Home Entertaiment Set Up

[jlr]

Hi Eveybody

I have recently bought myself a Boston Acoustics Two Tower Speakers and Sub Woofer. Looking at my current set up from the left to right, is my Left Speaker, Plasma Cabinet Stand (with plasma and amplifier), Right Speaker, PC Tower Case, and Subwoofer.

Now, recently my PC has been throwing random blue screens. I think it was hard drive related, as watching movies, it would freeze, and when going into my computer, it would freeze dead. Last night I opened the case, and after switching the pc back on, the pc ran, not detecting my HDD. I moved the pc, about 40 cm away from the speakers Then I switched off and on the pc, and it ran without any problems.

My theory is that maybe, the magnetic and/or the vibration of the speakers, are screwing up the pc. Any thoughts?

 

[Mr_Bee]

The fans are getting affected by something and overheating or memory malfunctions is causing the PC to misbehave. This problems may be caused by vibrations or magnetism.

 

[Chevron]

Keep magnets far away from PC.

 

[stevenv]

Surely the TV would be affected by magnets as well, speakers should be shielded. Or are plasmas not affected by magnets, never tested my LCD personally

 

[HAL 9000]

The Electro-Magnetic Field (EMF) generated by Speakers (especially large Hi-Fi Speakers and Sub-Woofers) will have an effect on any other devices such as a PC or a conventional Cathode Ray Tube (CRT) Television Set, as the magnetic field generated by the speakers is detectable up to about 40 - 60 cms from them, depending on the size of the magnets in the speakers.

The solution is to make sure that your PC is located at LEAST about 2 metres from ANY speakers (or amplfiers)to avoid the issues you are experiencing.

 

[HAL 9000]

Electromagnetic Interference (EMI)

All electronic devices give off electromagnetic emissions. This is radiation that is a byproduct of electrical or magnetic activity. Unfortunately, the emissions from one device can interfere with other devices, causing potential problems.

Interference can lead to data loss, picture quality degradation on monitors, and other problems with your PC, or problems with other devices such as television sets and radios. These are generally categorized as electromagnetic interference or EMI problems.

There are actually two different issues here: EMI emissions by the PC, and EMI emissions received by the PC.

PCs generally do not cause very much interference with other devices; they are required by the Federal Communications Commission (FCC) to be certified as Class B devices.

This certification is used to show that the PC conforms to standards that limit the amount of EMI that a PC can produce. The only catch to this is that you have to keep the cover on the PC. This is one reason why the cover is always made from metal. (Keeping the cover on is also an important part of ensuring proper ventilation).

PCs can be affected by electromagnetic interference from other devices, in two major ways.

One is direct effects through proximity with other devices; another is electrical interference over the power lines.

Most PCs generally do not have many problems with EMI, but those that do can cause incredible frustrating to their owners.

There are several things that you can do to avoid or at least reduce EMI if you think it is affecting your PCs:

Physical Isolation: Devices that emit electromagnetic radiation should be kept a reasonable distance from your PC, peripherals and media. This includes television sets, radios, lights, kitchen appliances, and stereo speakers (the ones designed for use with PCs are generally shielded and are much less of an issue).

Use Dedicated Circuits: Many office buildings especially, have separate power circuits that are intended for use by PCs. Keeping your PC on a circuit that is separate from the circuit running your refrigerator and air conditioning unit means that there will be much less interference passing to the computer from the other devices (and this will also improve the quality of the power being sent to your machine in general).

Power Conditioning: The use of a line conditioner or uninterruptible power supply can filter out interference caused by other devices that share a line with your PC.

Extracted from http://www.pcguide.com/care/care/gen/envEMI-c.html