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Securely screw a standard 8 mm
ence-free earth connection point (bolt connected to the car body,
car body sheet metal) – though do not connect it to the negative
terminal of the battery. Scratch the surface down to the bare met-
al at the point at which the earth contact is made and apply graph-
ite grease.
Connection examples
Connecting the voltage supply ................................................... Fig. 2
Connection to car radios with RCA output ................................. Fig. 3
Connection to car radios with loudspeaker output .................. Fig. 3
Loudspeaker connections .......................................................... Fig. 4
Connecting the wire remote control (REMOTE GAIN) .............. Fig. 5
The switching line must be connected when connection is carried out
using the RCA jacks or the loudspeaker jacks of the car radio.
LEVEL control
You can use the LEVEL control to adjust the input sensitivity of the
Velocity power amplifier to the output voltage of your car radio's preamp
output.
The setting can be adjusted between 0.2 V and 5 V.
When connecting a car radio produced by another manufacturer, you
must adjust the input sensitivity in accordance with the information
provided by the manufacturer.
Please note that the LEVEL control is not a control for adjusting the
volume!
REMOTE GAIN
Connection for the supplied wire remote control (5 m).
This gives you the convenience of controlling the bass level remotely
(see Fig. 5).
If you want to use the remote control, the device must be operat-
ed with the low-pass filter activated (Crossover (FILTER) switch
set to position LP).
INPUT
Preamp inputs for the right and left channels. Please use high-quality
Velocity RCA cables for this connection.
OUTPUT
Outputs for connecting an additional amplifier (formation of chains of
amplifiers). Please also use high-quality Velocity RCA cables for this
connection.
LP / HP / FULL switch
Before installing, adjust the Crossover (FILTER) switch on the power
amplifier to set the low pass filter (LP), high pass filter (HP) or full
range (FULL). If you select the FULL position, the full frequency
response will be used at the output.
Using the integrated Crossover (FILTER)s is particularly useful in the
case of multi-channel sound systems with a separate subwoofer.
In order to obtain the best sound when a subwoofer is connected, the
subwoofer must be separated as far as the frequencies it receives are
concerned, i.e. it must only be fed with low frequencies (bass).
To ensure that this is the case, select LP and use the Crossover
(FILTER) frequency control to adjust the upper frequency to between
50 Hz and 250 Hz. This ensures that every subwoofer is optimally
separated as far as the frequencies it receives are concerned.
If HP is selected, you can use the associated Crossover (FILTER)
frequency control to adjust the lower cut-off frequency to between 50
Hz and 250 Hz.
If you want to precisely optimise the acoustic settings of the Crossover
(FILTER), we recommend you obtain advice from a Velocity dealer.
It is very important that you take into account the specifications
of the loudspeakers being used whilst you are adjusting the
Crossover (FILTER).
Crossover (FILTER) frequency control (LOW PASS + HIGH
PASS)
If the Crossover (FILTER) is activated (LP or HP) by adjusting the
position of the Crossover (FILTER) switch, you can then use the
corresponding control to adjust the Crossover (FILTER) frequency of
the respective filter to anywhere between 50 Hz and 250 Hz or 50 Hz
2
negative cable to an interfer-
+12V
and 250 Hz (i.e. continuously variable setting). This control has no
function in full range mode.
Settings for a subwoofer
In order to obtain the best sound when a subwoofer is connected, the
subwoofer must be separated as far as the frequencies it receives are
concerned, i.e. it must only be fed with low frequencies (bass).
1. Firstly, turn down the LEVEL control on the amplifier to minimum
and set the LOW PASS frequency control to its centre position.
2. Now play some music on your car sound system that you are very
*
familiar with and that contains some low bass (e.g. pop music).
Now slowly increase the volume of the subwoofer by turning the
LEVEL control on the amplifier in a clockwise direction until you
feel that the sound of the music is well balanced, i.e. the bass is
neither too weak nor overpowering.
3. Now listen to the relationship between deep male voices and the
upper bass and also take note of the relationship between the up-
per bass (kick bass) and the lower bass. The bass should ideally
sound crisp and have a clear low bass component, and male voic-
es should neither sound too weak nor should they billow out. You
can stop making adjustments if you are happy with the sound. If
not, move on to steps 4 and 5.
4. If male voices seem to billow out or the low bass is too weak, you
should turn the LOW PASS frequency control slightly towards min-
imum and then continue making your adjustments as described in
point 2 onwards.
5. If the bass sounds low but dirty and booming or the male voices
sound too weak, you should turn the LOW PASS frequency control
slightly towards maximum. Next, continue making your adjustments
as described in point 2 onwards.
6. The phase control should be set in such a way that the bass blends
into the overall sound as best as possible and cannot be heard as
a separate sound source.
If you want to precisely optimise the acoustic settings of the Crossover
(FILTER), we recommend you obtain advice from a Blaupunkt dealer.
It is very important that you take into account the specifications
of the loudspeakers being used whilst you are adjusting the
Crossover (FILTER).
BASS BOOST
You can adjust the bass output of the Blaupunkt amplifier using the
bass boost control. The settings range covers 0 dB to 0-12 dB.
SUB SONIC
The subsonic filter is used when a subwoofer is connected to the am-
plifier. It can be adjusted in order to protect the subwoofer against
mechanical overload due to low bass frequencies that fall outside our
hearing range.
Integrated fuses (FUSE) Fig. 2a
The fuses that are integrated in the amplifier protect the power ampli-
fier and the entire electrical system in the event of a fault. If the fuse
needs to be replaced, never bypass/bridge the fuse and never replace
it with fuse types that are designed for higher currents.
Power-on indicator (POWER / PROTECTION)
Green light:
Power amplifier switched on, normal operating mode.
Red light:
Power amplifier has been electronically deactivated due
to a fault.
Subject to changes.
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