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Is powerlink symmetrical ?

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Market
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Market posted on Fri, Sep 1 2017 7:09 PM

we tried to use a pair of Lab3 as an amplified zone for a multiroom system a while ago. Ended up with a ground loop. 

 

Dropped the case.

 

in another setup, we had no trouble wiring four BeoLab something speakers to the pre-outs of a Denon receiver. 

but is powerlink symmetrical ? I see left right and ground pins. No left+/- 

 

how does the signal survive the long runs without catching hums ? Shielding ? Individual foils in Cat6 wiring ?

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beosound
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No, NL was/is symmetrical. But powerlink cable is schielded!

Market
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Market replied on Sun, Sep 17 2017 10:22 AM

And PL is 6.5V peak to peak, as opposed to line being 2V.

That's good for the Signal/Noise ratio. Now I wonder if any company makes a line to PL *active* converter, with the needed signal boost (otherwise the SNR is not so good, and max volume neither).

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