static noise occurs when splitter is used at the green sound module output

Happy Hopping

Supreme [H]ardness
Joined
Jul 1, 2004
Messages
7,826
so at a friend's house, he has a yamaha integrated amplifier, as well as a pair of PC speaker from Altec Lansing. If we connect the plug from either one of these to the sound card green output, it plays fine.

But if we use a splitter, connect both of the above, and from the converter to the green output sound, there is a low hummmmm, some sort of static sound on top of the regular sound that is plays

the question is, how do you fix it?
 
so at a friend's house, he has a yamaha integrated amplifier, as well as a pair of PC speaker from Altec Lansing. If we connect the plug from either one of these to the sound card green output, it plays fine.

But if we use a splitter, connect both of the above, and from the converter to the green output sound, there is a low hummmmm, some sort of static sound on top of the regular sound that is plays

the question is, how do you fix it?
It's called a ground loop. You can try to fix it by using the same power outlet for all the devices or buy a galvanic separator to the RCA line. The hum comes from an AC current flowing between the devices, resulting from a slight difference in ground potential between the devices. You can get a galvanic separator from Parts Express etc. for a few bucks.
 
yeah its a ground loop. try a ferrite filter or a ground loop isolator. idk what a galvanic separator is...
 
same shit differenet pile, go cheap. all the are, typically, are ferrite filters/chokes in a box with a headphone in/out. if you have an old vga cable it might have a snap-on choke or if you have one to sacrifice you can cut one off.

1602378241191.png
 
Back
Top