FWIW, there are even nonmagnetic speakers, of which the piezo type are
unpleasantly common as beepers. Electrostatic speakers can be
impressive, but are difficult to design. Not worth the expense for use
with VHF radios.

Chuck

Maynard G. Krebbs wrote:
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