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Blaupunkt GTA 270 DSP Manual

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GTA 270 DSP
6
ENGLISH
Warranty
We provide a manufacturer's warranty for products bought
within the European Union. For devices purchased outside
the European Union, the warranty terms issued by our re-
spective responsible domestic agency are valid. The warranty
terms can be called up from www.blaupunkt.com.
Recommendation
The performance of an ampli er can only be as good as
its installation. A correct installation increases the overall
performance of your car sound system. The GTA ampli er
should be installed by a trained person. If you would to install
it yourself, please read these installation instructions very
carefully and allow yourself su cient time for the installation.
In conclusion, allow us a few words about the topic of health
protection:
During the playback of music in your vehicle, please consider
that continuous sound-pressure levels above 100 dB can
lead to permanent damages to the human ear and even to
loss of hearing. Using today's high-performance systems
and loudspeaker con gurations allows for reaching sound-
pressure levels above 130 dB.
Safety notes
Please observe the following safety notes during the instal-
lation and connection.
– Disconnect the negative pole of the battery! Observe the
safety notes of the vehicle manufacturer.
– When you drill holes, ensure that you do not damage any
vehicle components.
– The cross section of the plus and minus cable may not
be less than 6 mm
2
.
– Use cable glands for holes with sharp edges.
– An incorrect installation can result in malfunctions of
the electronic vehicle systems or your car sound system.
Installation and connection instructions
With respect to accident safety, the GTA 270 DSP must be
secured in a professional way.
When selecting the installation location, select a dry location
that o ers su cient air circulation for cooling the ampli er.
The GTA 270 DSP must not be installed on rear shelves, rear
seats or other locations that are open to the front.
The installation surface must be suitable to accept the ac-
companying screws and provide a  rm support.
The ampli er power cable must be  tted with a fuse no more
than 30 cm from the battery to protect the vehicle battery in
case of a short circuit between power ampli er and battery.
The fuse of the ampli er protects only the ampli er, not the
vehicle battery.
Only loudspeakers with 2 - 4 Ω impedance may be used
(see table or installation drawings). Observe the maximum
power handling capacity (music output). Do not connect
loudspeakers to earth, use only the referenced terminals.
Audio inputs
The preampli er outputs are connected to the cinch (RCA)
sockets via a shielded audio line (see Fig. 3).
Plus / 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.
Integrate fuse (20 A)
The fuse integrated in the ampli er protects the output stage
and the entire electrical system in case of a malfunction. 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
Audio inputs ...........................................................................Fig. 3
Loudspeaker connections .................................................Fig. 4 - 8
Remote control connection (optional equipment) ......Fig. 9
+12V
Remote connection of the ampli er with switchable +12 V
voltage source.
This allows the ampli er to be switched on and o using the
on/o -switch of the car sound system.
Loudspeaker connections
(If the ampli er is to be jumpered, continue with the section
"Bridged loudspeaker connections" at this point).
As with every audio component, the correct polarisation of
ampli er and loudspeakers is of essentially importance for a
good bass response. For this reason, ensure that the positive
connection (+) of the ampli er is connected with the posi-
tive connection (+) of the loudspeaker; the same applies to
the negative connections (-). In addition, the left ampli er
channel must be connected with the left loudspeaker and
the right ampli er channel with the right loudspeaker.
Bridged loudspeaker connections
The GTA ampli er can also be bridged for a mono con gura-
tion. This allows the ampli er to be used for one or several
subwoofers or a mid-range driver. In this con guration, the
ampli er combines the right and left channel to a single-
channel output (mono output).
Note:
The ampli er can add the right and left signal information
only if the right as well as the left cinch (RCA) connection
were carried out.
Caution:
In a bridge circuit, the ampli er load must be 4 Ω or
higher. A lower load leads to an overheating or switch-
o of the ampli er and can cause permanent damages.
GTA_270_DSP_13LG.indd 6GTA_270_DSP_13LG.indd 6 24.08.12 15:4824.08.12 15:48
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