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Perform these connections when using a
subwoofer without the optional amplifier.
5 cm
Leave ample
space
5 cm
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
Connect to the system control terminal
of the power amp or auto-antenna relay
control terminal (max. 300 mA 12 V DC).
Subwoofer (4 Ω)
When using a subwoofer of 2 Ω, be sure
to connect the subwoofer to the violet
and violet/black leads of this unit. Do
not connect anything to the green and
green/black leads.
Not used.
Subwoofer (4 Ω) × 2
Installation
NOTE
Change the initial menu of this unit. Refer
to [REAR-SP]/[SP-P/O MODE]. The
subwoofer output of this unit is monaural.
DIN mount installation
1 Insert the supplied mounting sleeve
into the dashboard.
2 Secure the mounting sleeve by using a
screwdriver to bend the metal tabs
(90°) into place.
Important
In the case of
above, two 4 Ω
subwoofers wired in parallel will represent
a 2 Ω load.
Power amp (sold separately)
Perform these connections when using the
optional amplifier.
DEH-S1253UB
DEH-S1252UB/S1250UB
Dashboard
Mounting sleeve
• Make sure that the unit is installed
securely in place. An unstable
installation may cause skipping or
other malfunctions.
When not using the supplied
mounting sleeve
1 Determine the appropriate position
where the holes on the bracket and
the side of the unit match.
Important
• Check all connections and systems before
final installation.
• Do not use unauthorized parts as this
may cause malfunctions.
• Consult 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
vehicle.
–it may cause injury to a passenger as a
result of a sudden stop.
• The semiconductor laser will be damaged
if it overheats. Install this unit away from
hot places such as near the heater outlet.
• Optimum performance is
obtained when the unit is
installed at an angle of less
than 60°.
• When 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.
2 Tighten two screws on each side.
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
location.
Yellow
Connect to the constant 12 V supply
terminal.
Red
Connect to terminal controlled by the
ignition switch (12 V DC).
Blue/white
System remote control
Connect to blue/white cable.
6 En