! 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 ap-
pliances installed on the boat will not interfere
with it.
! When under direct sunlight with the cover on
for long hours, the cockpit area may have ex-
tremely high temperatures. Allows the area to
cool down after cover has been removed be-
fore 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 re-
quirements, IEC 60065.
! The graphical symbol
placed on the
product means direct current.
! Connect either of three subwoofers to the am-
plifier; 1: a subwoofer with a 300 W or larger
nominal input and an impedance 4 W, 2: a
subwoofer with a 500 W or larger nominal
input and an impedance 2 W, or 3: a subwoofer
with a 800 W or larger nominal input and an
impedance 1 W.
If the nominal input and impedance are out of
the above ranges, the subwoofer may catch
fire, emit smoke or become damaged.
About the protection function
This product has protection function. When this
product detects something abnormal, the follow-
ing 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 situa-
tions 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.
En
Before you start
What’s what
Front side
21 3 4
Rear side
To adjust the switch, use a flathead screwdri-
ver if needed.
1 POWER/PROTECT indicator
The power indicator lights up to indicate
power ON.
! If something is not normal, the indicator
turns red.
2 GAIN (gain) control
If the output remains low, even when the
stereo volume is turned up, turn the con-
trols to a lower level. If distortion occurs
when the stereo volume is turned up, turn
these controls to a higher level.
! 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.
! For use with an RCA equipped stereo
with output of 4 V, set to the H position.
! If you hear too much noise when using
the speaker input terminals, turn the
gain control to higher level.
3 LPF (low-pass filter) cut off frequency
control
You can select a cut off frequency from
40 Hz to 240 Hz.
4 SUBSONIC FILTER Switch
When turned ON, frequencies of 30 Hz and
below are cut.
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 set-
ting.
En
Setting the unit
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
f
2
a
9
8
6
7
3
bc
5
h
g
d
e
4
1
1 Battery wire (sold separately)
! The maximum length of the wire be-
tween the fuse and the positive + term-
inal of the battery is 30 cm (12 in.).
! For the wire size, refer to Connecting the
power terminal. The battery wire, the
ground wire and the optional direct
ground wire must be same size. After
making all other connections at the am-
plifier, connect the battery wire terminal
of the amplifier to the positive + term-
inal of the battery.
2 Fuse (80 A) (sold separately)
Each amplifier must be separately fused at
80 A.
3 Positive + terminal
4 Negative (*) terminal
5 Battery (sold separately)
6 Ground wire, Terminal (sold separately)
The ground wires must be same size as the
battery wire.
7 Stereo with RCA output jacks (sold separately)
8 External output
En
Setting the unit Connecting the units
9 Connecting wire with RCA pin plugs (sold se-
parately)
a Amplifier with RCA input jacks (sold sepa-
rately)
b RCA input jack
c RCA output jack
d System remote control wire (sold separately)
e Speaker output terminals
Please see the following section for speaker
connection instructions. Refer to Connections
when using the speaker input wire.
f Fuse (40 A) × 2
g Front side
h Rear side
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 ca-
pacity 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.
! 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 re-
main 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 am-
plifier as far away as possible from the anten-
na, antenna cable and tuner.
Connecting the speakers
This amplifier can be connected to two speak-
ers in parallel. Connect the speaker leads to
suit the mode according to the figure shown
below.
Precautions for parallel connection
! When wiring two speakers in parallel, make
sure that the synthetic impedance is from
1 W to 8 W to prevent the amplifier from
catching fire, generating smoke and/or
being damaged.
! When connected in parallel with the syn-
thetic impedance less than 1 W, as a nor-
mal function, this amplifier may
automatically be set on mute if outputting
high volume sound. Turn down the volume
until the mute function is canceled.
When connecting to one speaker
Speaker output
En
Connecting the units
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 deter-
mine the cause, please contact your dealer.
Always disconnect the negative * terminal of
the battery beforehand to avoid the risk of elec-
tric 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
a
ppliances installed on the boat will not inter
-
fere with it.
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.
! 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 ap-
pliances installed on the boat will not interfere
with it.
! When under direct sunlight with the cover on
for long hours, the cockpit area may have ex-
tremely high temperatures. Allows the area to
cool down after cover has been removed be-
fore 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 re-
quirements, IEC 60065.
! The graphical symbol
placed on the
product means direct current.
