To ensure proper use, please read through this
manual before using this product. It is especially important that you read and observe
WARNINGs and CAUTIONs in this manual.
Please keep the manual in a safe and accessible
place for future reference.
Information to User
Alteration or modifications carried out without
appropriate authorization may invalidate the
user’s right to operate the equipment.
After-sales service for
Pioneer products
Please contact the dealer or distributor from
where you purchased this unit for after-sales
service (including warranty conditions) or any
other information. In case the necessary information is not available, please contact the
companies listed below:
Please do not ship your unit to the companies
at the addresses listed below for repair without
advance contact.
USA&CANADA
Pioneer Electronics (USA) Inc.
CUSTOMER SUPPORT DIVISION
P.O. Box 1760
Long Beach, CA 90801-1760
800-421-1404
For warranty information please see the Limited Warranty sheet included with this unit.
If you experience problems
Should this product fail to operate properly,
please contact your dealer or nearest authorized Pioneer Service Station.
Visit our website
http://www.pioneerelectronics.com
in Canada
http://www.pioneerelectronics.ca
! Learn about product updates (such as firm-
ware updates) for your product.
! Register your product to receive notices
about product updates and to safeguard
purchase details in our files in the event of
loss or theft.
! Access owner’s manuals, spare parts infor-
mation, service information, and much
more.
The Safety of Your Ears is in
Your Hands
Get the most out of your equipment by playing
it at a safe level—a level that lets the sound
come through clearly without annoying blaring or distortion and, most importantly, without affecting your sensitive hearing. Sound
can be deceiving. Over time, your hearing
“comfort level” adapts to higher volumes of
sound, so what sounds “normal” can actually
be loud and harmful to your hearing. Guard
against this by setting your equipment at a
safe level BEFORE your hearing adapts.
ESTABLISH A SAFE LEVEL:
! Set your volume control at a low setting.
! Slowly increase the sound until you can
hear it comfortably and clearly, without distortion.
! Once you have established a comfortable
sound level, set the dial and leave it there.
BE SURE TO OBSERVE THE FOLLOWING
GUIDELINES:
! Do not turn up the volume so high that you
can’t hear what’s around you.
! Use caution or temporarily discontinue use
in potentially hazardous situations.
! Do not use headphones while operating a
boat; the use of headphones may create a
traffic hazard and is illegal in many areas.
Before connecting/
installing the amplifier
WARNING
! This product contains chemicals known to the
State of California and other governmental entities tocause cancer and birth defects or
other reproductive harm. Wash hands after
handling.
! To prevent fire hazard, the heatsink should
never be covered with items (such as papers,
cloths).
! This unit is for the boats with a 12 V battery
and negative grounding. Before installing,
check the battery voltage.
! When installing this unit, make sure to con-
nect the ground wire first. Ensure that the
ground wire is properly connected to the
metal parts of the boat body. The ground wire
of the one of this unit must be connected to
the boat separately with different screws. If
the screw for the ground wire loosens or falls
out, it could result in fire, generation of smoke
or malfunction.
! Be sure to install the fuse to the battery wire.
! Always use a fuse of the rating prescribed.
The use of an improper fuse could result in
overheating and smoke, damage to the product and injury, including burns.
! Check the connections of the power supply
and speakers if the fuse of the separately sold
battery wire or the amplifier fuse blows. Deter-
mine and resolve the cause, then replace the
fuse with and identical equivalent.
! Always install the amplifier on a flat surface.
Do not install the amplifier on a surface that
is not flat or on a surface with a protrusion.
Doing so could result in malfunction.
! When installing the amplifier, do not allow
parts such as extra screws to get caught between the amplifier and the boat. Doing so
could cause malfunction.
! Do not allow this unit to come into contact
with liquids. Electrical shock could result.
Also, damage to this unit, smoke, and overheating could result from contact with liquids.
The surfaces of the amplifier and any attached
speakers may also heat up and cause minor
burns.
! In the event of any abnormality, the power
supply to the amplifier is cut off to prevent
equipment malfunction. If this occurs, switch
the system power off and check the power
supply and speaker connections. If you are unable to determine the cause, please contact
your dealer.
! Always disconnect the negative * terminal of
the battery beforehand to avoid the risk of
electric shock or short circuit during installation.
! Do not attempt to disassemble or modify this
unit. Doing so may result in fire, electric
shock or other malfunction.
! Although this amplifier is designed specially
for marine applications, it is not submersible.
Do not install it in places that are prone to getting wet.
