Technical data

Bass
boost
The
BASS
BOOST
control '
:.
12)
is
used
to
adjust the
bass
re-
sponse
of
the
amplifier.
The adjustment range
is
from
0
dB
to+
12
dB.
X-OVER
frequency control
The
X-OVER
control
:
..
0}
allows setting
the
desired
entry
frequency.
Example:
At a setting
of
150
Hz,
the
amplifier
has
a frequency range
of
25
Hz
to
1
50
Hz.
Settings
The
following
control
setting
is
recommended
as
basic
setting before
putting
the
device
into
operation: Sensitiv-
ity
(GAIN)
Pos.
__;
~
~
,!
to
minimum,
PHASE
Pos.
to
0°,
filter
(X-OVER)
Pos.
U~
)
to
approx.
80Hz
.
Switch on the device and
select a musical piece
with
distinctive
bass
playback.
Increase
the
volume
of
your car sound system
to
the desired
volume
level.
Now
slowly increase
the
GAIN
control
\
~~
)
until
you
can
hear a clear
amplification
of
the
bass
level.
Next, use
the
X-OVER
control
(
1]
:,
to
select a filter setting
that
provides
a well-contoured
bass.
You
may have
to
alternately optimise
the gain control
setting
(
~
)
and
the
filter setting
~:
i
~
>
A droning
bass
with
excessive
volume
requires a filter
setting
with
a
low
frequency.
The phase switch
(
3
~
)
must be set
so
that
the
bass
is
inte-
grated
into
the
acoustic pattern
as
best
as
possible and
not
recognisable
as
an individual source.
Also check
your
settings
of
the
Xlb
with
the
bass
control
fully
open and,
if
necessary,
with
activated loudness. An
overloading
of
the
subwoofer box by selecting an excessive
amplification (pos.
~
-
~
)
)results
in a distorted playback and
can
damage
the
loudspeaker.
Power-on indicator
(PWR
I
PRO)
Green
LED:
Output
stage on, regular operating status.
Red
LED:
Output
stage
is
electronically
switched
off
due
to
an error.
Recycling
and
disposal
"'e(
Please use
t~e
return and collection
systems
avail-
~
able
to
dispose
of
the
product.
-
Subject
to
changes!
Xlb
250
A •
Xlb
300
A
1
41