ment generates, uses, and can radiate radio frequency energy and, if not
installed
and
used
in
accordance with the instructions, may cause
harmful
interference to radio com-
munications. However, there
is
no guarantee that interference
will
not occur in a
particular
installation. If
this equipment does cause
harmful
interference to radio or
television
recep-
tion, which can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the
following measures:
Reorient or relocate
the receiving antenna.
Increase
the separation between the equipment and receiver.
Connect the equipment into an
outlet
on a circuit different from that to which the
receiver
is
connected.
Consult
the
dealer
or
an
experienced radio TV technician for
help.
Notes
on
environmental
protection
At the end
of
its
useful life,
this product must not be disposed
of
with
regular household
waste but must be returned to a collection
point for
the
recycling
of
electrical
and
electronic
equipment. The
symbol on the
product, user's
manual
and packaging, point this out.
The
materials
can be reused
in
accordance with their markings. Through
re-use,
recycling of raw
materials,
or other forms of
recycling
of
old
products, you are making an important contribution to the protection
of
our environment.
Your
local
administrative office can advise you of the
responsible
waste
disposal
point.
II.
INTRODUCTION
PSB
subwoofers
are
designed
to
provide
the
flattest
possible
frequency
response,
full
bass
extension,
low
distortion
and
high
output.
Beyond
these
characteristics
there
are
a
few
other
parameters
that
we
feel
are
very
important
in
the
design
of
a
subwoofer.
First
and
foremost,
a
PSB
subwoofer
must
be
musical.
A
subwoofer
should
also
have
the
abil-
ity
to
play
musically
even
when
overloaded
or
stressed.
For
this
reason
PSB
subwoofers
incorporate
proprietary
limiting
circuitry
preventing
audible
overload
while
remaining
true
to
the
dynamics
of
the
music.
This
circuitry
combines
peak
limiting
circuits
that
hold
amplifier
signal
swing
to
the
point
just
short
of
the
amplifier's
clipping,
with
compression
circuitry
that
will
reduce
the
amplifier's
gain.
Managing
heat
dissipation
is
challenging
with
today's
greater
power
demands.
Where
suitable,
PSB
subwoofers
use
the
latest
implementation
of
super
efficient
Class
D
power
amplification,
featuring
an
automatically
varying
switching
frequency
that
maintains
maximum
efficiency
and
low
THO
under
all
conditions.
PSB
woofers
are
always
designed
to
reduce
mechanical
noise
and
prevent
harsh
sounds
at
the
excursion
extremes.
Ports
have
large
radius
end
flares
to
reduce
noise
from
air
tur-
bulence.
Cabinets
and
amplifiers
are
designed
to
prevent
air
leaks,
which
can
contribute
minute
amounts
of
noise.
All
of
our
designs
are
exhaustively
tested
to
survive
15
continu-
ous
hours
of
being
driven
to
maximum
output.
Whichever
PSB
subwoofer
you
have
chosen,
we
hope
that
you
appreciate
the
attention
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