Kenwood Xr900 5 Manual

							Safety precautions
 WARNING
To prevent injury or fire, take the following 
precautions:
•  Mounting and wiring this product requires skills and 
experience. For safety’s sake, leave the mounting and 
wiring work to professionals.
•  When extending the ignition, battery, or ground wires, 
make sure to use automotive-grade wires or other wires 
with the range of 14 mm2 (AWG 6) to 21 mm2 (AWG 4) 
to prevent wire deterioration and damage to the wire 
coating.
•  To prevent a short circuit, never put or leave any metallic 
objects (such as coins or metal tools) inside the unit.
•  If the unit starts to emit smoke or strange smells, turn 
off the power immediately and consult your Kenwood 
dealer.
•  Do not touch the unit during use because the surface of 
the unit becomes hot and may cause burns if touched. CAUTION
To prevent damage to the machine, take the following 
precautions:
•  Be sure the unit is connected to a 12V DC power supply 
with a negative ground connection.
•  Do not open the top or bottom covers of the unit.
•  Do not install the unit in a spot exposed to direct 
sunlight or excessive heat or humidity. Also avoid places 
with too much dust or the possibility of water splashing.
•  When replacing a fuse, only use a new one with the 
prescribed rating. Using a fuse with the wrong rating 
may cause your unit to malfunction.
•  To prevent a short circuit when replacing a fuse, first 
disconnect the wiring harness.
NOTE
•  If you experience problems during installation, consult 
your Kenwood dealer.
•  If the unit does not seem to be working right, consult 
your Kenwood dealer.
Cleaning the unitIf the front panel gets dirty, turn off the power and wipe 
the panel with a dry silicon cloth or soft cloth.
 CAUTION
Do not wipe the panel with a hard cloth or a cloth 
dampened by volatile solvents such as paint thinner and 
alcohol. They can scratch the surface of the panel and/or 
cause the indicator letters to peel off.To prevent battery riseWhen the unit is used in the ACC ON position without 
turning the engine ON, it depletes the battery. Use it after 
starting the engine.
Protection functionThe protection function is activated in the following 
situations:
This unit is equipped with a protection function for 
protecting this unit and your speakers from various 
accidents or problems that can occur.
When the protection function is triggered, the power 
indicator goes off and the amplifier stops operating.
•  When a speaker wire may be short-circuited.
•  When a speaker output contacts ground.
•  When the unit malfunctions and a DC signal is sent to 
the speaker output.
•  When the internal temperature is high and unit won’t 
operate.7 Wiring•  Take the battery wire for this unit directly from the 
battery. If it's connected to the vehicle’s wiring harness, it 
can cause blown fuses etc.
•  If a buzzing noise is heard from the speakers when the 
engine is running, connect a line noise filter (optional) to 
each of the battery wire.
•  Do not allow the wire to directly contact the edge of the 
iron plate by using Grommets.
•  Connect the ground wire to a metal part of the car 
chassis that acts as an electrical ground passing 
electricity to the battery‘s negative · terminal. Do not 
turn the power on if the ground wire is not connected.
•  Be sure to install a protective fuse in the power cord 
near the battery. The protective fuse should be the same 
capacity as the unit’s fuse capacity or somewhat larger.
•  For the power cord and ground, use a vehicle type 
(fireproof ) power wring cord. (Use a power wiring cord 
with the range of 14 mm2 (AWG 6) to 21 mm2 (AWG 4). 
•  When more than one power amplifier are going to be 
used, use a power supply wiring wire and protective 
fuse of greater current-handling capacity than the total 
maximum current drawn by each amplifier.7 Speaker selection•  Using speakers with smaller input ratings than the 
amplifier’s output power would result in smoke 
generation or equipment failure.
•  The impedance of the speakers that are going to 
be connected should be 2Ω or greater (for stereo 
connections, amplifier SUB), or 4Ω or greater (for bridged 
connections). When more than one set of speakers are 
going to be used, calculate the combined impedance of 
the speakers and then connect suitable speakers to the 
amplifier.
 
2Ω
8Ω
4Ω
4Ω 4Ω
4ΩCombined impedance
Installation / 
½
Connection / 
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7 Installation procedureSince there are large variety of settings and 
connections possible according to applications, 
read the instruction manual well to select the 
proper setting and connection.
1.  Remove the ignition key and disconnect the 
negative · terminal of the battery to prevent 
short circuits. 
2.  Set the unit according to the intended usage.
3.  Remove the Dressing cover.
4.  Connect the input and output wires of the 
units.
5.  Connect the speaker wires.
6.  Connect the power wire, power control wire 
and grounding wire following this order.
7.  Install the installation fittings in the unit.
8.  Attach the unit.
9.  Attach the Dressing cover.
10.  Connect the negative · terminal of the 
battery.
 CAUTION
•  Do not install in the below locations;
(Unstable location, In a location that interferes 
with driving, In a location that gets wet, In a 
dusty location, In a place that gets hot, In a place 
that gets direct sunlight, In a location that gets 
hit by hot air)
•  Do not install the unit under the carpet. 
Otherwise heat build-up occurs and the unit 
may be damaged.
•  Install this unit in a location which allows heat to 
easily dissipate.
Once installed, do not place any object on top 
of the unit.
•  The surface temperature of the amplifier will 
become hot during use. Install the amplifier in a 
place where people, resins, and other substances 
that are sensitive to heat will not come into 
contact with it.
•  This unit has cooling fan to decrease the internal 
temperature. Do not mount the unit in a place 
where the cooling fan and ducts of the unit are 
blocked. Blocking these openings will inhibit the 
cooling of the internal temperature and result in 
malfunction.
•  When making a hole under a seat, inside the 
trunk, or somewhere else in the vehicle, check 
that there is nothing hazardous on the opposite 
side such as a gasoline tank, brake pipe, or wiring 
harness, and be careful not to cause scratches or 
other damage.
•  Do not install near the dashboard, rear tray, or air 
bag safety parts.
•  The installation to the vehicle should securely 
fasten the unit to a place in which it will not 
obstruct driving. If the unit comes off due to a 
shock and hits a person or safety part, it may 
cause injury or an accident.
•  After installing the unit, check to make sure that 
electrical equipment such as the brake lamps, 
turn signal lamps and windshield wipers operate 
normally.
7 ½
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Troubleshooting guideWhat might appear to be a malfunction in your unit may just be the result of slight misoperation or miswiring. 
Before calling service, first check the following table for possible problems.PROBLEM POSSIBLE CAUSE SOLUTIONNo sound.
(No sound from one 
side.)
(Blown fuse.)•  Input (or output) cables are disconnected.
•  Protection circuit may be activated.
•  Volume is too high.
•  The speaker cord is shorted.•  Connect the input (or output) cables.
•  Check connections by referring to 
.
•  Replace the fuse and use lower volume.
•  After check the speaker cord and fixing the 
cause of the short, replace the fuse.
The output level is too 
small (or too large).•  The input sensitivity adjusting control is 
not set to the correct position.•  Adjust the control correctly referring to 
.
The sound quality is 
bad.
(The sound is distorted.)•  The speakers wire are connected with 
wrong ª/· polarity.
•  A speaker wire is pinched by a screw in 
the car body.
•  The switches may be set improperly.•  Connect them properly checking the ª/· 
of the terminals and wires well.
•  Connect the speaker wire again so that it is 
not pinched by anything.
•  Set switches properly by referring to 
. #p_©C`