JBL 6290 User Manual

WARNING
BE
SURE
TO
VERIFY
BOTH
THE
ACTUAL
LINE
VOLTAGE
AND
THE
VOLTAGE
FOR
WHICH
THE
AMPLIFIER
HAS BEEN
WIRED
BEFORE
CONNECTING
AC
POWER.
APPLICATION
OF
EXCESSIVE
VOLTAGE TO
THE
POWER
SUPPLY
MAY
RESULT
IN
EXTENSIVE
DAMAGE
WHICH IS
NOT
COVERED
BY
THE
WARRANTY.
To
comply
with
most
electrical
codes
this
amplifier
is
supplied
with a
three-conductor
AC
power
cable,
the
grounding
pin
of
which is
connected
to the
chassis.
In
some
instal
lations
this
may
create
ground
loop
problems
when
an AC
potential
exists
between
conduit
ground
and
audio
ground.
This
will
be
evidenced
by
hum or
buzz
in
the
amplifier
output.
If
this
should
occur
please
refer
to
Section
2.9
for
suggestions.
Proper
grounding
of
the
amplifier
Is
important
for
both
noise
and
safety
reasons.
Be
aware
that
unless
the
amplifier
is
properly
grounded,
a
safety
hazard
can
exist. J B
L
accepts
no
responsibility
for
legal
actions
or
for
direct,
indirect
or
consequential
damages
that may
result
from
violation
of
e I
ectr i
ca I
codes
.
2.4
AMPLIFIER
MODE
SWITCH
A
recessed
switch
on
the
rear
panel
provides
for
convenient
change
of
amplifier
mode
from
stereo,
dual
mono,
and
bridged
mono
output.
The
functions
are as
follows:
STEREO;
Independent
channel
operation.
DUAL
MONO:
To
feed
both
channels
of
the
amplifier
with
the
same
input
signal,
the
dual
mono
mode
eliminates
the
need
for a
patch cord.
The
input
connector
goes
to
Channel
A.
The
signal
is
internal
ly
routed
to
Channel
A
and
Channel B,
with
both
level
controls
active.
There
is
no
connection
to
Channel B
Input.
BRIDGED
MONO:
This
mode
combines
the
power
of
both
channels
into
a
single
mono
amplifier.
Input
is
to
Channel A.
Level
control
is by
Channel A
and
Channel B,
and
output
is
taken
from
the
red
binding
posts of
Channels A
and B as
described
In
Section
2.5.5.
IMPORTANT;
BOTH
LEVEL
CONTROLS
MUST BE
AT
SAME
SETTING
FOR
PROPER
OPERATION.
I
1-2

JBL 6290 Specifications

General

Brand	JBL
Model	6290
Category	Amplifier
Language	English