Input
Connection
Considerations
High
quality,
fully
shielded
RCA
or
XLR
cables
are
recommended
for
use
with
Ultra
amplifiers.
‘Twisted
Pair’
cables
are
not
recommended.
Ultra
amplifiers
have
an
extremely
high
bandwidth,
and
twisted,
non
‐
shielded
cables
can
actually
act
as
an
‘antenna’,
receiving
outside
interference
and
signals
(EMI
and
RFI),
which
will
cause
the
amplifier
to
go
into
protect
mode.
Whenever
possible,
keep
preamplifier
level
audio
cables
away
from
amplifier
electrical
power
cords
by
at
least
a
few
inches.
Amplifier
AC
power
cords
are
carrying
much
more
current
than
other
source
and
preamplifier
components,
which
means
there
is
a
larger
degree
of
noise
or
“hum”
potential
with
the
amplifier
power
cord
in
close
proximity.
Output
Connection
Considerations
The
output
connectors
provided
on
each
channel
of
Ultra
amplifiers
are
standard
“binding
post”
speaker
connectors
with
industry
standard
spacing.
These
are
sometimes
called
5
‐
way
binding
posts
because
of
the
many
ways
in
which
the
speaker
wire
can
connect
into
the
posts.
The
posts
can
accept
bare
wire,
spade
terminals,
or
single
banana
connectors.
Keep
in
mind
that
if
you
use
“dual
banana”
plugs
and
“stack”
them,
you
will
be
creating
a
parallel
connection.
For
more
details
on
series
and
parallel
connections,
see
pages
23
‐
24.
It
is
important
to
observe
polarity
so
that
the
speaker
wire
connects
to
the
red
and
black
terminals
on
the
amplifier
and
the
corresponding
terminals
at
the
speaker.
Also,
make
sure
that
the
positive
speaker
wires
do
not
touch
the
negative
speaker
wires,
or
any
chassis
metal.
This
will
cause
a
short
circuit
and
activate
the
protection
circuitry.
Connection
Tips
for
Superior
Sound
Before
setting
up
your
new
system,
please
consider
the
following:
•
Always
make
sure
the
amplifier
is
turned
off
before
making
or
changing
ANY
connections.
•
Whenever
possible,
route
the
power
cords
away
from
the
signal
cables
or
speaker
wires
to
prevent
any
hum
or
interference
heard
in
the
speakers.
•
Many
RCA
type
patch
cords
can
be
a
very
tight
fi
t
and
there
is
usually
a
preferred
method
of
removing
them.
Some
have
to
be
removed
with
a
twisting
action.
Be
gentle
or
you
may
damage
the
jacks
of
your
amplifier,
the
cables
themselves,
or
other
components.
•
Many
audiophile
signal
cables
are
intended
to
be
hooked
up
in
one
direction.
If
this
is
the
case,
the
cables
will
be
marked
with
arrows
indicating
the
direction
of
signal
flow.
•
It
is
usual
for
the
right
channel
RCA
patch
cord
plugs
to
be
red
and
the
left
channel
connections
to
be
white,
grey,
or
black
(depending
on
the
cable
brand).
RCA
connectors
that
are
gold
will
be
designated
with
a
colored
band
to
designate
the
channel.
22
Summary of Contents for Ultra UPA-1
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