EMA 455
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 amplifi er can only be as good as its in-
stallation. A correct installation increases the overall perform-
ance of your car sound system. The EMA amplifi 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 suffi
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 confi 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 EMA 455 must be secured
in a professional way.
When selecting the installation location, select a dry loca-
tion that offers sufficient air circulation for cooling
the amplifier.
The EMA 455 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 accept the
accompanying
screws and provide a
fi
rm support.
he amplifier power cable must be fitted with a fuse no
more than 30 cm 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 Ω 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.
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Application options and loudspeaker connection
Quadro mode
Max power
4 x 110 W / 4 Ω
Fig. 4, 5
Stereo mode
Max power
2 x 320 W / 4 Ω
Fig. 6
Quadro mode
Max power
4 x 160 W / 2 Ω
Fig. 4, 5
Quadro mode
RMS power
4 x 55 W / 4 Ω
Fig. 4, 5
Stereo mode
RMS power
2 x 165 W / 4 Ω
Fig. 6
Quadro mode
RMS power
4 x 80 W / 2 Ω
Fig. 4, 5
Frequency response
10 Hz - 30,000 Hz
Signal-to-noise ratio
> 85 dB @ RMS power
Signal-to-noise ratio
> 75 dB @ 1 W / 1 kHz
Distortion factor (RMS)
< 0.08 %
Stability
2 Ω (4 Ω in bridge mode)
Input sensitivity
0.2 - 10 V
Low-pass fi lter
(Low Pass)
50 - 250 Hz
High-pass fi lter
(High Pass)
80 Hz
Bass boost
0 dB / 6 dB / 12 dB
Dimensions
W x H x D (mm)
W x H x D (")
184 x 52.5 x 295
7.25 x 2.1 x 11.7
Audio inputs (see Fig. 3)
You can select between 2 diff erent audio inputs;
Cinch (RCA)
Hi level (loudspeaker connections)
Use only one of the audio inputs; otherwise, it may lead to
audio interferences.
The preamplifi er outputs are connected to the cinch (RCA)
sockets
3
via a shielded sound cable.
With control via the loudspeaker outputs, the input connec-
tions of pos.
1
/
2
are fed to the closest loudspeaker cables
(front or rear) on the left and right. They are separated and
connected to the input connections. The polarity of the + or -
connections must be observed. Bridge output stages (BTL) can
also be connected directly without an additional adapter.
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EMA_455_22LG.indd 5
29.07.2011 9:44:45 Uhr