Blaupunkt GTA 470 SF User Manual

GTA470SF
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
470
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
80
Hz,
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 setting options
are:
0
dB
I
+6
dB
I+
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
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 470 SF Specifications

General

Brand	Blaupunkt
Model	GTA 470 SF
Category	Amplifier
Language	English