50Hz on alu part of speker body- why ?

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marexy Posted: Mon, Jan 9 2017 1:40 PM

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When a finger-palm of my hand is drawn across speaker alu part i feel 50Hz electrical frequency  on my BL 12.3
What is wrong?
The same may be felt in the BL 4000 on aluminum part of the speaker.

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Seanie_230 replied on Mon, Jan 9 2017 2:06 PM

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Hello there

I get this on every piece of B&o I own every time I touch the ALU i get a buzz, for me its worst on my BLGW and zaps me more than my speakers or TV

If you find a solution please let me know.

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CB replied on Mon, Jan 9 2017 2:27 PM

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Hello,

I think it's the same as what was described here

For me, it's a grounding lack/ issue...

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marexy replied on Mon, Jan 9 2017 3:42 PM

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Hi

I'm know some stuff ..and when i connect all devices in line on  phaze and null to correct position it's 50% better :)

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marexy replied on Tue, Jan 10 2017 7:00 AM

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Try to reverse each of main cable of the BL speaker one of the time. phaze- null than revers ....null phaze ..

At the same time it has to be connected to B&O device via PW cable.

i do not know why ..sometimes it wotk's for me.

It has to be some grounding issue :(

Nobody till now can explain to me why ..or how to fix it :(

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Starbug replied on Tue, Jan 10 2017 7:16 AM

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Hello i read in the Installation Guide for the Beosound Moment about the same problem. There is a workaround for grounding over the Powerlink socket. I don't know if it is also possible for other products. But this prevent the ticking feeling. Sorry for my englisch. It is not my nativ speeking.

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marexy replied on Tue, Jan 10 2017 7:30 AM

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Hi

Thanks ..it's the same problem i think :(

 is these it ?

http://www.bang-olufsen-rivierenland.nl/wp-content/uploads/2015/04/30472829.pdf

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Starbug replied on Tue, Jan 10 2017 7:45 AM

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Yes this is the workaround i was talking about.

Jonas