! Do not install in places under direct sunlight,
places exposed to extreme heat or high humidity, or places that will get wet.
! Attach a cover or cap to the terminals, and
prevent them from getting wet.
! Install the amplifier in a dry and well-venti-
lated environment, where other electrical appliances installed on the boat will not interfere
with it.
<KYTZ19B>
<5707000013400V> UC
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1
Before yo u startSetting the unit
Setting the unit
Connecting the units
Connecting the units
! When under direct sunlight with the cover on
for long hours, the cockpit area may have extremely high temperatures. Allows the area to
cool down after cover has been removed before using amplifier.
CAUTION
! Always keep the volume low enough to hear
outside sounds.
! Extended use of the stereo while the engine is
at rest or idling may exhaust the battery.
! This product is evaluated in moderate and tro-
pical climate condition under the Audio, video
and similar electronic apparatus - Safety requirements, IEC 60065.
! The graphical symbol
product means direct current.
placed on the
About the protection function
This product has protection function. When this
product detects something abnormal, the following functions will operate to protect the product
and speaker output.
! The POWER/PROTECT indicator will turn red
and the amplifier will shut down in the situations outlined below.
— If the temperature inside the amplifier gets
too high.
— If a DC voltage is applied to the speaker
output terminal.
! The POWER/PROTECT indicator will turn red
and the output will be muted in the situations
outlined below.
— If the speaker output terminal and speaker
wire are short-circuited.
Important (Serial number)
The serial number is located on the bottom of
this unit. For your own security and convenience,
be sure to record this number on the enclosed
warranty card.
What’s what
Front side
3
4
2
Rear side
To adjust the switch, use a flathead screwdriver if needed.
1 FREQ (cut off frequency) control
Cut off frequency selectable from 40 Hz to
500 Hz if the LPF/HPF select switch is set to
LPF or HPF.
2 GAIN (gain) control
Adjusting gain controls CHANNEL A (channel A) and CHANNEL B (channel B) helps
align the stereo output to the Pioneer amplifier. Default setting is the NORMAL position.
If the output remains low, even when the
stereo volume is turned up, turn the controls to a lower level. If distortion occurs
when the stereo volume is turned up, turn
these controls to a higher level.
! If using only one input plug, set the gain
controls for speaker outputs A and B to
the same position.
! For use with an RCA equipped stereo
(standard output of 500 mV), set to the
NORMAL position. For use with an RCA
equipped Pioneer stereo, with maximum
output of 4 V or more, adjust level to
match that of the stereo output.
Switch the settings based on the connected
speaker.
! When the Subwoofer is connected:
Select LPF. This eliminates high range
frequency and outputs low range frequency.
! When the full range speaker is con-
nected:
Select HPF or OFF. HPF eliminates low
range frequency and output high range
frequency. OFF outputs the entire frequency range.
4 INPUT SELECT (input select) switch
Select 2CH for two-channel input and 4CH
for four–channel input.
5 POWER/PROTECT indicator
The power indicator lights up to indicate
power ON.
! If something is not normal, the indicator
turns red.
Setting gain properly
! Protective function included to prevent
malfunction of the unit and/or speakers
due to excessive output, improper use or
improper connection.
! When outputting high volume sound etc.,
this function cuts off the output for a few
seconds as a normal function, but output
is restored when the volume of the head
unit is turned down.
! A cut in sound output may indicate impro-
per setting of the gain control. To ensure
continuous sound output with the head
unit at a high volume, set amplifier gain
control to a level appropriate for the preout
maximum output level of the head unit, so
that volume can remain unchanged and to
control excess output.
! Despite correct volume and gain settings,
the unit sound still cuts out periodically. In
such cases, please contact the nearest
authorized Pioneer Service Station.
Gain control of this unit
Preout level: 2 V (Standard: 500 mV)
Preout level: 4 V
Above illustration shows NORMAL gain setting.
Relationship between amplifier gain
and head unit output power
If amplifier gain is raised improperly, this will
simply increase distortion, with little increase
in power.
Signal waveform when outputting at
high volume using amplifier gain
control
If the signal waveform is distorted due to high
output, even if the amplifier gain is raised, the
output power will change only slightly.
Connection diagram
7
3
2
5
1
g
1 Battery wire (sold separately)
d
f
! The maximum length of the wire be-
tween the fuse and the positive + terminal of the battery is 30 cm (12 in.).
