Black plate (155,1)
CAUTION
!
Thoroughly check the conditions before per-
forming Auto EQ, as the speakers may be da-
maged if this is performed under the following
conditions:
—
When the speakers are incorrectly con-
nected. (For example, 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 capabil-
ity.
!
If a microphone for acoustical measurement
(sold separately) is not placed in an appropri-
ate location, the measurement tone may be-
come loud and measurement may take a long
time, resulting in battery drainage. Be sure to
place the microphone in the specified loca-
tion.
Before operating the Auto EQ
function
!
Perform Auto EQ in as quiet a place as pos-
sible, with the vehicle engine and air condi-
tioning switched off. Also, cut power to car
phones or mobile phones in the vehicle, or
remove them from the vehicle before per-
forming Auto EQ. Sounds other than the
measurement tone (surrounding sounds,
engine sound, telephones ringing, etc.)
may prevent correct measurement of the
vehicle
’
s acoustics.
!
Be sure to perform Auto EQ using the mi-
crophone for acoustical measurement
(sold separately). Using another micro-
phone 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 navigation system 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 navigation system is connected
to a power amp with an LPF (low pass fil-
ter), 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 com-
puter 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 exter-
nal amps delay the lower sounds.
!
If an error occurs during measurement, a
message appears and measurement is
cancelled. Check the following before mea-
suring the vehicle
’
s acoustics.
—
Front speakers (left/right)
—
Rear speakers (left/right)
—
Noise
—
Microphone for acoustical measure-
ment (sold separately)
—
Low battery
Performing Auto EQ
p
Auto EQ changes the audio settings as fol-
lows:
!
“
Auto EQ
”
on the
“
EQ Menu
”
screen is
set to
“
On
”
.
=
For details, refer to
!
The fader/balance settings return to the
centre position.
=
For details, refer to
!
The equaliser curve switches to
“
Flat
”
.
=
For details, refer to
!
The front and rear speakers will automa-
tically be adjusted to a high pass filter
setting.
p
Previous settings for Auto EQ will be over-
written.
p
For AVIC-F50BT users
<CRB4228-A>155
Engb
155
Chapter
26
Customising
pr
eferences
Customising preferences
