Lambda Labs - Professional Acoustics CX-1A/B Manual
If
the
red
LED
flashes
,
one
of
the
integrated
limiters
for
the
lowmid
driver
(distortion
limiter,
continuous
output
limiter,
continuous
current
limiter,
peak
current
limiter)
is
triggered.
Together
they
serve
to
ensure
sound
quality
and
safe
operation.
Short
flashing
at
high
SPL
output
conditions
is
a
completely
normal
and
usual
operational
status.
Heavily
flashing
or
even
continous
light
means
an
overdriven
signal
chain
which
affects
the
sound
quality.
Extreme
or
permanet
overdrive
is
hazardous
for
the
low
frequency
driver,
especially
on
high
ambient
temperature
or
with
stationary
use
of
sine
signals
with
frequencies
in
the
range
of
the
loudspeakers
minimal
electrical
impedance.
The
yellow
LED
is
a
temperature
monitoring
for
the
amplifier
module
and
lite
up
under
extreme
conditions
only.
A
slow
flash
is
an
indicator
for
high
temperature.
This
status
is
just
for
your
information.
A
rapid
flashing
will
follow
if
the
temperature
rising
further,
and
causes
a
reduction
of
the
output
level
to
lower
the
temperature
to
an
uncritical
level
again.
When
playing
music,
this
protective
mechanism
should
only
appear
if
the
ambient
temperature
is
very
high
and/or
the
equipment
is
exposed
to
direct
sunlight.
A
continuous
light
means
a
temporary
muting
of
the
output.
The
green
signal
LED
illuminates
permanently
as
soon
as
an
input
signal
is
detected.
If
it
does
not
light
up
despite
the
connection
to
the
output
device,
check
the
XLR
cables
and
all
peripheral
connections.
Make
sure
that
the
READY
LED
is
also
permanently
lit.
The
green
READY
LED
lights
up
permanently
as
soon
as
a
stable
power
supply
has
been
applied
and
the
DSP
Unit
has
been
booted
up
completely.
2.2.1.5.
Amplifier
Module
&
DSP:
Selecting
Presets
The
amplifier
module
has
4
pre-programmed
factory-set
presets.
These
are
optimized
for
the
particular
speaker
type
and
its
possible
applications.
The
presets
can
be
selected
by
pushing
the
Preset
Select
button.
After
the
preset
has
been
loaded,
the
LED
of
the
selected
preset
is
illuminated
permanently.
The
Preset
Select
button
is
located
in
the
middle
of
the
Control
Panel.
To
make
sure
that
the
desired
preset
will
be
selected,
the
preset
assignment
list
is
printed
on
the
lower
part
of
the
Control
Panel:
!
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