Blaupunkt Stereo Amplifier EMA 255 Manuale Utente

48

Stereo mode
Max power

2 x 110 W / 4 Ω 

Fig. 4, 5

Mono mode
Max power

1 x 330 W / 4 Ω

Fig. 6

Stereo mode 
Max power

2 x 160 W / 2 Ω

Fig. 4, 5

Stereo mode
RMS power

2 x 55 W / 4 Ω

Fig. 4, 5 

Mono mode
RMS power

1 x 165 W / 4 Ω

Fig. 6

Stereo mode
RMS power

2 x 80 W / 2 Ω

Fig. 4, 5 

10 Hz - 30,000 Hz

> 85 dB @ RMS power

> 75 dB @ 1 W / 1 kHz

< 0.08 %

2 Ω (4 Ω in bridge mode)

0.2 - 10 V

Low-pass fi lter 
(Low Pass)

50 - 250 Hz

High-pass fi lter 
(High Pass)

80 Hz

0 dB / 6 dB / 12 dB

Dimensions
W x H x D (mm)
W x H x D (")

184 x 52.5 x 183
7.25 x 2.1 x 7.2

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 

1

 via a shielded sound cable. 

With control via the loudspeaker outputs, the input connec-
tions of pos. 

2

/

3

 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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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.

The fuses integrated in the amplifi er (Fuse) protect the power 
amplifi er 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 of the voltage supply ............................... Fig. 2
Audio inputs  ....................................................................... Fig. 3
Loudspeaker connections  ............................................. Fig. 4/5/6

+12V

Remote connection of the amplifi er with switchable +12 V 
voltage source.

This allows the amplifi er to be switched on and off  using the 
on/off -switch of the radio device.

The Level control is used to adjust the input sensitivity of 
the power amplifi er to the output voltage of your car sound 
system preamplifi er output.

The adjustment range is from 0.2 V to 10 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 
amplifi er and, therefore, also the volume increases. However, 
this is not a volume control; no further amplifi er 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.

(If the amplifi er is to be jumpered, continue with the section 
"Bridged loudspeaker connections" at this point).

As with every audio component, the correct polarisation of 
amplifi er and loudspeakers is of essentially importance for a 
good bass response. For this reason, ensure that the positive 
(+) connection of the amplifi er is connected with the posi-
tive connection (+) of the loudspeaker; the same applies to 
the negative (-) connections. In addition, the left amplifi er 
channel must be connected with the left loudspeaker and 
the right amplifi er channel with the right loudspeaker.

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EMA_255_22LG.indd   48

EMA_255_22LG.indd   48

29.07.2011   9:16:01 Uhr

29.07.2011   9:16:01 Uhr