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B.
Phasing:
With
the
balance
control
in
the
CENTER
position,
play
a
musical
passage
with
deep,
rich
bass
and
switch
the
balance
control
to
the
LEFT
and
then
RIGHT
position.
If the
system
produces
less
bass with
the
balance
control
in
the
CENTER
position
than it
does with
the
balance
in
the extreme
LEFT
or
RIGHT
position,
the
system
is
out of
phase.
This
means
that somewhere
in the
subwoofer's
connections,
a
positive
(+)
wire
or
terminal
has
been
incorrectly
connected
to
a negative
(-)
wire
or
terminal.
Inspect
the
subwoofer's
INpUT
connections
and
the wiring
to
the
receiver/amplifier,
and
make
any
necessary
changes.
Locate the
wall
stud
beneath
the wall.
Use
the
mounting
bracket
as
a template
to
mark
the
holes
with
a
pencil.
Be
sure the
bracket
is level.
Secure
using
four
#
8.x.I
Il4
panhead
wood
screws.
Mäke
sure
screws
are
ldrrg
enough
to
pass
through
wall
material
and
penetrate
wall
stud.
Att¿ch
the loudspeaker
to
the wall
bracket
by
sliding
the
insert
located
on the
rear
of the
speaker
into
the
wall
bracket
slot.
Attach
speaker
wire
prior
to installing
on
the wall
bracket.
The
JBI
ProPerformer
Plus
System
is
designed
to
handle
up to 100
watts
per
channel.
Using
more
power
than
this voids
your
warranty
and
can
lead
to
potential
damage.
If
you
intend
to
run
extension
speakers
from
your
amplifier
to another
room
in
addition
to
the
ProPerformers
Plus
System,
connect
them
to
the
amplifier's
second
speaker
output,
not
to the
subwoofer,
which
would
result
in
a
loss
of
bass
from
those
speakers.
To
clean
the
speakers
and
subwoofer,
dust
with
a
clean,
soft
cloth.
Never
use
cleaning
solvents
or
MOUNTINÊ
BNACKET
INSTALLATION
PBOPEBFORMEB
USE
ANI)
íIIAINTENANCE
TNOUBLE.
SHOOTINÊ
abrasives
on the
speakers
or the subwoofer,
and
never
place
the nozzle
of
a
vacuum
cleaner
anywhere
near
the
subwoofer
ports.
If
you
have
a
problem
with
your
system,
try
the
following
procedures
before
taking
your
speakers
or
subwoofer
in for
service.
Often, the
problem
will
be
in
a component
other
than the
subwoofer
or speakers.
Problem:
One speaker
does
not
play,
or
it sounds
distorted.
Procedure:
Turn
offthe receiver/amplifier,
and
check
all wiring.
l¡ok
carefuþ
for loose
wire
strands
causing
short circuits.
If the wiring
and
connections
seem
fine, reverse
the
subwoofer's
INPUT
connections:
Hook the
left INPUTup
to
the
receiver,/amplifier's
right
SPEAKER
OUTPUT,
and the
right
INPUTto
the receiver/amplifier's
left
SPEAKER
OUTPLIT. Turn
the receiver/amplifier
on, and
play
some
music
at a modest volume
level.
If
the speaker
that was
not working
properþ
now
sounds
fine, the
problem
is not in
the speakers
or subwoofer.
Check
the
receiver/amplifier
and
source
components.
Problem:
Neither
speaker
plays,
or both
sound
distorted.
Procedure:
Turn
offthe receiver/amplifier
and
disconnect
the
subwoofer
system.
This will
automatically
disconnect
the
speakers
as well.
Next,
connect the
subwoofer
system
to another
receiver/amplifier
known
to be
operating
properþ.
Play
the
system. If
the
problem
fails
to appear,
it is
the
original
receiver/amplifier
that
is at
fault.
Problem:
The
sound
goes
offand
on intermittentþ.
Procedure:
Check for
shorts
in the
subwoofer
and
speaker
wiring
that
may be
triggering
the
receiver/ampliûer's
protection
circuibry.
If
no short
is
found,
follow
the
procedure
for
the
preceding
problem.
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