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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 28 Nov 2011, 10:48
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You only need the ground lift between the laptop and the wall to resolve this problem about 99% of the time.

The EbTech adapter should work with an adapter - but will likely need you to drop the voltage to 110V.

Another possibility would be to contact them and ask if they can provide a New Zealand version or can refer you to someone.

http://www.ebtechaudio.com/contactus.html

Alternatively, try using ground loop isolators on the conectiv inputs and outputs.

Here's a web page I put up because this comes up quite often.
https://sites.google.com/a/celebratethe ... roundlift/


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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 29 Nov 2011, 18:47
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Thanks mate, was thinking the same that the standard HumX is what I need, just wasn't sure about the pulg style/voltage...I've emailed EB Tech to see if they make one in the NZ/Aust style plug and voltage, or if it would work using adaptors.

Cheers


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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 14 Dec 2011, 01:25
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Just a bump to say thanks for all the help...the humble old $10 per unit Response RCA Ground Loop Isolators as normally used on car stereo systems does the trick! Bye bye ugly squealy noise

Cheers all! :D


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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 17 Dec 2011, 06:50
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http://www.conrad.de/ce/de/product/3792 ... tor-GL-205

i have this between output master mixer cabel, which are going to my speakers....it solves the prob mostly like 90%, sometimes i have it anyway...so i wll give it try with an other usb port, nerver thought bout that


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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 17 Dec 2011, 06:51
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in english it must be ground loop isolater or something


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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 17 Dec 2011, 10:54
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massesschleifen is ground loop in English. So, yes, it is. It's like the Ground Loop Isolator from Radio Shack.


FYI - the ground loop isolator has to go between the two devices that are creating the loop. Once the noise enters the audio channel, putting a ground loop isolator later in the chain does nothing.

That means, if the loop is between your sound card the mixer, if you put it between the mixer and the amp/speakers then it won't fix the problem. More oft than not, the problem is between the sound card connected to the laptop by USB and the mixer. I'd use isolators on all the outputs from the sound card and the problem will be resolved nearly 100% of the time.

As an alternative, you can use a HumX by EbTech to resolve the issue at the laptop itself. They make them for US voltages but not for those outside the US. But as was mentioned earlier - drop them a line and see if they can make something up or if it will work with an adapter.


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Post subject: Re: How do you get rid of the hard drive noise?
PostPosted: 19 Dec 2011, 14:26
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^ Yeah, I dropped them a line, they only make to US 110 Volts and didn't say whether it would work with adaptors, instead they recommended one of their other isolator devices, but it was 1/4 inch headphone style jack inputs, so again, as turntables are RCA, that would require extra cables...RCA -> 1/4 inch x 4 just to plug it in!

Thought it would be worth a try to get an RCA Loop Isolator and bob was uncle, it works...have it plugged in between the TORQ soundcard and the mixer and the noise is gone...YAY! :D


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