51
power to car phones or cellular phones in the vehicle, or
remove them in advance. Surrounding sounds may prevent
correct measurement of the vehicle’s acoustics.
Be sure to use the microphone for acoustical measurement
(sold separately). Using another microphone may prevent
measurement, or result in incorrect measurement of the
vehicle’s acoustics.
To perform Auto EQ, the front speakers must be connected.
When this product is connected to a power amp with input
level control, Auto EQ may be impossible if the power amp’s
input level is set below the standard level.
When this product is connected to a power amp with an LPF
(low pass filter), turn the LPF off before performing Auto EQ.
Also, set the cut-off frequency for the built-in LPF of an active
subwoofer to the highest frequency.
The distance has been calculated by a computer to provide
optimum delay to ensure accurate results. Do not change
this value.
— The reflected sound within the vehicle is strong and delays
occur.
— The LPF on active subwoofers or external amps delay the
lower sounds.
If an error occurs during measurement, check the following
before measuring the vehicle’s acoustics.
— Front speakers (left/right)
— Rear speakers (left/right)
— Noise
— Microphone for acoustical measurement (sold separately)
— Low battery
Performing Auto EQ
CAUTION
Do not turn off the engine while the measurement is in
progress.
p
Auto EQ changes the audio settings as follows:
— The fader/balance settings return to the center position.
Refer to
Using fader/balance adjustment
on page 49
— “
Mute Level
” is set to “
Off
”.
Refer to
Switching sound muting/attenuation
on page 49
p
Previous settings for Auto EQ will be overwritten.
1 Stop the vehicle in a quiet place, 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.
p
If driving restrictions are detected during measurement,
measurement is canceled.
2 Fix the microphone for acoustical measurement
(sold separately) in the center of the headrest
of the driver’s seat, facing forward.
The Auto EQ may differ depending on where you place the micro-
phone. If desired, place the microphone on the front passenger
seat and perform Auto EQ.
3 Disconnect the iPhone or smartphone device.
4 Turn on the ignition switch (ACC ON).
If the vehicle’s air conditioner or heater is turned on, turn it off.
5 Turn the source off.
Refer to
Selecting a source
on page 12
6 Display the “
Audio
” setting screen.
Refer to
Displaying the “
Audio
” setting screen
on page 49
7 Touch [
A-EQ&TA Measurement
].
8 Connect the microphone for acoustical mea-
surement (sold separately) with this product.
Plug the microphone into the auto EQ microphone input jack on
this product.
Refer to
Checking part names and functions
on page 7
p
Use an extension cable (sold separately) if the cord of the
Microphone (sold separately) is not long enough.
9 Touch [
Front Left
] or [
Front Right
] to select the
current listening position.
10 Touch [
Start
].
A 10-second countdown starts.
p
The Bluetooth connection is disconnected before the pro-
cess starts.
11 Exit the vehicle and keep the doors closed until
the countdown finishes.
When the countdown finishes, a measurement tone (noise)
is emitted from the speakers and the Auto EQ measurement
begins.
12 Wait until the measurement is completed.
When Auto EQ is completed, a message is displayed.
p
The measurement time varies depending on the type of
vehicle.
To stop the measurement, touch [
Stop
].
13 Store the microphone carefully in the glove
compartment or another safe place.
If the microphone is subjected to direct sunlight for an extended
period, high temperatures may cause distortion, color change
or malfunction.
Displaying the “Theme” setting
screen
1 Press the button.
2 Touch , and then
.
Selecting the wallpaper
The wallpaper can be selected from some preset items.
Furthermore, you can set your original pictures.
1 Display the “
Theme
” screen.
Refer to
Displaying the “
Theme
” setting screen
on page 51
2 Touch [
Background
].
3 Touch [
Home
] or [
AV
] to switch the screen
displays.
The setting contents can be memorized separately for the AV
operation screen and the top menu screen.
4 Touch the item.
Preset displays: Selects the desired preset background
display.
(custom): Displays the background display image
imported from the external storage device.
Refer to
Changing to the wallpaper stored on the external
storage device
on page 51
(off): Hides the background display.
Changing to the wallpaper stored on
the external storage device
CAUTION
Do not turn off the engine while importing an image from the
external storage device.
p
Background display image must be used within the follow-
ing formats.
— JPEG image files (.jpg or .jpeg)
— Allowable data size is 10 MB or smaller
— Allowable image size is 4 000 pixels × 4 000 pixels or
smaller
1 Set the external storage device.
Refer to
Inserting and ejecting an SD memory card
on page
Refer to
Plugging and unplugging a USB storage device
on
2 Display the “
Theme
” screen.
Theme menu
p
If you trail a finger across the bars of multiple equalizer
bands, the equalizer curve settings will be set to the value of
the touched point on each bar.
Setting the auto-adjusted equalizer
You can set the auto-adjusted equalizer to suit the vehicle’s
acoustics. To use this function, the Auto EQ measurement must
be done in advance.
Refer to
Adjusting the equalizer curve automatically (Auto EQ)
on page 50
The default setting is “
Off
”.
1 Display the “
Audio
” setting screen.
Refer to
Displaying the “
Audio
” setting screen
on page 49
2 Touch [
Auto EQ&TA
] to switch “
On
” or “
Off
”.
Adjusting the equalizer curve
automatically (Auto EQ)
By measuring the vehicle’s acoustics, the equalizer curve can be
adjusted automatically to suit the vehicle interior.
WARNING
A loud tone (noise) may be emitted from the speakers when
measuring the vehicle’s acoustics. Never perform Auto EQ
measurement while driving.
CAUTION
Thoroughly check the conditions before performing Auto
EQ, as the speakers may be damaged if this is performed
under the following conditions:
—
When the speakers are incorrectly connected. (For exam-
ple, when a rear speaker is connected as a subwoofer
output.)
—
When a speaker is connected to a power amp delivering
output higher than the speaker’s maximum input power
capability.
If a microphone for acoustical measurement (sold
separately) is not placed in an appropriate location, 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 location.
Before operating the Auto EQ
function
Perform Auto EQ in as quiet a place as possible, with the
vehicle engine and air conditioning switched off. Also, cut
51
< CRD4943-A >
Audio adjustments
Audio adjustments
Theme menu
Summary of Contents for avh-4200nex
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