Blaupunkt TSA 460 Guide D'utilisation page 11

Crossover frequency control
(LP FREQ + HP FREQ)
If the crossover is activated (LP or HP) by
adjusting the position of the X-OVER switch,
you can then use the corresponding control
to adjust the crossover frequency of the re-
spective filter to anywhere between 50 Hz
and 250 Hz (i.e. continuously variable set-
ting). 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 re-
ceives are concerned, i.e. it must only be
fed with low frequencies (bass).
1. Firstly, turn down the GAIN control on the
amplifier to minimum and set the LP fre-
quency 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 GAIN
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 upper bass (kick bass) and the lower
bass. The bass should ideally sound crisp
and have a clear low bass component,
and male voices should neither sound too
weak nor should they billow out. You can
stop making adjustments if you are hap-
py 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
LP frequency control slightly towards
minimum and then continue making your
adjustments as described in point 2 on-
wards.
5. If the bass sounds deep but dirty and
booming or the male voices sound too
weak, you should turn the LP frequency
control slightly towards maximum. Next,
continue making your adjustments as de-
scribed in point 2 onwards.
If you want to precisely optimise the acous-
tic settings of the crossover, we recommend
you obtain advice from a Blaupunkt dealer.
It is very important that you take into ac-
count the specifications of the loud-
speakers being used whilst you are ad-
justing the crossover.
SUB SONIC
The subsonic filter is used when a subwoof-
er is connected to the amplifier. It can be
activated in order to protect the subwoofer
against mechanical overload by low frequen-
cies that are outside our hearing range.
Integrated fuses (FUSE)
The fuses that are integrated in the amplifi-
er protect the power amplifier 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.
TSA 460
11