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20En
Perform these connections when using a
subwoofer without the optional amplifier.
To power cord input
Left
Right
Front speaker
Rear speaker
White
White/black
Gray
Gray/black
Green
Green/black
Violet
Violet/black
Black (chassis ground)
Connect to a clean, paint-free metal
lo
cation.
Yel low
Connect to the constant 12 V supply
te
rminal.
Red
Connect to terminal controlled by the
igni
tion switch (12 V DC).
Blue/white
Connect to the system control terminal
o
f the power amp or auto-antenna relay
control terminal (max. 300 mA 12 V DC).
Subwoofer (4 Ω)
When using a subwoofer of 70 W (2 Ω),
be sure to connect the subwoofer to the
vi
olet and violet/black leads of this unit.
Do not connect anything to the green
and green/black leads.
Not used.
Subwoofer (4 Ω) × 2
Orange/white
Connect to a car’s illumination signal.
Yellow/black (Only for FH-X520UI)
If you use equipment with a Mute
f
unction, wire this lead to the Audio
Mute lead on that equipment. If not,
keep the Audio Mute lead free of any
connections.
NOTE
Change the initial menu of this unit. Refer
t
o [SP-P/O MODE] (page 7). The subwoofer
output of this unit is monaural.
Power amp (sold separately)
Perform these connections when using the
optional amplifier.
System remote control
Connect to blue/white cable.
Power amp (sold separately)
Connect with RCA cables (sold
separately)
To rear output
Rear speaker
To front output
Front speaker
To subwoofer output
Subwoofer
To rear output or subwoofer output
Rear speaker or subwoofer
Important
• C
heck all connections and systems before
final installation.
• D
o not use unauthorized parts as this
may cause malfunctions.
• C
onsult your dealer if installation requires
drilling of holes or other modifications to
the vehicle.
• Do
not install this unit where:
–it may interfere with operation of the
ve
hicle.
–it may cause injury to a passenger as a
resu
lt of a sudden stop.
• T
he semiconductor laser will be damaged
if it overheats. Install this unit away from
hot places such as near the heater outlet.
• O
ptimum performance is
obtained when the unit is
installed at an angle of less
than 60°.
• W
hen installing, to ensure proper heat
dispersal when using this unit, make sure
you leave ample space behind the rear
panel and wrap any loose cables so they
are not blocking the vents.
FH-X820BS
FH-X720BT/X721BT/X520UI
Installation
Leave ample
space
5 cm
5 cm
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