BeoSound Essence Hum

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mrjob Posted: Fri, Dec 16 2016 2:50 AM

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I recently hooked up a BeoSound Essence (1st gen) with my BeoLab Transmitter 1 to BeoLab 17 and it hums....  

Read somewhere in this forum that unshield cable should be the cause so I replaced the power link cable with AudioQuest Cinnamon -which is considerably a premium grade cable- and to my surprise, the hum becomes even more apparent!! 

When I connect my Mac mini directly to BeoLand Transmitter 1 there's no hum at all so I assume the culprit must be the BeoSound Essence. Any thoughts on how should I solve this problem? Thank you~

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Steve at Sounds Heavenly replied on Fri, Dec 16 2016 6:03 PM

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Hi Mrjob,

Yes, this sounds like a cabling problem!  Conventional RJ45 Cat cables (even so-called "high-end" brands) are not correctly shielded for use with B&O's audio systems or TVs.  They are intended for digital signals, ie. Ethernet.

To prevent the hum, you need correctly shielded RJ45 cables:-

http://soundsheavenly.com/powerlink-rj45-cat5-connection-models-from-2013/28-rj45-powerlink-compatible-shielded-cable-for-beolab-speakers-2013-and-newer.html

Kind regards, Steve.

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mrjob replied on Fri, Dec 16 2016 10:51 PM

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Steve, thank you. Surprised to hear B&O system requires different shielding. Will check your cable out!