Blaupunkt GTA 270 SF User Manual

GTA
270
SF
If
a
replacement
fuse
is
used, never bridge fuses
or
replace
them
with
a type
with
higher current.
Connection examples
Connection
of
the
voltage supply
...............................
Fig.
2
Connection
to
car sound system
with
cinch
output
.......................................................................
Fig.
3
Loudspeaker connections
.............................................
Fig.
4/5/6
I
-/o-
+12V
I
Remote connection
of
the
amplifier
with
switchable +
12
V
voltage
source.
This
allows the amplifier
to
be switched on and
off
using the
on/off-switch
of
the radio device.
Level control
The
Level control
is
used
to
adjust the
input
sensitivity
of
the power
amplifier
to
the
output
voltage
of
your car sound
system
preamplifier
output.
The adjustment range
is
from
0.1
V
to
8
V.
If
a car sound system
of
a third party manufacturer
is
con-
nected, the input sensitivity must be adjusted corresponding
to the manufacturer data.
A few
important
explanations in this context:
By
turning the
control clockwise,
the
input
sensitivity
of
the
amplifier
and, therefore,
also
the
volume
increases. However,
this
is
not
a
volume
control;
no
further
amplifier
output
can
be achieved in
the
end position, even
if
it
may sound
like
that
at the beginning. The system merely
increases the
volume
faster
if
the
volume control
of
the car sound system
is
turned up.
Loudspeaker connections
(If
the
amplifier
is
to
be jumpered, continue
with
the section
"Bridged
loudspeaker
connections" at this point).
As
with
every audio component, the correct
polarisation
of
amplifier
and loudspeakers
is
of
essentially
importance for a
good
bass
response.
For
this reason, ensure that the positive
(+)connection
of
the
amplifier
is
connected
with
the posi-
tive connection(+)
of
the
loudspeaker;
the same
applies
to
the negative
(-)
connections.
In
addition, the
left amplifier
channel
must be connected
with
the left loudspeaker and
the right
amplifier channel
with
the right
loudspeaker.
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.
6
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
1
50
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
FRANc;AIS
Garantie
Notre garantie constructeur s'etend
a
tous nos
produits
achetes
au
sein de
I'Union
Europeenne. Pour
les
appareils
vend
us
en dehors de
I'Union
europeenne,
les
conditions de
garantie
applicables sont celles
definies par notre represen-
tant
agree
dans
le
pays.
Vous
pouvez
consulter
les
conditions
de garantie sur le
site
www.blaupunkt.com.
Recommandation
Les
performances
d'un
amplificateur
ne seront jamais
meilleures que son installation
ne
le
permet. Une
installa-
tion
correcte augmente
les
performances
d'ensemble
de
votre systeme audio.
Vous
devriez confier le
montage de
l'amplificateur
GTA
a
un specialiste.
Si
vous souhaitez cepen-
dant
effectuer vous-meme
ce
travail, lisez
soigneusement
Ia

Blaupunkt GTA 270 SF Specifications

General

Brand	Blaupunkt
Model	GTA 270 SF
Category	Amplifier
Language	English