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Irritating noise coming through speakers
liamoforange
post Jul 29 2012, 20:18
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Posts: 24
Joined: 26-October 06
Member No.: 36794



Hi,

I am getting this annoying noise through my speakers. It's like there are crickets in my computer trying to send me subliminal messages in morse code.

A sample is attached.

1. It appears once the PC powers up.
2. It appears irregardless of what sound card is used either onboard sound, or external sound card
3. It appears irregardless of what slot external sound card is installed in
4. All cables are shielded.
5. I am running a cable to an external pre-amp and then to my amp.
6. When cable from PC is disconnected the pre-amp is dead silent, when attached the noise interferes with all functions. i.e. phono
7. When PC is off, no line noise on any channel in pre-amp.
8. Sound appears when using a different source, i.e. a receiver instead of pre and power amp.
9. Have swapped out multiple cables, even had a custom shielded cable made to run from PC to pre.
10. All drivers are installed properly and up to date.

Asus P5Q-deluxe
X-Fi Platinum sound card
Win 7 x64
4gb ram

Any and all help to troubleshoot and eliminate this problem will be greatly appreciated.
Attached File(s)
Attached File  Memo1.m4a ( 99.42K ) Number of downloads: 452
 
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[JAZ]
post Jul 30 2012, 08:57
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From: Catalunya(Spain)
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I am unsure if this applies to you, but my solution on this case was a very simple one (In my case, all the equipment was connected to the same socket, which did not have a ground cable. You say you have two independent lines).

Basically, i connected a cable from the PC to the ground of the integrated amp. (I.e. from one screw of the back of the desktop tower to the ground screw in the integrated amp). I believe you might already have one from the phono turntable to it, since for phono it is even more important.

This reduced the ground loop a lot in my case.

This post has been edited by [JAZ]: Jul 30 2012, 08:58
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