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32
A problem has recently developed with my MartinLogan
speakers. The right speaker seems to be hissing even
when the amplifier and such are not connected. I was
wondering if this sounds like any problem you have
encountered previously and have a simple solution for or
might it be something which will need to be looked into
more carefully.
Your speakers are dusty. See the vacuuming FAQ. The
electrostatic charge on the element has attracted air-
borne dust or pollen. Since 1993, all of our speakers
have been built with a charging circuit board that only
charges the electrostatic element when music plays. At
other times they are not charged and cannot collect dust.
You can get the same benefit by simply unplugging them
whenever they are not in use. A power strip is an easy
way to do that.
Could my children, pets, or myself be shocked by the
high-voltage present in the electrostatic panel?
No. High voltage with low current is not dangerous. As a
matter of fact, the voltage in our speakers is 10 times less
than the static electricity that builds up on the surface of
your television screen.
How do MartinLogan speakers hold up over a long term in
the humidity of tropical climates?
We should tell you that MartinLogan indeed has a very
substantial number of customers in tropical regions of
the world. Our speakers have been serving them nicely
for many years. This concern may have come from our
earlier design of speakers, which were charged continu-
ously. Since 1993, all of our speakers have been designed
so that they only charge the panel while music is being
played. This improvement has made a tremendous differ-
ence in the consistent performance of our product. There
may be a little more maintenance involved in humid
regions when not in an air conditioned environment.
Simply enough, the concern is to keep the electrostatic
panels dust free. Humidity will combine with any dust on
the panel to make it slightly conductive. This will result
in a slight pathway for the charge to leave the membrane
of the speaker. The solution is simple. They only require
occasional vacuuming with a strong vacuum hose.
How do I vacuum my MartinLogan speakers?
Vacuuming will be most effective if the speakers have
been unplugged for six hours to twelve hours (or over-
night). You need not worry about the vacuum pressure
damaging the "delicate" membrane. It is extraordinarily
durable. Dirt and dust may be vacuumed off with a brush
attachment connected to your vacuum cleaner, or you
may blow them off with compressed air. When vacuuming
or blowing off your panels do so to both sides, but focus
the majority of your attention on the front of the panels.
Should I unplug my speakers during a thunderstorm?
Yes, or before. It’s a good idea to disconnect all of your
audio/video components during stormy weather.
English
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