• My speakers are buzzing all of the time
    9 replies, posted
So, 6 months ago I bought some new speakers for my room. My dad has lent me his old receiver, so I'm using my speakers alongside an old receiver. They work fine when I'm using them to watch TV, but when I plug them into my computer, they make this annoying buzzing sound all of the time. They will playback sound fine, it'll just have this buzzing sound on top. So I thought that it might be the cable, so I try another cable. Same thing. I then go ahead and plug the speakers into my laptop and the speakers work fine. Conclusion so far: It's not the speakers and it's not the cable -> must be the on board sound card on my motherboard. So I let it go for a while. But I recently purchased a new motherboard alongside a new CPU and some RAM, yet with this new soundcard, AND a fresh installation of windows, the problem persists. What could be wrong with my computer since it won't playback sounds nicely with my new motherboard? It seems stupid that my fucking laptop can use the speakers fine, but not my gaming rig.. [editline]20th December 2011[/editline] Motherboard is P8Z68-vpro And I'm running windows 7 64bit (but so is my laptop)
Many motherboards have electrical noise on the audio lines because they aren't shielded properly. Also make sure your mic is muted by default, it may be echoing the noise the mic port pics up through the speakers, even if no mic is attached.
[QUOTE=Metalcastr;33822928]Many motherboards have electrical noise on the audio lines because they aren't shielded properly. Also make sure your mic is muted by default, it may be echoing the noise the mic port pics up through the speakers, even if no mic is attached.[/QUOTE] Two completely different boards having the same exact problem is very rare. It sounds more like the speakers have a grounding problem (ground hum.) Ground hums can be caused by the motherboard not being mounted properly and shorting to the case, or some case accessory is defective (like front panel USB) and grounding the board. It can also be caused by a defective power supply that isn't grounded properly (from being defective or because the PSU is from a shit manufacturer.)
I have a corsair power supply, I don't remember the full name, but corsair should be good enough, right? I'll check to see if the microphone is off. What can I do about the grounding problems, if those are the cause of my problem? I've assembled the computer my self, so it's possible that something is not mounted properly. And I do have some old, old, OLD USB ports connected to the motherboard. (They provide me with 2 extra ports, and I thought that it wouldn't cause any problems. So I will try removing those USB ports. Thank you for your help :)
I've disabled everything that could possibly be recording on my computer. I've removed those old USB ports. My conclusion is that it has to be a grounding problem. Is there anything I can do to make it better?
It could be a ground loop? What a ground loop is, how to test for it and how to cure it: [url]http://www.audioholics.com/tweaks/connecting-your-system/ground-loops-eliminating-system-hum-and-buzz[/url] Sometimes just moving where things are plugged into the mains can fix the issue (Putting the computer and amplifier onto the same power strip so they share a common ground that is closer together for example)
[QUOTE=Tezzanator92;33842015]It could be a ground loop? What a ground loop is, how to test for it and how to cure it: [url]http://www.audioholics.com/tweaks/connecting-your-system/ground-loops-eliminating-system-hum-and-buzz[/url] Sometimes just moving where things are plugged into the mains can fix the issue (Putting the computer and amplifier onto the same power strip so they share a common ground that is closer together for example)[/QUOTE] Thank you! I will look into it right away :)
[QUOTE=bohb;33824750]Two completely different boards having the same exact problem is very rare. It sounds more like the speakers have a grounding problem (ground hum.) Ground hums can be caused by the motherboard not being mounted properly and shorting to the case, or some case accessory is defective (like front panel USB) and grounding the board. It can also be caused by a defective power supply that isn't grounded properly (from being defective or because the PSU is from a shit manufacturer.)[/QUOTE] I'm talking about noise from other bus lines when there is processing going on. Every motherboard I've listened to onboard sound on has had that problem. Only installing a sound card seems to be a solution.
Don't connect it to the front panel audio source whatever you do they have shit shielding almost always.
[QUOTE=Metalcastr;33869796]I'm talking about noise from other bus lines when there is processing going on. Every motherboard I've listened to onboard sound on has had that problem. Only installing a sound card seems to be a solution.[/QUOTE] You can try isolating the sound traces with strips of foil :downs: you'll have to do something to prevent it from shorting out the board though.
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