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Dell noise when AC power plugged in
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UIU
IsraTrance Full Member
Started Topics :
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Posted : Dec 13, 2004 12:19
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Anyone here has Dell and has this problem? I've read that it is problem with grounding. I have read that a three to two prong wall outlet adapter will eliminate the problem, but it is a bit dangerous. Can anyone tell me the dangers associated with this? Anyone found a cheap and safe solution?
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Trip-
IsraTrance Team
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101
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3239
Posted : Dec 13, 2004 13:51
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I had electrical hum sound also after connecting my console, monitors, synth and computer to the same outlet.
To solve this I ungrounded the console - hum was over.
It is dangerous and you should check with somebody who did this with Dell.
 Crackling universes dive into their own neverending crackle...
AgalactiA |
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Spindrift
Spindrift
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1560
Posted : Dec 13, 2004 16:31
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It is due to a ground loop and there is two ways of dealing with it.
The hard and correct way of sanitizing the power and finding the source of the loop.
It requires expert knowledge about electricity and even then it's not easy to do.
The other is the illegal, dangerous and standard practice of dissconnecting the earth 
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mubali
Mubali
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71
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2219
Posted : Dec 14, 2004 02:23
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I have had this same issue but have not found how to correct it yet either...
An Eagle may soar, but Weasels don't get sucked into jet engines. |
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orange
Fat Data
Started Topics :
154
Posts :
3918
Posted : Dec 14, 2004 17:50
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i have the same issue with my laptop when is connected to the main power plug has a huge electrical and radio like noise
what is this shit i cant find any sollution for it i eliminate the half of it connecting it to a ups but its still there but not so loud
any one has a solution please help i cant make music if specialy i turn on the monitors ooohhh god its awefull
but there is no problem with the desktop pc
orange
http://www.landmark-recordings.com/
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UIU
IsraTrance Full Member
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Posted : Dec 14, 2004 20:26
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Has anyone tried anything like this? It looks more safe that the three to two prong adapter.
http://www.zzounds.com/cat--Hum-Eliminators--2757
That Ebtech HUMX Voltage Hum Filter, is it a three to two prong adapter, or is it different?
Thank god my problem is not that big. The peculiar thing is that when I turn the volume up from RME's virtual mixer the noise remains the same. But when I turn the speakers volume directly it becomes louder.
Does this thing get recorded as well? |
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Hayez
Started Topics :
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393
Posted : Dec 15, 2004 01:39
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you can get hum in your audio path, not just because of a ground loop. it can happen when the audio cables are low quality and live near the power cables. just to make sure you don't have that, use good quality shilded cables, preferably XLR. make sure you have all your rig hooked to the same outlet.
to read more about it go to:
http://emusician.com/mag/emusic_good_connections/index.html |
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Dharma Lab
Started Topics :
8
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342
Posted : Dec 15, 2004 20:25
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The danger of using a 3 to 2 prong adater is that your case is no longer grounded. If for any reason a power lead come in contact with the casing of your device, it will transfer electricity...meaning you touch it & your getting fried. Normally, this doesnt hapen, but if something was damaged or noced around, it could happen.
I also believe it maes your component unable to ground a static charge (socks on carpet anyone). Static electricity can damage your components over time, meaning it may not effect it now, but each time it happens, it damages it a little bit.
The hum eliminators works- I have one. European AC power works on a different frequency I've been told, so you may want to chec if you need something different. The hum eliminator gets rid of the 60 HZ ground loop. It can be a pain, since each audio channel jacked in needs one! I tend to just run on battery most of the time, and will plug it in with the 3 to 2 prong adapter if I have no alternative.
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Spindrift
Spindrift
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1560
Posted : Dec 15, 2004 20:30
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Although also a bit dodgy, but still better then just disconnecting the ground can be to provide separate ground for the unearthed machine.
That would mean to connect a separate cable to some grounded metal object (usually a radiator, but you could of course stick a metal pole in the ground yourself to connect to).
Again, dodgy and illegal and if you can sort it with hum-eliminators that would be very good of course.
I sure would not like to have a permanently un-earthed chassi for my puter.
(``·.¸(``·.¸(``·.¸¸.·`´)¸.·`´)¸.·`´)
« .....www.ResonantEarth.com..... »
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UIU
IsraTrance Full Member
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Posted : Jan 30, 2005 23:53
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HEY! I FIXED IT! (after buying a hum eliminator that doesn't work, reading about 300 articles, sending e-mails to several shops that sell audio equipment)
Seems like I wasn't using balnced cables after all. I bought two and once I plugged them, problem solved!
TIP:HOW TO CHECK IF YOUR CABLES ARE BALANCED OR UNBALANCED.
On the connector (the part of the cable that goes in the soundcard) you will see that it has either one or two black (blue, green yellow or any other colour) lines.
IF IT HAS ONE LINE IT IS UNBALANCED
IF IT HAS TWO LINES IT IS BALANCED
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UIU
IsraTrance Full Member
Started Topics :
88
Posts :
238
Posted : Jan 31, 2005 19:31
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Hey! I've just noticed that the volume went up A LOT with balanced cables!! Why is this? |
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Hayez
Started Topics :
8
Posts :
393
Posted : Jan 31, 2005 19:48
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Usally when using balanced output you'll get a line level of +4db which is the profossional standard. Using unbalanced will get you -10db which is the consumer standard.
"a new art came into my mind which only you can create, the Art of Noises, the logical consequence of your marvelous innovations." Russolo, 1913 |
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