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

Jim Conlin wrote:
I'm very uneasy about speakers whose position or orientation is not fixed.
They can seriously derange a magnetic compass.
I'd much prefer that speakers be in a fixed location and orientation. None
within several feet of the compass.

"derbyrm" wrote in message
news:F6lSf.31888$oL.11786@attbi_s71...

Sorry, I lost the thread to a "view," but Radio Shack on-line has a $20
extension speaker


http://www.radioshack.com/product/in...entPage=search

For "waterproof," stick it in a big baggie.

Roger

http://home.insightbb.com/~derbyrm