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Unshielded speakers near computer

In my never-ending quest for half-decent computer audio, I'm finally just about ready to take the plunge and do it properly; with home theater components. This decision is spurred by the fact that I have two perfectly good Paradigm Atom bookshelf speakers sitting around doing nothing, and my suspicion that, even as fairly low-end at least in Paradigm's line bookshelf speakers, they'll still destroy anything that Logitech or Edifier sells. However, the Atoms aren't magnetically shielded. I'm wondering how much this matters with modern PCs.


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No they do not. Classic CRT monitors fired electron beams onto phosphor dots on the back of the glass which made them glow to produce the light which you can see.

The strength of the beam defined the brightness and chemicals in the phosphor set the colour. However the beam is just a fine point and on its own would just produce a single dot on the screen.

The beam scans across the screen turning on and off as required because of two magnetic coils on either side of the screen and the scan moves vertically because of another pair of magnetic coils top and bottom. An unshielded magnet close to a CRT screen would add its field to the scan coils of the screen and distort the beams leading to the beam missing its target and corrupt the display.

If left in position the field would eventually magnetise the chassis and leave a permanent distortion. All voice coil speakers work basically the same way and this is why speakers sold for computer use were always described as "shielded".

LCD screens do not use any magnetic principles to create the image so do not suffer any effects from an external field. Older LCDs use cold cathode lamps to provide the backlight and in theory a very strong magnetic field can distort the plasma in the tube so might cause some shadowing while the field is present but residual magnetism is very small in comparison so there would be no permanent effects. LED backlights don't even have this problem. A strong field that is oscillating very fast may cause a problem but this would not apply to a magnet.

One mistake often made is the assumption that flat panels do not suffer "burn in" often seen on CRTs. This is not the case, if the same image is displayed for a long time it will partially permanently set the crystals and produce a shadow on the screen. It does happen so quickly on LCD screens but it can happen.

Plasma displays large flat panel TVs have a sensitivity to burn in somewhere between the two. Was this reply helpful? Yes No. Sorry this didn't help. Thanks for your feedback.

Choose where you want to search below Search Search the Community. Search the community and support articles Windows Windows 7 Search Community member. Kousik Adhikary. I came across this question recently and want expert views on this one. Do Speakers really affect LED monitors in anyway? This thread is locked. You can follow the question or vote as helpful, but you cannot reply to this thread.

I have the same question Report abuse. Details required :. Cancel Submit. HairyFool Independent Advisor. All voice coil speakers work basically the same way and this is why speakers sold for computer use were always described as "shielded" LCD screens do not use any magnetic principles to create the image so do not suffer any effects from an external field.

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Hum in speakers when I plug in to computer

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drives work by magnetism on the platters, so anything that is magnetic(like unshielded speakers) as at least worth wondering about.

Hello, I'm worried about the effects of magnetism from unshielded speakers


Personal question here, I just built a brand new PC for myself finally! I also have some brand new bookshelf speakers I picked up for this build that are also placed on my desk. If I put my computer on the desk, it will literally be right next to the right speaker. The speakers are unshielded. Is this a bad idea? I do have a spinning HDD in this build and was worried in general about any weird EMI I may encounter that might cause me strange issues. From what I've read, it seems like it should be OK, but most opinions were about computers and speakers that were a couple of inches apart. Mine are literally like right next to each other, almost touching. Maybe I am paranoid, but I thought I would see what others say, I don't want to fry my new rig!

Any worries with non-magnetically-shielded speakers and a computer

unshielded speakers near computer

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Can Magnets Really Mess Up Your Computer?


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Unshielded speakers near the HDD

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An unshielded magnet close to a CRT screen would add its field to the basically the same way and this is why speakers sold for computer.

How to Eliminate the Hum From a Computer Audio Output

By Cosmin , August 7, in Hardware Hangout. In my actual configuration I want to be sure if it's safe to place the subwoofer near the computer.. If it's magnetically shielded then it will be ok. Most not-cheap computer speaker systems usually are.

No they do not. Classic CRT monitors fired electron beams onto phosphor dots on the back of the glass which made them glow to produce the light which you can see. The strength of the beam defined the brightness and chemicals in the phosphor set the colour. However the beam is just a fine point and on its own would just produce a single dot on the screen. The beam scans across the screen turning on and off as required because of two magnetic coils on either side of the screen and the scan moves vertically because of another pair of magnetic coils top and bottom.

Last Updated: March 29, To create this article, volunteer authors worked to edit and improve it over time.

I'm a huge fan of headphones , as some of you might know. However, nothing can beat the visceral experience of having a good set of powerful speakers. Most people choose to go with PC speakers , but for those who want a bit more fidelity and punch, home-theater bookshelf speakers are the way to go. There's only one issue: almost all home-theater speakers are unshielded. But is this really a problem?

Log in or Sign up. The only thing I would be concerned about is the hard drive, and that shouldn't be too big of an issue as long as it's not an uber-powerful magnet and you don't rub it back and forth over the hard drive. A UPS should not be an issue.




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  1. Grisham

    This idea is just about

  2. Iulian

    Oh! Unfortunately!

  3. Wardell

    In it something is. Thank you for the information, now I will not admit such a mistake.