JBL 6260 - Five-Way Binding Post Outputs; Output Polarity and Bridged Mono Connection

2.5.2
INPUT
CONNECTION,
DUAL MONO
MODE
When
operating
the
amplifier
as
two
independent
amplifiers,
but
with the
same
program
signal,
only
the
Channel
A
input
need
be
used.
Set
the
mode
switch
to
Dual
Mono.
Do
not
apply
signal
to
the
Channel
B
input.
2.5.3
INPUT
CONNECTION,
BRIDGED
MONO
MODE
When
operating
the
amplifier
as a
high
powered
single-
channel
amplifier,
only the
Channel
A
input
is
used.
That
signal
is
applied
"in
phase"
to
Channel
A, and,
with
inverted
polarity,
to
Channel
B.
No
signal
should
be
applied
to
the
Channel
B
input,
and
the
Channel B
level
control
should
be
turned
all
the
way
down (fully
counterclockwise).
2.5.4
FIVE-WAY
BINDING
POST
OUTPUTS
Five-way
binding
post
outputs
have
been
chosen
because
they
allow
connections
to be
made
quickly,
they
facilitate
polarity
reversals
for
speaker
"phasing,"
and
they
can
handle
high
current
with a
greater
margin of
safety
than
phone
jacks.
See
Figure
2-4.
The
preferred
connection
method
is to
use
a
dual
banana
plug
for
each
speaker
cable.
Simply
insert
each
plug
into
the
corres-
ponding
channel's
red and
black
binding
posts.
See
Figure
2-5.
In the
absence
of a
dual
banana
plug
(or
two
single
banana
plugs),
there are
other
alternatives.
To
connect
stranded
speaker
cable,
loosen
the
plastic
terminal
nut,
wrap
the
stripped
and
twisted
wire
end
clockwise
around
the
terminal,
and
secure
it
by
tightening
the
nut.
NOTE:
It
is
preferable
to
tin
the
wire
ends
with
solder
to
prevent
unraveling;
avoid
excess
solder as
it
can
promote
cable
breakage.
Smaller
speaker
cable
could
be
pushed
through
the
hole
in
the
binding
post
shaft,
but we
recommend
using
heavier
gauge
cables
that
ought
to be
wrapped
around
the
shaft.
If a
lug
is
installed
on
the
cable,
loosen the
terminal
nut,
push
one
"leg"
of
the lug
through
the hole
in the
shaft,
and
tighten
the
nut.
2.5.5
ABOUT
OUTPUT
POLARITY
AND
BRIDGED
MONO
CONNECTION
In
normal
stereo
operation
(or
dual mono)
,
a
positive-going
signal
applied
to an
input's
pin
#3,
the
phone jack
tip,
or
the
+
terminal
of
the
barrier
strip
will
cause a
positive-going
signal
to
appear
at the
corresponding
channel's
red output
binding
post.
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