marine stereos

[m Ransley]

Are marine CD stereos, car stereos encased in water resistant cases or
are they really improved. Are the boards potted or sealed. Im sure
controls would have water resistance. I would be refering to
inexpensive CD players labeled Marine .
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

 

[Maynard G. Krebbs]

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
.

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

 

[Maynard G. Krebbs]

Most marine speakers are manufactured with rigid plastic baskets (the
part that the cone and magnet are glued to) and shields that keep salt
water out of the voice coil assembly (because most magnets have a high
component of ferrous, or iron that rusts).

If you buy a regular pair of high end car speakers, they will sound
great for a season, then rust out.

Alec

Thanks
Mark E. Williams