"Asterix" wrote in message
...
Ah ha! It's the light in the other room. When the light is on, the buzzing
is there, when it's off, the buzzing is basically gone. How do I correct
this? Should I try installing the surge protecter with noise filter on the
light?

"Asterix" wrote in message
...
Strangely, it dissapeared by the time I tested my PC this morning. Just
in
case, I installed a surge protecter specifically for the monitor and
computer that has a 50db noise filter.

"Arny Krueger" wrote in message
...
"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify my
computer sound.
The buzzing occurs only when I try to amplify the sound from the
computer plugged in via a mini stereo plug. I get no noise when I
directly connect headphones to the PC. It occurs in any jack I plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's going on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

On Thu, 01 Jul 2004 10:20:55 GMT, "Asterix"
wrote:

And it's only when the light is dimmed... when it's on full, no buzzing.

If you have a different outlet available for your computer, try that
first. If that outlet is on a different circuit, it will be isolated
from the light switch. You *might* get lucky, but then again, you
might not. You should check before considering more exotic solutions.

This might be a more expensive solution that you'd like to consider,
but go to this page:

http://www.ethanwiner.com/dimmers.html

Read down about halfway to read about variable transformers.

You might try this page as well.

http://www.smarthome.com/solution42.html

Contact them with your particulars and they might be able to help you.

Good luck!

"Asterix" wrote in message
. ..
Ah ha! It's the light in the other room. When the light is on, the buzzing
is there, when it's off, the buzzing is basically gone. How do I correct
this? Should I try installing the surge protecter with noise filter on the
light?

"Asterix" wrote in message
...
Strangely, it dissapeared by the time I tested my PC this morning. Just
in
case, I installed a surge protecter specifically for the monitor and
computer that has a 50db noise filter.

"Arny Krueger" wrote in message
...
"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify my
computer sound.
The buzzing occurs only when I try to amplify the sound from the
computer plugged in via a mini stereo plug. I get no noise when I
directly connect headphones to the PC. It occurs in any jack I plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's going on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

Now the stupid light is off and so is everything else in the house besides
the computer equipment and stereo equipment, and I'm getting some other new
buzzing sound.

"dave weil" wrote in message
...
On Thu, 01 Jul 2004 10:20:55 GMT, "Asterix"
wrote:

And it's only when the light is dimmed... when it's on full, no buzzing.

If you have a different outlet available for your computer, try that
first. If that outlet is on a different circuit, it will be isolated
from the light switch. You *might* get lucky, but then again, you
might not. You should check before considering more exotic solutions.

This might be a more expensive solution that you'd like to consider,
but go to this page:

http://www.ethanwiner.com/dimmers.html

Read down about halfway to read about variable transformers.

You might try this page as well.

http://www.smarthome.com/solution42.html

Contact them with your particulars and they might be able to help you.

Good luck!

"Asterix" wrote in message
. ..
Ah ha! It's the light in the other room. When the light is on, the
buzzing
is there, when it's off, the buzzing is basically gone. How do I
correct
this? Should I try installing the surge protecter with noise filter on
the
light?

"Asterix" wrote in message
...
Strangely, it dissapeared by the time I tested my PC this morning.
Just
in
case, I installed a surge protecter specifically for the monitor and
computer that has a 50db noise filter.

"Arny Krueger" wrote in message
...
"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify
my
computer sound.
The buzzing occurs only when I try to amplify the sound from the
computer plugged in via a mini stereo plug. I get no noise when I
directly connect headphones to the PC. It occurs in any jack I
plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's going
on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

And now it's gone altogether.

"Asterix" wrote in message
...
Now the stupid light is off and so is everything else in the house besides
the computer equipment and stereo equipment, and I'm getting some other
new
buzzing sound.

"dave weil" wrote in message
...
On Thu, 01 Jul 2004 10:20:55 GMT, "Asterix"
wrote:

And it's only when the light is dimmed... when it's on full, no
buzzing.

If you have a different outlet available for your computer, try that
first. If that outlet is on a different circuit, it will be isolated
from the light switch. You *might* get lucky, but then again, you
might not. You should check before considering more exotic solutions.

This might be a more expensive solution that you'd like to consider,
but go to this page:

http://www.ethanwiner.com/dimmers.html

Read down about halfway to read about variable transformers.

You might try this page as well.

http://www.smarthome.com/solution42.html

Contact them with your particulars and they might be able to help you.

Good luck!

"Asterix" wrote in message
. ..
Ah ha! It's the light in the other room. When the light is on, the
buzzing
is there, when it's off, the buzzing is basically gone. How do I
correct
this? Should I try installing the surge protecter with noise filter
on
the
light?

"Asterix" wrote in message
...
Strangely, it dissapeared by the time I tested my PC this morning.
Just
in
case, I installed a surge protecter specifically for the monitor
and
computer that has a 50db noise filter.

"Arny Krueger" wrote in message
...
"Asterix" wrote in message

I am getting buzzing when I use my stereo amp to try to amplify
my
computer sound.
The buzzing occurs only when I try to amplify the sound from
the
computer plugged in via a mini stereo plug. I get no noise when
I
directly connect headphones to the PC. It occurs in any jack I
plug
the amp into, on my sound card (Turtle Beach Santa Cruz) or on
my
onboard audio, and it occurs when the computer is off and even
unplugged from the wall. Can someone please tell me what's
going
on
here?? Thanks.

No doubt, a ground loop.

Here are some references to read up on ground loops:

http://www.smr-home-theatre.org/Grou.../addendum.html

http://www.epanorama.net/documents/g...oop/index.html

Asterix wrote:
And it's only when the light is dimmed... when it's on full, no
buzzing.

Many dimmers are high RF noise emitters, typically the RF noise they
produce is received by the signal wire (which can act as an antenna)
between the PC and amp. I fought the same types of noise for many
years with no success but finally got rid of it by using a digital
optical cable between PC and amp.