Blaupunkt GTA 2 Special - Page 10

Bridged loudspeaker connections
The
GTA
amplifier
can
also be bridged for a
mono
configura-
tion. This allows
the
amplifier
to
be used for one or several
subwoofers or mid-range drivers.
In
this configuration, the
amplifier combines the right and left channel
to
a single-
channel
output
(mono output).
Note:
The amplifier can add the right and left signal information
only
if
the
right
as
well
as
the
left
RCA
connection were
carried out.
Caution:
In
a bridge circuit,
the
amplifier load
must
be
4 ohm or
higher. A
lower load leads
to
an overheating or switch-off
of
the
amplifier and can cause
permanent
damages.
Adjusting the type and range of the
frequency
crossovers
With the
GTA
2 Special, the
type
of
frequency crossover
(i.e.
"Low
Pass"
or "Hi-Pass")
and the desired entry frequency
can
be adjusted.
For
example,
if
a pair
of
subwoofers
is
to
be
connected, the low-pass settings shown
are
required
(Fig.
3).
The entry frequency
is
dependent upon the frequency
range
of
the loudspeakers
(see
recommended frequency
range
of
the loudspeakers).
High-Pass
At a setting
of
80Hz,
the
amplifier
has
a frequency range
of
80Hz
to
25,000
Hz.
Low-pass
frequency
control
This
control
is
active
if
the switch
is
in the position
"Low-Pass",
and allows for setting the desired entry frequency.
Example:
At a setting
of
150
Hz,
the amplifier
has
a frequency range
of
1
0
Hz
to
150
Hz.
Bass
boost
The
bass
boost control
is
used
to
adjust the
bass
response
of
the amplifier.
The adjustment range
is
from 0
dB
to+
12
dB.
Power-on indicator
(POWER
I
PROTECTION)
Green
LED:
Output
stage on, regular operating status.
Red
LED:
Output
stage
is
electronically switched
off
due
to
an
error.
Recycling
and disposal
~
Please
use
the return and collection systems avail-
A
able
to
dispose
of
the product.
-
Subject
to
changes
GTA
2
Special
Edition
2011
47