Herman, i do not know about this specific aspect, but am throwing this out for you and others to comment on.
I've always thought that lead was a great magnetic shield. If this is true, some type of lead based material SHOULD re-direct or block the magnetic field away from the TV below it. While this might not solve the problem, it could minimize it.
What i'm basing my above statement on is the fact that lead is used as a diffusor / reflector / shield for radio waves and X-Ray's. Since RF signals and X-Rays are simply concentrated and controlled magnetic waves that "float" at high frequencies, i would "think" that the same principles would apply to low frequency magnetic fields. Granted, some devices have different efficiency curves as frequency changes but i doubt that lead becomes useless at these frequencies. I may be wrong though, so please correct me. I would rather be wrong and learn what is right than to continue on in ignorance.
As to installing a "bucking magnet" on the back of a driver that was not designed for it, i highly recommend NOT doing that. This changes almost every electrical characteristic of the driver. As such, it would / could alter the performance of the system to a very noticeable degree. Like anything else, taking all of the variables into account should be done BEFORE the project is completed and the design finalized.
I do agree that moving the speaker away from the TV is the easiest approach. Whether or not the sonic presentation is still acceptable is the question. Sean
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I've always thought that lead was a great magnetic shield. If this is true, some type of lead based material SHOULD re-direct or block the magnetic field away from the TV below it. While this might not solve the problem, it could minimize it.
What i'm basing my above statement on is the fact that lead is used as a diffusor / reflector / shield for radio waves and X-Ray's. Since RF signals and X-Rays are simply concentrated and controlled magnetic waves that "float" at high frequencies, i would "think" that the same principles would apply to low frequency magnetic fields. Granted, some devices have different efficiency curves as frequency changes but i doubt that lead becomes useless at these frequencies. I may be wrong though, so please correct me. I would rather be wrong and learn what is right than to continue on in ignorance.
As to installing a "bucking magnet" on the back of a driver that was not designed for it, i highly recommend NOT doing that. This changes almost every electrical characteristic of the driver. As such, it would / could alter the performance of the system to a very noticeable degree. Like anything else, taking all of the variables into account should be done BEFORE the project is completed and the design finalized.
I do agree that moving the speaker away from the TV is the easiest approach. Whether or not the sonic presentation is still acceptable is the question. Sean
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