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Placement of non-shielded speakers near TV?


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6 replies to this topic

#1 of 7 OFFLINE   Andrew O'Brien

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Posted December 14 2003 - 11:35 AM

How close is 'too close" when it comes to placment of non-shielded speakers near a TV? I seem to recall reading that non-shielded speakers can damage a TV if placed to close. My center speaker is shielded, but I was toying with the idea of using one of my un-shielded fronts as a center speaker.

Andy
Andy.

#2 of 7 OFFLINE   ChrisWiggles

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Posted December 14 2003 - 01:55 PM

What kind of tv? Direct view? rptv? digital-based rptv?

These all make a difference. You can move it close and see the image distortions, usually you don't need to be too far away. Direct views will be more susceptible, since the screen is the entire tube. CRT-RPTVs have the tubes down at the bottom front, so a speaker on top is well away from the tubes, and a digital-projector based RPTV or any other digital display won't have any problems at all.

#3 of 7 OFFLINE   Andrew O'Brien

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Posted December 15 2003 - 12:07 AM

Just a regular 32 inch JVC TV.
Andy.

#4 of 7 OFFLINE   Jack Briggs

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Posted December 15 2003 - 02:59 AM

No closer than two feet. I've ruined two perfectly good Sony TVs by placing them too close to unshielded speakers (remember, in the days before home theater, shielded speakers were rare). The chroma distortion caused by unshielded speakers can become permanent if left unattended for too long.

#5 of 7 OFFLINE   ChrisWiggles

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Posted December 15 2003 - 06:45 AM

Yes, then a direct view set you'll likey need to be at least a good foot away.

#6 of 7 OFFLINE   Andrew O'Brien

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Posted December 15 2003 - 12:09 PM

Thanks for the feedback.

Andy
Andy.

#7 of 7 OFFLINE   Chu Gai

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Posted December 15 2003 - 02:41 PM

Jack's recommendation is spot on. At approximately 2 feet, the strength of the magnetic field is reduced to the point where it's essentially as strong as the earth's magnetic field.