Using The Auto-Equalizer; Auto Ta And Eq (Auto-Time Alignment And Auto-Equalizing) - Pioneer AVH-X8550BT Owner's Manual

System settings

Using the auto-equalizer

The auto-equalizer is the equalizer curve created
by auto TA and EQ (refer to Auto TA and EQ
(auto-time alignment and auto-equalizing) on
page 45).
You can turn the auto-equalizer on or off.
1 Press the home button to switch to the
home display.
2 Touch the DSP function key to open the
DSP function menu.
3 Touch Auto EQ.
# You cannot use this function if auto TA and EQ
have not been carried out.
4 Touch d to turn the auto-equalizer on.
# To turn the auto-equalizer off, touch c.
Auto TA and EQ (auto-time
alignment and auto-equalizing)
Auto-time alignment automatically adjusts the
time alignment according to the distance be-
tween the listening position and each speaker.
The auto-equalizer automatically measures the
car's interior acoustic characteristics, and then
creates an auto-equalizer curve based on that in-
formation.
WARNING
As a loud tone (noise) may be emitted from the
speakers when measuring the car's interior
acoustic characteristics, never perform auto TA
or auto EQ while driving.
CAUTION
! Thoroughly check the conditions before per-
forming auto TA and EQ as the speakers may
be damaged if these functions are performed
when:
— The speakers are incorrectly connected. (For
example, when a rear speaker is connected
as a subwoofer output.)
— A speaker is connected to a power amp deliv-
ering output higher than the speaker's maxi-
mum input power capability.
! If the microphone is placed in an unsuitable
position the measurement tone may become
loud and measurement may take a long
time, resulting in battery drainage. Be sure
to place the microphone in the specified lo-
cation.
Before operating the auto TA
and EQ function
! Perform auto TA and EQ in a quiet place,
with both the car engine and air conditioning
switched off. Also turn off any car phones or
portable telephones in the car, or remove
them from the car. Sounds other than the
measurement tone (such as surrounding
sounds, engine sound, telephones ringing)
may prevent correct measurement of the
car's interior acoustic characteristics.
! Be sure to perform auto TA and EQ using the
optional microphone. Using another micro-
phone may prevent measurement, or result
in incorrect measurement of the car's interi-
or acoustic characteristics.
! In order to perform auto TA and EQ, the front
speaker must be connected.
! When this unit is connected to a power amp
with input level control, auto TA and EQ may
not be possible if the power amp's input level
is set below the standard level.
System settings
! When this unit is connected to a power amp
with an LPF, turn this LPF off before perform-
ing auto TA and EQ. Also set the cut-off fre-
quency for the built-in LPF of an active
subwoofer to the highest frequency.
! The time alignment value resulting from auto
TA and EQ has been calculated by a com-
puter and is the optimum delay time that will
give accurate results. Be sure to use the re-
sulting value although it may differ from the
actual distance when:
— The reflected sound within the car is
strong and delays occur.
— The LPF on active subwoofers or external
amps delay the lower sounds.
! Auto TA and EQ changes the audio settings
as follows:
— The fader/balance settings return to the
center position. (Refer to Using fader/bal-
ance adjustment on page 34.)
— The equalizer curve switches to Flat.
(Refer to Recalling equalizer curves on
page 32.)
— The front, center and rear speakers will
automatically be adjusted to a high pass
filter setting.
! Previous settings for auto TA and EQ will be
overwritten.
Performing auto TA and EQ
For details concerning operation, refer to the op-
eration manual for the multi-channel processor.
1 Stop the car in a place that is quiet, close
all the doors, windows and sun roof, and
then turn the engine off.
If the engine is left running, engine noise may
prevent correct auto EQ.
2 Fix the optional microphone in the center
of the headrest of the driver's seat, facing
forward.
The auto EQ may differ depending on where you
place the microphone. If desired, place the mi-
crophone on the front passenger seat to carry
out auto EQ.
3 Turn the ignition switch to ON or ACC.
If the car's air conditioner or heater is turned on,
turn it off. Noise from the fan in the air condi-
tioner or heater may prevent correct auto EQ.
# If this unit is turned off, press SRC/OFF to turn
the source on.
4 Select the position for the seat on which
the microphone is placed.
Refer to Using the position selector on page 34.
# If no position is selected before you start auto
EQ, Front-L is selected automatically.
5 Turn the source off.
Refer to Turning the source ON/OFF on page 7.
6 Press the home button to switch to the
home display.
7 Touch the system key to open the system
menu.
8 Touch A-EQ&TA Measurement to enter
auto EQ and TA measurement mode.
Section
18
45
En