Blaupunkt GTA 270 SF User Manual

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
270
SF,
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
80
Hz
to
30,000
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-
~
able
to
dispose
of
the product.
-
Subject
to
changes
GTA270SF
I
47

Blaupunkt GTA 270 SF Specifications

General

Brand	Blaupunkt
Model	GTA 270 SF
Category	Amplifier
Language	English