Pioneer DEH-80PRS Operation Manual page 24

Section
Operating this unit
02
Phase
You can switch phase (normal, reverse) for
each speaker unit's input signal. When the
continuity of sound between speakers is im-
precise, try switching phase. This may improve
the continuity of sound between speakers.
Points concerning network adjustments
Cut-off frequency adjustment
! With the low-range speaker installed in the
rear tray, if you set Low LPF cut-off fre-
quency high, bass sound is separated so
that it appears to come from the rear. You
are recommended to set Low LPF cut-off
frequency to 100 Hz or lower.
! The maximum input power setting for mid-
dle-range and high-range speakers is
usually lower than low-range speakers.
Please be aware that if the Mid HPF or
HighHPF cut-off frequency is set lower
than required, strong bass signal input
may damage the speaker.
Level adjustment
The basic frequencies of many musical instru-
ments are in the middle range. First perform
middle-range level adjustment, followed by
high-range and then low-range level adjust-
ment in that order.
Slope adjustment
! If you set a small absolute value for the
slope (for a gentle slope), interference be-
tween adjacent speaker units can easily re-
sult in degraded frequency response.
! If you set a large absolute value for the
slope (for a steep slope), continuity of
sound between speaker units is degraded,
and sounds appear to be separated.
! If you set the slope to 0 dB/oct. (pass), the
audio signal bypasses the filter, so the filter
does not have an effect.
24
En
Phase adjustment
When the cross-over point value for filters on
both sides is set to –12 dB/oct., the phase is
reversed 180 degrees at the filter cut-off fre-
quency. In this case, reversing the phase as-
sures improved sound continuity.
Normal phase
Muting the speaker unit (filter)
You can mute each speaker unit (filter). When
a speaker unit (filter) is muted, no sound is
outputted from that speaker.
! If you mute the selected speaker unit (fil-
ter), MUTE blinks and no adjustments are
possible.
! Even if any speaker unit (filter) is muted,
you can adjust the parameters for other
speaker units (filters).
1 Use M.C. to select NW 1.
Refer to Introduction of audio adjustments on
page 20.
2 Turn LEVER to select the speaker unit
(filter) to be adjusted.
Low LPF (low-range speaker LPF)—Mid HPF
(middle-range speaker HPF)—Mid LPF (mid-
dle-range speaker LPF)—HighHPF (high-range
speaker HPF)
3 Press M.C. to mute the selected speaker
unit (filter).
MUTE blinks in the display.
# To cancel the muting, press M.C. again.
Adjusting network
1 Use M.C. to select NW 1.
Refer to Introduction of audio adjustments on
page 20.
Reverse phase
Crossover point