! For the wire size, refer to Connecting the
power terminal. The batter y wire, the
ground wire and the optional direct
ground wire must be same size. After
making all other connections at the amplifier, connect the battery wire terminal
of the amplifier to the positive + terminal of the battery.
If only one input plug is used, do not connect
anything to RCA input jack B.
9 Connecting wire with RCA pin plugs (sold se-
parately)
a RCA input jack A
b RCA input jack B
c Amplifier with RCA input jacks (sold sepa-
rately)
d RCA output jack
Outputs the signal input to CH A.
e Speaker output terminals
h
i
Please see the following section for speaker
connection instructions. Refer to Connectionswhen using the speaker input wire.
f System remote control wire (sold separately)
g Fuse (30 A) × 2
h Front side
i Rear side
Note
INPUT SELECT (input select) switch must be set.
For details, see Setting the unit.
! Never wire the speaker negative cable directly
to ground.
! Never band together multiple speaker’s nega-
tive cables.
! If the system remote control wire of the ampli-
fier is connected to the power terminal via the
ignition switch (12 V DC), the amplifier will remain on with the ignition whether the stereo
is on or off, which may exhaust battery if the
engine is at rest or idling.
! Install and route the separately sold battery
wire as far as possible from the speaker wires.
Install and route the separately sold battery
wire, ground wire, speaker wires and the amplifier as far away as possible from the antenna, antenna cable and tuner.
About bridged mode
! For any further enquiries, contact your local
authorized Pioneer dealer or customer
service.
About suitable
specification of speaker
Ensure speakers conform to the following
standards, otherwise there is a risk of fire,
smoke or damage. Speaker impedance is 2 W
to 8 W,or4W to 8 W for two-channel and other
bridge connections.
Subwoofer
Speaker channelPower
Four-channel output
Two-channel output
Three-channel
output
Speaker outputANominal input:
Speaker outputBNominal input:
Nominal input:
Min. 75 W
Nominal input:
Min. 200 W
Min. 75 W
Min. 200 W
Other than subwoofer
Before connecting the
amplifier
WARNING
! Secure the wiring with cable clamps or adhe-
sive tape. To protect the wiring, wrap sections
in contact with metal parts in adhesive tape.
! Never cut the insulation of the power supply
to feed power to other equipment. Current capacity of the wire is limited.
CAUTION
! To prevent water from entering the amplifier,
attach a cover or cap to each terminal when
not in use.
! Never shorten any wires, the protection circuit
may malfunction.
! Do not install or use this amplifier by wiring
speakers rated at 2 W (or lower) in parallel to
achieve a 1 W (or lower) bridged mode (Diagram B).
Amplifier damage, smoke, and overheating
could result from improper bridging. The amplifier surface could also become hot to the
touch and minor burns could result.
To properly install or use a bridged mode and
achieve a 2 W load, wire two 4 W speakers in
parallel with Left + and Right * (Diagram A)
or use a single 2 W speaker.
In addition, refer to the speaker instruction
manual for information on the correct connection procedure.
Speaker channelPower
Four-channel output
Two-channel output
Three-channel
output
Speaker outputAMax. input:
Speaker outputBMax. input:
Max. input:
Min. 150 W
Max. input:
Min. 400 W
Min. 150 W
Min. 400 W
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Connecting the units
5
Connecting the units
Connecting the units
Connecting the unitsInstallation
Connecting the speakers
The speaker output mode can be four-channel,
three-channel (stereo and mono) or two-channel (stereo or mono). Connect the speaker
leads based on the mode and the figures
shown below.
Four-channel output
1
4
2
2
3
1
1 Left
2 Right
3 Speaker output A
4 Speaker output B
Two-channel output (Stereo)
1
2
1 Speaker output (Right)
2 Speaker output (Left)
Two-channel output (Mono)
1
1
1 Speaker output (Mono)
Three-channel output
1
3
2
4
1 Left
2 Right
3 Speaker output A
4 Speaker output B (Mono)
Connections when using
the RCA input jack
Connect the stereo RCA output jack and the
RCA input jack of the amplifier.
! The RCA output jack of this unit outputs
the signal that comes from The RCA input
jack A.
Four-channel / Three-channel output
! Slide INPUT SELECT (input select) switch
to 4CH position.
5
1 RCA input jack A
2 RCA input jack B
3 Connecting wires with RCA plugs (sold sepa-
rately)
4 From stereo (RCA output)
If only one input plug is used, e.g. when the
stereo has only one output (RCA output), connect the plug to RCA input jack A rather than
B.
