Eclipse - Fujitsu Ten CD5435 - Manual (Page 35)

35
Basic operation
●The crossover function is a filter that allocates specified frequency
bands.
●A high-pass filter (HPF) is a filter that cuts out frequencies that are
lower than the specified frequency (bass range) and allows higher
frequencies (treble range) to pass through.
●A low-pass filter (LPF) is a filter that cuts out frequencies that are
higher than the specified frequency (treble range) and allows
lower frequencies (bass range) to pass through.
●The slope is the signal level at which frequencies that are one
octave higher or one octave lower are dampened.
The larger the slope value, the greater the slope. In addition,
when "PASS" is selected, the slope is eliminated (sound does not
pass through the filters), so that the crossover function has no
effect.
This deck corresponds to basic speaker systems which comprise
front speakers, rear speakers and an added sub-woofer if
necessary. In such cases, the crossover can be used to apply the
HPF to the front and rear speakers and the LPF to the sub-woofer
so that the sound from all speakers merges properly.
Non-fader phase
The sounds that are output from woofers include sounds that are in
the same frequency ranges that are output from the front and rear
speakers, and under the various conditions that can occur inside
vehicle compartments, some of these sounds may cancel each
other out. This phenomenon can be eliminated by changing the
phase of the woofer.
The phase of the woofer can be set to normal timing (in which the
output timing between the front and rear speakers and the woofer is
the same) or reverse timing (in which the output timing between the
front and rear speakers and the woofer is different), depending on
the vehicle compartment conditions.
20Hz
Bass range
(woofers)
Medium range (Front and rear speakers)
20kHz
fc(LPF/HPF)
80-100Hz
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