Subwoofer near computer - safe?

By Cosmin
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Grand Master

+Fahim S. MVC

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  • MVC
Posted

If it's magnetically shielded then it will be ok. Most not-cheap computer speaker systems usually are. However, this is only an issue if you have floppy or spinning platter hard disc drives. If you don't use floppy drives and only use SSDs then it doesn't matter at all.

Grand Master

+Fahim S. MVC

Posted
  • MVC
Posted

DVDs are not affected by magnets. Only floppy and hard disc drives.

 

If you only have SSD storage, it doesn't matter if it is magnetically shielded or not.

Grand Master

The Evil Overlord

Posted
Posted

Because nearly all pc *.1 subwoofer systems are these days, and you are running a BOSE, guaranteed it's shielded, my 10 year old Logitech is shielded and it has a monster of a subwoofer, sitting right next to my tower,

if you're still worried, get a steel can or something similar, if it isn't getting drawn to the sub enclosure, then it's shielded

 

Modern subs use low power wattage these days (hence why some say "Oh look I've got a 1000 watt 5.1 system" the reality is, it isn't and when I point this out they get all butthurt about it) and the magnets are tiny so even IF it wasn't (which it will be, regardless of my personal opinion of bose) the field is so small it would make no difference to a hard drive, as a mech drive is also encased in metal

  • +Mirumir and goretsky
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Grand Master

xendrome

Posted
Posted

On the product link, in the FAQ - https://www.bose.co.uk/en_gb/products/speakers/stereo_speakers/companion-50-multimedia-speaker-system.html

 

Yes, magnetic shielding prevents interference with CRT monitors.

 

-- Most Computer speakers are shielded, most Stereo system subs are not. Basic rule of thumb.

Grand Master

xendrome

Posted
Posted
  On 07/08/2016 at 12:11, jjkusaf said:

Even unshielded speaker magnets will not ruin/corrupt hard drives.  Also remember ... that within the hard drive itself ... there is one heck of a powerful rare earth magnet (Neodymium I believe).

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I can tell you, I had a friend of mine put a box fan right next to his full tower case, back in the day. It totally corrupted his 4 disk RAID5 array. But that was more then just a static magnet

Grand Master

Jim K Global Moderator

Posted
  • Global Moderator
Posted
  On 07/08/2016 at 12:43, xendrome said:

I can tell you, I had a friend of mine put a box fan right next to his full tower case, back in the day. It totally corrupted his 4 disk RAID5 array. But that was more then just a static magnet

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A box fan?  One of these?

 

box fan.jpg

 

Hate to be skeptical .. but I'm very skeptical that caused his data corruption.

Grand Master

xendrome

Posted
Posted
  On 07/08/2016 at 12:52, jjkusaf said:

A box fan?  One of these?

 

box fan.jpg

 

Hate to be skeptical .. but I'm very skeptical that caused his data corruption.

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Yes, it's like basically putting an brushed electromagnet right next to the drives. His RAID 5 setup was running for a  year, where the drives sat in the tower, put them directly next to the fan motor. the fan motor and the drive case were less then 1cm apart. Within about an hour the array was corrupted.

 

Pull the fan away, wiped out the RAID config, restored an image he had just made a few days before and everything was back up and running with no problems with the same drives. He was originally trying to "cool down" the tower :o

Grand Master

JustGeorge

Posted
Posted (edited)
  On 07/08/2016 at 10:50, The Evil Overlord said:

Here's mine

 

Yes I know, it needs cleaning down there :s 

 

 

IMAG0561.jpg

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Thats clean. My PC area....the whole room for that matter, looks like someone tossed a grenade in and walked away.

 

  • The Evil Overlord
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Grand Master

Astra.Xtreme

Posted
Posted (edited)
  On 07/08/2016 at 13:54, xendrome said:

Yes, it's like basically putting an brushed electromagnet right next to the drives. His RAID 5 setup was running for a  year, where the drives sat in the tower, put them directly next to the fan motor. the fan motor and the drive case were less then 1cm apart. Within about an hour the array was corrupted.

 

Pull the fan away, wiped out the RAID config, restored an image he had just made a few days before and everything was back up and running with no problems with the same drives. He was originally trying to "cool down" the tower :o

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The fans in your PC case also have magnetic brushes, and don't cause any issues.  Plus the magnets in the HDDs will be many many magnitudes stronger than the magnetic fields caused by a fan, so they won't be phased a bit.  It would take a very strong rare earth magnet stuck directly to the side of a HDD to have a chance at damaging it.

  • The Evil Overlord
  • Like 1
Grand Master

The Evil Overlord

Posted
Posted
  On 08/08/2016 at 17:58, papercut2008uk said:

i read that you should keep the sub atleast 30cm away from any other electronic device? 

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Depends on the sub, high power, unshielded (400 watts or greater, true RMS amplified), I'd agree, but PC subs are almost always low powered and shielded. Probably for legal potential reasons.

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