JBL 6260 - Protection Circuitry; Input and Output Connectors

6230
6260
SHIPPING
WEIGHT:
15.9 kg
24
kg
(35
lbs)
(53
lbs)
OPTIONAL
ACCESSORIES:
Attenuator
security
cover,
70 V
and 100 V out-
put
transformer
panels,
input
transformers
PROTECTION
CIRCUITRY: The
amplifier
output
is
protected
against
short
circuit
and is stable
into
reactive
loads.
Short
circuit
protection is
clean
with no
odd
behavioral
characteristics.
The
input
amplif-
iers
are
protected against
excess
input
curr-
ent.
The
loudspeakers are
protected
against
any
failure in the
amplifier by
an
internal
relay
which
disconnects the
load
from the
amp-
lifier
output and
connects it to
ground. The
circuit is
activated
at turn
on and
turn
off
to
prevent thumps
in the
loudspeaker
during
system power
up/down.
The
relay also
disconn-
ects
the
load if excess DC
voltage
is
detected
at the output or
upon
failure
of any of
the
amplifier
power
supplies.
If the
amplifier
overheats due
to
a
lack
of
ventilation
the
relay
opens
until the
amplifier
has
begun
to
cool
down.
CONTROLS:
Independent
channel
level
controls
are
detented.
Illum-
inated
rocker-type
power
switch.
Rear
panel
recessed
stereo/dual
mono/bridged
mono
mode
switch.
INDICATORS:
Individual
channel
clip
indicator
LEDs.
STANDBY
LED
indicates
action of
output
protection
circuit.
CONNECTORS
:
Input:
3-pin XL-type
3
conductor 6.3
mm
(1/4
in.)
phone
jacks
and
barrier strip.
May
be wired
balanced or
unbalanced.
Ground:
Chassis
ground
and audio
ground connected
with
removable
shorting strap
on rear
panel
barrier strip
Output:
Color
coded 5-way
binding
posts on
19 mm
(3/4
in.)
centers
Power:
1.5 m
(5-foot)
3-wire AC power
cord
with U-ground
male
connector
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4
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