I missed that day in fre\shman physics, so i remain not informed but
concerned.

A long time ago, i almost had a very nasty grounding because some speakers
which had been brought on board deranged the compass.


"Maynard G. Krebbs" wrote in message
...
On Fri, 17 Mar 2006 14:44:53 GMT, chuck wrote:

Marine-type speakers are generally shielded (as are speakers intended
for use near CRTs) so this should not be a problem. The speaker
description/packaging should indicate whether it is magnetically
shielded.

I'd be interested in hearing of any cases where a magnetically shielded
speaker has interfered with magnetic compass readings.

Chuck


Something I always wondered about is, "How do you magnetically shield
something."
Doesn't Magnetism pretty much go through things. How could you shield
a speaker's magnet so it wouldn't affect a compass?
Mark E. Williams