On Tue, 09 Dec 2003 19:00:29 GMT, "Doug"
wrote:

Some marine speakers include shielding so that they can be placed closer to
a compass (I am NOT suggesting right next to a compass). Unshielded speakers
are a frequent cause of "my autopilot doesn't work on some headings"
problem.
Doug K7ABX
"m Ransley" wrote in message
...
.
Are marine stereo speakers just high quality car speakers. As those
with rubber surrounds and plastic cones and dust caps. If not what
would be the differences. Thanks



I know you can shield RF and other electronic interferance but how can
you shield magnetic interferiance?
Mark E. Williams