x7200 near subwoofer

I am setting up my new birou in autocad, and because i cannot in any way extend the cables of my logitech z cinema speakers i am considering on placing the subwoofer on the table rather than beneath it, lets say maybe near the laptop.

Isn't that not advisable because the subwoofer is not magneticaly shielded and the magnetic fields will intefere with the proper functioning of the laptop , in time, breaking the laptop ?

Or perhaps there is a way to extend the cables ?
Someone posted a similar question on logitechforums and here is the answer from a logitech guy:

Any help, opinions, advices ?

 

I have run a few setups with my subwoofer right next to my laptop (mostly because they had the controls to change bass boost and whatnot on the back of them) and I have never suffered any electromagnetic-based failures. In the same area, you can cover your laptop with magnets, and, in most cases, you'd be highly unlikely to cause any lasting damage, let alone any actual damage (you may end up scratching some paint or whatnot).

In either regard, though, I would advise you set up a good multi-step backup solution (specifically having at least two levels of backups) just to be sure. But, of course, you should have done, or be doing that right now, anyways, no matter your setup.

Good luck!

 

What do you mean by 2 levels of backup ?

The reason for this post is that there is a myth in my head that in a 2.1 speaker setup system, only the satellites are shielded and the subwoofer is not because there is too big of a magnet inside it to be succesfully shielded.

Such interference can be seen affecting a cathode ray tube monitor, where the colors change during such affliction.
Such a monitor would need to have a degauss function, to degauss "away" the "damage".

I really do not know in what way can the subwoofer affect an electronic system, like, say a laptop.

 

You shouldn't have any problems having computers near a subwoofer, perhaps the only problem would've been back when we were all on CRTs which were extremely sensitive to magnetic fields however these days the effect should all be negligible.


The only thing I would be wary of is if you were to place your laptop directly on top of a big strong magnet and use it with a spinning hard drive for any long period of time. Otherwise I've had 200lb pulling force magnets near computers and surprisingly they operate just fine (though CRT's will bleed from 15 feet away)

 

Pardon the terminology. I mean you should have two layers of backups, such as you backup your data to an external USB disk (running full on going versioned backups of your data), and then entire cycle that USB disk once a week, if you have two primary locations that aren't too close to each other (at least a few miles) run backups at both locations, pay for an off site backup solution, or find a way to make sure that your data is not all stored in a single place. Of course, this is merely my baseline for file security, and it's assuming that you have a set of files that matter to you. It has no bearing on the issue at hand, but it's surely one of the first steps a person should take to secure their data set, especially if you're worried about any interference from a magnet.

I would assume that to be the case, in the same way that the magnets in subwoofers for automotive audio are not shielded, from what little I know of the topic. Honestly though, you need to put a screw driver within a few inches of a massive subwoofer to have it start affecting it enough that you can notice (my brother has a big 15 inch subwoofer in his car, so I got to play around with the massive magnet it uses). The home audio system subwoofer magnets are surely going to have almost no affect past an inch, which likely is taken into account by the housing.

Yes, as I've done, myself, on many older TVs and displays when I wanted to add some color to my life. I'm fairly sure it is not "damaging" them, as I've surely done it well over a thousand times to my thirteen inch CRT TV, and it still looks about as crappy as it's always looked, with no color balancing issues or whatnot.

I'd guess if you went and places the subwoofer's rear end right next to a CRT display, you may see some affect. Thankfully, magnetic fields are already so weak that they have almost no affect extremely quickly. Your mileage will vary, but you should see more or less the same thing.

Well, to bring it out to the logical extreme, it's merely a magnetic field, so assuming you were running a subwoofer that was able to produce a magnetic field that had a decent affect past an inch or two, you could see data scrambling on your magnetic-based hard drive if it was within the field. You'd also likely see any magnetic parts binding slightly, which could cause issues in the case of fan bearings, perhaps.

But that'd be a true logical extreme, and, frankly, I can't see it causing any sort of interference with the rest of the system until you get up to a level of magnetism that's just absurd. So, honestly, I think you're fine, mate. Just do good backups in case I'm wrong, ok?

Oh, and the thing you ARE going to want to think about more clearly will actually be the constant shock to your computer, which is FAR FAR more of a killer. You'll want to isolate your computer so it does not get shocked with each low kick, otherwise your hard drive is going to likely freak out and think it's falling, and lock the read/write head. It would also jostle screws loose, shake apart the panels and display, etc. I'd suggest making sure to isolate the subwoofer with some sort of padding to make sure your desk does not vibrate your laptop to pieces. Good luck!

 

Haha yeah actually if there was anything to be a bit more concerned would be if you were blasting your subwoofer loud enough to cause constant pounding vibrations, which unless you literally have your laptop resting on the subwoofer shouldn't be a problem.

More important I think people should try to get a good surge protector that could help reduce line noise a bit as your power source can affect the electronics in any device you plugin.

 

Agreed. The only real danger to having the subwoofer next to the laptop is going to be from vibrations (and even then, only a real issue if you've got a mechanical HDD instead of an SSD). You aren't likely to experience any real EMI issues. The reverse may be true though, in that the laptop could have an adverse effect on the speaker setup (if you've ever had a cell phone near a speaker and heard the buzzing sound from the speakers, you'll know what I mean). Even then, this would only be likely if you had a cellular or other high powered connection in the laptop. Wifi alone isn't strong enough to cause that interference as it only runs on fractions of a watt of power over the air.

 

Thanks for all the feedback guys. Really helpfull.

To summ it up, if i have mechanical drives, i should keep them a bit away, if possible, or at least try to minimizes the vibrations theyre be gettin..

Oh, damn, where are those 2TB 50 euros a piece, MLC SSDs ?

 

I would suggest that ANYTHING that is more than a single part. For example: Video cables that connect your display to your mainboard could loosen through the vibrations. The chance that it'll loosen anywhere enough to actually even be tightened, let alone fall out, is so low that thinking about it makes me want to make up a new extremely small percentage chance to describe it. But, either way: Try and isolate the subwoofer from the desk to make it so the only thing vibrating is the subwoofer.

They're in the trunk of my flying car, which is parked at my moon house.