AXTON A1390 Mode D'emploi page 34

For appropriate crossover frequency selection, all tone con-
trols (Bass, mid, Treble, Sub) and all fader and balance controls
etc. on the head unit have to be brought to their neutral
or center position! The "Loudness" function should also
be deactivated.
The HIGHPASS filtering setting (HPF) - on the respective con-
trol - of the satellite channels will also take away unnecessary
mechanical and electrical 'strain' from coaxial speakers or
component speaker systems (compos), as such speakers are
not designed to reproduce powerful bass signals in the first
place. Depending on the actual cone surface area, voice-coil
diameter and the rated power handling of the 'satellites'
it is recomenended to set the hiphpass cross-over / cut-in
frequency between 50 and 250 Hz.
If the satellite highpass frequency is set too low, the mid-
bass reproduction will be increased, but at the same time the
power-handling capacity of the satellites will decrease. If the
highpass frequency is set too high, the mid-bass reproduction
will become 'thinner' while the power-handling capacity of
the satellites will increase.
As a general guideline, below you find a practice-proven
list for appropriate satellite (HigHPASS) HPF crossover fre-
quencies covering the most widely used dashboard, door
and rear-shelf speaker diameters:
34
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Front Satellite Systems
10 cm Ø Coaxials or 2-Way Compos
13 cm Ø Coaxials or 2-Way Compos
16 cm Ø Coaxials or 2/3-Way Compos
rear Satellite Systems
10 cm Ø Coaxials or 2-Way Compos
13 cm Ø Coaxials or 2-Way Compos
16 cm Ø Coaxials or 2/3-Way Compos
Satellite rule 1
Satellite rule 2
The (lOWPASS) crossover frequency for the subwoofer should
usually be selected between 50 and 90 Hz. Adjust the LOWPASS
cut-off control in such a way that the bass reproduction will be pre-
cise and rich, while still delivering a good and solid low-end bass.
Subwoofer
HPF (FilTEr) FrEQ.
HPF (FilTEr) FrEQ.
The better sounding satellite system should
always be installed in the front of the vehicle.
Based on identical speaker diameters and
comparable engineering quality of the front
and rear satellites, the crossover / cut-in
frequency of the front satellites should
usually be set lower than the highpass
frequency of the rear satellites.
Generally, setting the LPF lowpass cut-off
frequency too low will result In a weak and
uncontoured bass response.
Setting the LPF control too high tends to give
the subwoofer a 'booming' sound.
90-120 Hz
80-100 Hz
70 - 80 Hz
100-150 Hz
120-130 Hz
100-130 Hz