inductors
have extremely low insertion loss
so
that none
of
the
driving
power
to the
loudspeaker system
is
dissipated
in the
network. Each inductor
is
calibrated
on
a
sensitive electronic bridge
and its
value
set
precisely.
The
dividing
network
is
provided
with
Brilliance
and
Presence
controls which allow balancing loudness
of
the
midrange
and
high frequency drivers
to
satisfy
listening
room
acoustics
and
personal preference.
The
dividing
network controls
do not
appreciably affect
the
crossover frequencies,
nor do
they
limit
the
upper
frequency response
of the
loudspeaker system.
If
it
should
be
necessary
to
remove
the
loudspeaker
system components
for
testing
or
repair, disconnect
the
loudspeaker system
from
the
amplifier
and
proceed
as
follows:
GRILLE
—
The grille
is
secured
to the
enclosure
by
dowel
pins located near
the
four corners
of
the
assembly.
It
can
be
removed
by
grasping both
top or
both bottom
corners
and
gently
lifting
the
assembly away
from
the
enclosure.
To
replace
the
grille,
reposition
it on the
enclosure
and
apply light pressure
at
the
corners
until
the
assembly
is
fully
seated
on the
dowel pins. Note that
one
of
the
dowel pins
is
offset
to
insure that
the
grille
can only
be
replaced when positioned properly.
The JBL
emblem
can
be
rotated
to
read correctly whether
the
loudspeaker system
is
placed horizontally
or
vertically.
LOW
FREQUENCY-Place the
enclosure
on its
back
on
a
clean, padded surface.
The
low frequency
loudspeaker
is
mounted
from
the
front
of the
baffle
panel
and
held
in
place
by
four Phillips-head screws
threaded
into
T-nut fasteners which
are
anchored
on the
back
of
the
panel. Carefully unscrew
the
machine screws
11
Loudspeaker
System
Components
10-inch
Low Frequency Loudspeaker
5-inch Midrange Transducer
1.4-inch
High
Frequency
Direct
Radiator
COMPONENT
REMOVA
I.
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