Blaupunkt GTA 270 SF User Manual

GTA
270
SF
When selecting the
installation
location, select a dry loca-
tion
that
offers
sufficient
air circulation
for
cooling
the
amplifier.
The
GTA
270
SF
must
not
be
installed
on rear shelves, rear
seats
or other locations
that
are
open
to
the front.
The
installation
location must be suitable
to
acc~pt
the
ac-
companying screws and provide a firm support.
The amplifier power cable must be fitted with a fuse no more
than
30
em
from the battery
to
protect the vehicle battery
in
case
of
a short circuit between power amplifier and battery.
The fuse
of
the amplifier protects only the amplifier,
not
the
vehicle battery.
Use
loudspeakers
with
2-
4 0
impedance
(see
table or in-
stallation
drawing). Observe the maximum power handling
capacity (music output). Do
not
connect loudspeakers
to
earth,
use
only the referenced terminals.
Amplifier
GTA
270
SF
The amplifier
is
suitable for connecting a car sound system
with
cinch connections.
For
the
connection
to
car sound systems
with
ISO
connec-
tion,
use
Blaupunkt
ISO
cinch adapters
(7
607
893
093
or
7
607
855
094).
Application
options
and
loudspeaker
connection
Stereo
Mode
Max power 2
X
140W
I
40
Fig.4, 5
Mono
mode
Max power 1
x420W
I
40
Fig.6
Stereo
Mode
Max power
2 x
2oow
12
o
Fig.4, 5
Stereo
Mode
RMS
power
2x70W
/40
Fig.4, 5
Mono
mode
RMS
power 1 x
2oow
14
o
Fig.6
Stereo
Mode
RMS
power 2 x
1oow
12
o
Fig.4, 5
Frequency response
1
0
Hz
-
30,000
Hz
Signal-to-noise ratio
>
92
dB@
RMS
power
Signal-to-noise ratio
>
75
dB@ 1
WI
1 kHz
Distortion factor (RMS)
<
0.05
°/o
Stability
2 0
(4
0 in bridge mode)
Input
sensitivity
0.1
-8
v
Low-pass
filter
(Low
Pass)
50-250Hz
High-pass
filter
(High
Pass)
80Hz
Bass
boost
0
dB
to
+12
dB
Dimensions
WxHxD(mm)
197
X
52
X
296
Wx
H x D
(")
7.8
X
2.1
X
11.7
46
I
Plus
I minus connection
-
We
recommend a minimum
cross
section
of
6
mm
2
•
- Route
commercially
available
plus
cables
to
the battery
and connect via fuse holder.
-
Use
cable glands for holes
with
sharp edges.
- Securely fasten
commercially available minus cables
to
a
noise-free earth
point
(chassis
screw, chassis metal) (not
to
the minus pole
of
the battery).
-
Scrap
the
contact surfaces
of
the earth
point
until they
are
bright
and grease with graphite grease.
Integrated
fuses
(Fuse)
The fuses integrated in the amplifier
(Fuse)
protect the power
amplifier and the entire electrical system
in
case
of
an
error.
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.

Blaupunkt GTA 270 SF Specifications

General

Brand	Blaupunkt
Model	GTA 270 SF
Category	Amplifier
Language	English