Filter
Top Products
DRZ9255 23
English
22 DRZ9255
English
●About P.EQ adjustment
The P.EQ menu contains the following
adjustment items.
• Selection of channel (LEFT/RIGHT)
Select the channel (left or right) to be adjusted.
• Selection of band (BAND)
Select the frequency band (1 to 5) to be adjusted.
• Selection of center frequency (fo)
Select the frequency to be taken as the center
frequency in frequency correction.
Bands 1 to 3: Select from the range 50 Hz to
20 kHz (1/3 octave steps, 27 points)
Bands 4 and 5: Select from the range 630 Hz
to 20 kHz (1/3 octave steps, 16 points)
• Gain adjustment (GAIN)
Gain (output level) can be adjusted within the
range -12 dB to +12 dB.
(0.5 dB steps, 49 points)
• Selection of Q-curve (Q)
Select the sharpness of the Q-curve within the
range 0.5 to 12.0.
(0.5 steps, 24 points)
• Copying adjustment values (COPY)
Select whether or not to copy the channel settings
currently being adjusted to another channel.
When you press the [s] button, the copy
confirmation screen is displayed.
* L: shows the channel being adjusted while R:
shows un-adjusted channels.
Holding down the [s] button for about 1
second copies the settings, and returns to the
previous screen.
To return to the previous screen without
copying the settings, press the [s] button.
●About correction
When the frequency characteristics are
measured by a measuring device, they do not
need to be corrected if the frequency
characteristics are flat (no ridges or valleys in
the frequency waveform). However, frequency
characteristics sometimes partially rise up or fall
down. If this happens, create a frequency curve
of inverse characteristics matched to the center
frequency of the ridges or valleys in the
frequency waveform. This corrects the frequency
characteristics so that they are flat.
"Correction" is the process or making frequency
characteristics as flat as possible.
Operations Common to Each Mode Operations Common to Each Mode
fo: Center frequency, G: gain (output level),
Q: Q-curve
Q-curve
12
Q-curve
0.5
Blinking
About correction of frequency
characteristics
The following figure shows the relationship
between center frequency, gain and Q-curve.
3dB
Q =
F
f
f
About Q-curve
The following figure and the table show the
relationship between center frequency, gain and
Q-curve.
When a large numerical value is set, the Q-
curve becomes sharper, and when a small
numerical value is set, the Q-curve becomes
gentler.
Flat frequency characteristics can be made by
selecting a Q-curve inverted to the frequency
curve to be corrected.
BAND
Parametric equalizer parameters
Left channel Right channel
fo G Q fo G Q
BAND1 50Hz*1 0dB 1 50Hz*1 0dB 1
BAND2 160Hz*1 0dB 1 160Hz*1 0dB 1
BAND3 500Hz*1 0dB 1 500Hz*1 0dB 1
BAND4 2kHz*2 0dB 1 2kHz*2 0dB 1
BAND5 8kHz*2 0dB 1 8kHz*2 0dB 1
*1 Select from range 50 Hz to 20 kHz
*2 Select from range 630 Hz to 20 kHz
Saving the filter setting/time
alignment setting/P.EQ setting
(MEMORY)
Three groups of adjustment settings made to
suit your car can be saved for both the Standard
mode and Multi mode.
∗ P.EQ settings are not saved when the Equalizer
mode is set to "BASS/TREB".
1. Press the [ADJ] button.
2. Press the [
] or [ ] button to select
"SOUND".
3. Press the [s] button.
4. Press the [
] or [ ] button to select
"MEMORY".
5. Press the [
] button.
6. Press the [
] or [ ] button to select
"MEMORY1", "MEMORY2", "MEMORY3" or
"DEFAULT".
∗ The factory default setting is "DEFAULT". This
setting can be called up but cannot be
changed to other settings.
7. Hold down the [s] button for about 1
second. "SAVE?" is displayed.
8. Hold down the [s] button for about 1
second. You will hear a short high-pitched
sound, and the filter settings, time alignment
settings and P.EQ settings are saved to the
memory (1 to 3) selected in step 6.
9. Press the [ADJ] button to return to the
previous mode.
●To call up saved settings
At step 7, press the [s] button, and hold
down the [s] button for about 1 second when
"LOAD?" is displayed.
You will hear a short high-pitched sound, and
the settings are called up. Press the [ADJ]
button to return to the previous mode.
∗ When the Equalizer mode is set to "BASS/TREB",
the P.EQ settings that are called up are reflected
when the Equalizer mode setting is changed to
"P.EQ".
●About settings after a reset
When the [RESET] button is pressed to reset
this unit, all settings set here disappear. Make a
note of the settings in the Sound Setup Memo
(page 34) to make these settings again after a
reset.
Selecting the equalizer mode
(EQ SELECT)
This item can be selected when the Audio mode
is the Standard mode or the Multi mode.
The factory default setting is "P.EQ".
●Parametric equalizer mode <P.EQ>
The sound field can be adjusted by the P.EQ of
five bands. For details on P.EQ adjustment, see
"Adjusting P.EQ" (page 21).
●Bass/treble mode <BASS/TREB>
The sound field can be adjusted by bass/treble.
For details on bass/treble adjustment, see
"Adjusting the bass/treble" (page 12).
1. Press the [ADJ] button.
2. Press the [
] or [ ] button to select "EQ
SELECT".
3. Press the [
] or [ ] button to select "P.EQ"
or "BASS/TREB".
4. Press the [ADJ] button to return to the
previous mode.
Setting the sub-woofer/non-fader
(SUB-WOOFER/NON-FADER)
Set to "ST" (stereo) or "MONO" (monaural)
when a sub-woofer/non-fader is connected.
There is no output when "OFF" is set.
* The factory default setting is "ST".
1. Press the [ADJ] button.
2. Press the [
] or [ ] button to select "SUB-
WOOFER" or "NON-FADER".
∗ Select "SUB-WOOFER" when the Audio
mode is the Standard mode or the Multi mode,
and "NON-FADER" when the Audio mode is
Direct mode.
3. Press the [ ] or [ ] button to select "ST"
(stereo), "MONO" (monaural) or "OFF".
4. Press the [ADJ] button to return to the
previous mode.
Gain (G)
Q-curve (Q)
Frequency
curve
Level
(dB)