5 INPUT SELECT (input select) switch (4CH po-
sition)
1
2
3
4
Two-channel output (Stereo) / (Mono)
! Slide INPUT SELECT (input select) switch
to 2CH position.
4
1 RCA input jack A
For two-channel output, connect the RCA
plugs to the RCA input jack A.
Connect the stereo speaker output wires to
the amplifier using the supplied speaker input
wire with RCA pin cord.
1 Stereo
2 Speaker output
3 Red: Right +
4 Black: Right *
5 Black: Left *
6 White: Left +
7 Speaker input wire with RCA pin cord
To the RCA input jack of this unit
Notes
! If speaker input wires from a headunit are
connected to this amplifier, the amplifier will
automatically turn on when the headunit is
turned on. When the headunit is turned off,
the amplifier turns off automatically. This
function may not work with some headunits.
In such cases, please use a system remote
control wire (sold separately). If multiple amplifiers are to be connected together synchronously, connect the head unit and all
amplifiers via the system remote control wire.
! This amplifier automatically selects an input
signal mode between the RCA level and the
speaker level by detecting an input signal.
Solderless terminal
connections
! Since the wire may become loose over
time, it must be periodically inspected and
tightened as necessary.
! Do not solder or bind the ends of the
twisted wires.
! Fasten while making sure to not to clamp
the insulating sheath of the wire.
! Use the supplied hexagonal wrench to
tighten and loosen the terminal screw of
the amplifier and use it to securely fasten
the wire. Be careful to avoid excessive tightening of this screw, which may damage
the wire.
Connecting the power terminal
WARNING
If the battery wire is not securely fixed to the terminal using the terminal screws, there is a risk of
overheating, malfunction and injury, including
minor burns.
! Always use the recommended battery and
ground wire, which is sold separately. Connect the battery wire directly to the boat
battery positive (+) terminal and the
ground wire to the boat body.
! Recommended wires size (AWG: American
Wire Gauge) is as follows. The battery wire,
the ground wire and the optional direct
ground wire must be same size.
! Use a wire of 12 AWG to 16 AWG wire for
the speaker wire.
1 Route battery wire from engine compartment to the boat interior.
! When drilling a cable pass-thru into a bulk
head or barrier wall, route the cable
through carefully and seal the hole to prevent fumes from seeping from engine compartment to other areas.
After completing all other amplifier connections, finally connect the battery wire terminal
of the amplifier to the positive + battery terminal.
The maximum length of the wire between
the fuse and the positive + terminal of the
battery is 30 cm (12 in.).
3 Fuse (60 A) (sold separately)
Each amplifier must be separately fused at
60 A.
3
2 Use wire cutters or a utility knife to
strip the end of the battery wire, ground
wire and system remote control wire to expose about 10 mm (3/8 in.) of the end of
each of the wires, and then twist the exposed ends of the wires.
Twist
10 mm (3/8 in.)
3 Connect the wires to the terminal.
Fix the wires securely with the terminal
screws.
6
4
7
2
1
3
1 Battery wire
2 Power terminal
3 Ground wire
4 GND terminal
5 System remote control wire
6 System remote control terminal
7 Terminal screws
Connecting the speaker output
terminals
1 Use wire cutters or a utility knife to
strip the end of the speaker wires to expose about 10 mm (3/8 in.) of wire and
then twist the wire.
Twist
10 mm (3/8 in.)
2 Connect the speaker wires to the
speaker output terminals.
parts in the manner specified. If any parts
other than those supplied are used, they may
damage internal parts of the amplifier, or become loose causing the amplifier to shut
down.
! Do not install in:
— Places where injury could occur if the boat
stops suddenly.
— Places where it may interfere with the
boat's operator.
! Install tapping screws in such a way that the
screw tip does not touch any wire. This is important to prevent wires from being cut by vibration of the boat, which can result in fire.
! Make sure that wires do not get caught in the
sliding mechanism or touch the legs of a person in the boat as short-circuit may result.
! When drilling to install the amplifier, always
confirm no parts are behind the panel and
protect all cables and important equipment
(e.g. cables, wiring, hoses, and modules) from
damage.
CAUTION
! To ensure proper heat dissipation of the ampli-
fier, ensure the following during installation:
— Allow adequate space above the amplifier
for proper ventilation.
— Do not cover the amplifier.
! Place all cables away from hot places, such
as near the heater outlet.
! The optimal installation location differs de-
pending on the boat model. Secure the amplifier at a sufficiently rigid location.
! Check all connections and systems before
final installation.
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