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How to operate the Sound Adjustment Mode
57
XI
• 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 main unit corresponds to basic speaker systems which comprise front speakers, rear speakers,
and subwoofer. 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.
Multi-harmonizer
When original sounds are converted to MP3/WMA and Memory Stick (ATRAC3) format, frequency
ranges that are not normally audible to the human ear are compressed. The multi-harmonizer can
be used to play back these compressed sounds at as close to their original form as possible so that
clear and powerful sound can be enjoyed.
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.
Non-Fader output
Depending on your external amplifier, non-fader output may be stereo or mono.
E-iSERV sound effect customizations
The parametric equalizer, time alignment, and crossover setting can be adjusted using this main
unit, or through the Eclipse web site. (Settings can be stored on CD-R or Memory Stick.)
Bass range
(woofers)
Mid range (Front and rear speakers)
20Hz
fc(LPF/HPF)
20kHz
63-200Hz