General Forum

Re: Link speakers electrified?

Dave — Tue, 05 Feb 2008 21:24:06 GMT

Every B&O product i own has this trait, if you can't sense it from touching it, then rub your ear against a metal part of your B&O.

Nothing to worry about, cozza and solderon29 has it in one, double insulation

Re: Link speakers electrified?

cozza — Tue, 05 Feb 2008 16:03:21 GMT

Wearing a grounded wrist strap won't help, I'm afraid. (Nor for that matter a grounded dog collar!). This is not a build up of static electricity, more of an electrical leakage current. You can feel the same thing on a Beosound 3 when it is on the charger.

Re: Link speakers electrified?

Jandyt — Tue, 05 Feb 2008 15:49:35 GMT

Perhaps Daniel, you could mount some sort of bar on the ceiling through the whole house. Your good lady could be tethered to it via a loop a bit like a curtain rail. If she wore some kind of collar with a sticky pad at the back like on an electro-encepholagraph, she could Hoover the whole house and remain at ease.

Andy T.

Re: Link speakers electrified?

Daniel — Tue, 05 Feb 2008 07:25:32 GMT

Medogsfat:

Here you are Daniel - buy your wife one of these beauties
Chris.

It doesn´t say how long the cable to the clip is. I need one very long or she have to move the clip as I let her walk around in the house, mostly for cleaning.

(Heaven forbid she ever read this )

Re: Link speakers electrified?

Medogsfat — Tue, 05 Feb 2008 06:54:45 GMT

Here you are Daniel - buy your wife one of these beauties

Chris.

Re: Link speakers electrified?

solderon29 — Tue, 05 Feb 2008 05:48:39 GMT

Cozza spotted it!

Yes indeed,all the metalwork is grounded to chassis to prevent hum pickup,but due to the double insulation system used(virtual ground?)non of the equipment is actually grounded to earth.

A standing voltage can develop between the equipment and earth,sometimes as much as 50v,quite enough to cause a tingle when touched.

If a signal distribution system is connected for radio/tv signals,this can make things worse,and can cause odd problems with remote control operation.

Sky+ boxes are rather prone to this

It's probably common in display set up's,as they use multiple outlets,and of course have synthetic carpeting/dry air etc which exascerbates the effect.

Nick

Re: Link speakers electrified?

gorissek — Tue, 05 Feb 2008 03:55:05 GMT

It's exactly the same here on my MacBook Pro. I'm sure there is someone here who can explain this.

Re: Link speakers electrified?

Dafinity — Tue, 05 Feb 2008 02:54:13 GMT

I have felt this a few times in amny products, most recently my iPhone.

When docked and charging from mains, it has a kind of electric vibration when touched and more so when hand moved along it.

Would be intrested to know why,

Cheers

Russ

Re: Link speakers electrified?

Daniel — Tue, 05 Feb 2008 02:13:27 GMT

Thanks Cozza.

The double insulation make sense. Without it the speaker had to have an earth connection and that would have removed the potential in the metal parts.

Re: Link speakers electrified?

cozza — Tue, 05 Feb 2008 00:55:27 GMT

If you measure from the metal panel to mains earth with an AC voltmeter there is probably a voltage potential present. This will be caused by a switched mode power supply on the link system. The "tingle" is often felt with double insulated equipment with switched mode power supplies and is nothing to be concerned about.

Re: Link speakers electrified?

Daniel — Mon, 04 Feb 2008 16:28:05 GMT

Good to hear I´m not alone!

Isn´t there a ground cable in the masterlink, meaning all covers are connected? So if one component is vibrating, the others can do it too? I haven´t tried it with the whole system disconnected from the power net. But that must stop the vibrations even with the master link cable connected.

I think I´m getting paranoid, but I get the same feeling from the touch panel on one of my LC1 (and not from the other one)

Re: Link speakers electrified?

joeyboygolf — Mon, 04 Feb 2008 16:14:56 GMT

Puncher:

joeyboygolf:
I've noticed this too. The metal panels on 9000/9300/9500 series and the metal on BS9000 and the vertical stand. More of a vibration than anything. Can't explain it though unless it comes from the mains transformer??
My thoughts too although Daniel claims that connecting power or Masterlink (either without the other) causes the phenomena to return - I can't see why Masterlink alone would cause this.

Agreed. ML is indeed a puzzle.

Re: Link speakers electrified?

Puncher — Mon, 04 Feb 2008 16:10:37 GMT

joeyboygolf:
I've noticed this too. The metal panels on 9000/9300/9500 series and the metal on BS9000 and the vertical stand. More of a vibration than anything. Can't explain it though unless it comes from the mains transformer??

My thoughts too although Daniel claims that connecting power or Masterlink (either without the other) causes the phenomena to return - I can't see why Masterlink alone would cause this.

Re: Link speakers electrified?

joeyboygolf — Mon, 04 Feb 2008 16:04:33 GMT

solderon29:
"Good vibrations" perchance?

Next time I'm about to lose a sale because of this "phenenomenom" I'll quote you then Nick!

Re: Link speakers electrified?

mobeyone — Mon, 04 Feb 2008 15:49:08 GMT

My 4500 also does this.