Bosch Blaupunkt BQX 280 Instructions De Montage page 6

The amplifier BQX 280 can be connected to car radios with Cinch
connector.
Use the enclosed ISO/Cinch connector to connect the amplifier to car
radios with ISO connector.
Safety Notes
Installation and connection recommendations
Disconnect the vehicle battery's negative terminal before making
connections.
Make sure to observe the safety instructions of the car manufacturer
(especially with regard to airbags, alarm systems, on-board computers
or vehicle immobilisers).
Before drilling holes, look to see what is on the other side. Make sure not
to damage any parts of the vehicle (battery, wiring looms, fuse box).
Choose an appropriate location for mounting the BQX 280, for example
at the splash wall, under the dashboard, beneath a seat or in the boot.
Fig. 1
Ensure that there is enough air circulation at the mounting location for
adequate heat dissipation.
To avoid possible interference, all cables should be routed at a sufficient
distance to the wiring harnesses.
Use the enclosed cable ducts at sharp-edged holes.
Use only loudspeakers with an impedance of 4 ohms. Take into account
their maximum power handling capacity (max. power).
Use only loudspeaker connection cables with a cross-section of up to 16
mm 2 . Never connect speaker leads to the vehicle ground. Ensure to use
only the terminals designated correspondingly.
The cross-section of the positive cable shall not exceed 2 x 2.5 mm
The unit is protected by two fuses, 20 A.
Possible applications
Full range 4 x 70 watts or 2 x 140 watts
Low pass 4 x 70 watts or 2 x 180 watts, subwoofer cuoff frequency
80 Hz, slope 18 dB octave
Full range 2 x 70 watts, low-pass 2 x 70 watts.
Plus/minus connection
Route the enclosed positive cable to the battery and connect it via the
fuse folder.
Connect the fuse holder close to the battery.
Screw the enclosed positive cable to an interference-free ground spot
(chassis screw or plate). Do not connect it to the negative terminal of
the battery. The contact area of the ground source must be blank and
lubricated with graphite grease.
Examples
Power supply connection
Connection to car radios with ISO connector via Cinch socket
Connection to car radios with Cinch output
Conexión a autorradios con salida de altavoces
Use the adapter cable 7 607 893 093 for car radios with
20-pin terminal
When connecting the amplifier via Cinch or loudspeaker sockets, the
switching line must be connected.
GAIN ADJ
The Gain Adjust control button can be adjusted between 0.3 and 2 V.
When connecting a Blaupunkt car radio, adjust the control button to 2 V.
If a car radio of another brand shall be connected, adjust the input
sensitivity as detailed in the car radio specification.
GB
+12V
Loudspeaker connection
4 x 70 W
2 x 140 watts, use a Cinch/Cinch adapter cable
Make sure that the bridged channels are driven with the same signals.
Connecting the loudspeakers as illustrated in Fig. 9 is not permissible
Specification
Max. power:
RMS power:
Distortion factor:
Frequency response:
Channel separation:
Signal-to-noise ratio:
Inputs:
Outputs:
Dimensions (W x H x D):
Changes reserved
2 .
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
4 x 70 W or 2 x 140 W into 4 Ω
4 x 30 W or 2 x 75 W with 0,1 % THD
(DIN 45500)
<0.05 % at 10 W, 1 kHz, 4 Ω
<0,1 % at 10 W, 10 kHz, 4 Ω
10 Hz - 60 kHz (-3 dB)
> 55 dB / 1 kHz
> 45 dB / 10 kHz
> 95 dB (A)
4 x Cinch (RCA), gold-plated
4 loudspeaker outputs, 4 Ω
320 x 43 x 210 mm
Fig.7
Fig.8