! Connect either of three subwoofers to the am-
plifier; 1: a subwoofer with a 300 W or larger
nominal input and an impedance 4 W, 2: a
subwoofer with a 500 W or larger nominal
input and an impedance 2 W, or 3: a subwoofer
with a 800 W or larger nominal input and an
impedance 1 W.
If the nominal input and impedance are out of
the above ranges, the subwoofer may catch
fire, emit smoke or become damaged.
About the protection function
This product has protection function. When this
product detects something abnormal, the follow-
ing 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 situa-
tions 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.
En
Before you start
What’s what
Front side
21 3 4
Rear side
To adjust the switch, use a flathead screwdri-
ver if needed.
1 POWER/PROTECT indicator
The power indicator lights up to indicate
power ON.
! If something is not normal, the indicator
turns red.
2 GAIN (gain) control
If the output remains low, even when the
stereo volume is turned up, turn the con-
trols to a lower level. If distortion occurs
when the stereo volume is turned up, turn
these controls to a higher level.
! 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.
! For use with an RCA equipped stereo
with output of 4 V, set to the H position.
! If you hear too much noise when using
the speaker input terminals, turn the
gain control to higher level.
3 LPF (low-pass filter) cut off frequency
control
You can select a cut off frequency from
40 Hz to 240 Hz.
4 SUBSONIC FILTER Switch
When turned ON, frequencies of 30 Hz and
below are cut.
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 set-
ting.
En
Setting the unit
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
f
2
a
9
8
6
7
3
bc
5
h
g
d
e
4
1
1 Battery wire (sold separately)
! The maximum length of the wire be-
tween the fuse and the positive + term-
inal of the battery is 30 cm (12 in.).
! For the wire size, refer to Connecting the
power terminal. The battery wire, the
ground wire and the optional direct
ground wire must be same size. After
making all other connections at the am-
plifier, connect the battery wire terminal
of the amplifier to the positive + term-
inal of the battery.
2 Fuse (80 A) (sold separately)
Each amplifier must be separately fused at
80 A.
3 Positive + terminal
4 Negative (*) terminal
5 Battery (sold separately)
6 Ground wire, Terminal (sold separately)
The ground wires must be same size as the
battery wire.
7 Stereo with RCA output jacks (sold separately)
8 External output
En
Setting the unit Connecting the units
9 Connecting wire with RCA pin plugs (sold se-
parately)
a Amplifier with RCA input jacks (sold sepa-
rately)
b RCA input jack
c RCA output jack
d System remote control wire (sold separately)
e Speaker output terminals
Please see the following section for speaker
connection instructions. Refer to Connections
when using the speaker input wire.
f Fuse (40 A) × 2
g Front side
h Rear side
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 ca-
pacity 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.
! 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 re-
main 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 am-
plifier as far away as possible from the anten-
na, antenna cable and tuner.
Connecting the speakers
This amplifier can be connected to two speak-
ers in parallel. Connect the speaker leads to
suit the mode according to the figure shown
below.
Precautions for parallel connection
! When wiring two speakers in parallel, make
sure that the synthetic impedance is from
1 W to 8 W to prevent the amplifier from
catching fire, generating smoke and/or
being damaged.
! When connected in parallel with the syn-
thetic impedance less than 1 W, as a nor-
mal function, this amplifier may
automatically be set on mute if outputting
high volume sound. Turn down the volume
until the mute function is canceled.
When connecting to one speaker
Speaker output
! 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 ap-
pliances installed on the boat will not interfere
with it.
! When under direct sunlight with the cover on
for long hours, the cockpit area may have ex-
tremely high temperatures. Allows the area to
cool down after cover has been removed be-
fore 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 re-
quirements, IEC 60065.
! The graphical symbol
placed on the
product means direct current.
!
Connect either of three subwoofers to the am-
plifier; 1: a subwoofer with a 300 W or larger
nominal input and an impedance 4 W, 2: a
subwoofer with a 500 W or larger nominal
input and an impedance 2 W, or 3: a subwoofer
with a 800 W or larger nominal input and an
impedance 1 W.
If the nominal input and impedance are out of
the above ranges, the subwoofer may catch
fire, emit smoke or become damaged.
About the protection function
This product has protection function. When this
product detects something abnormal, the follow-
ing 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 situa-
tions 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.
<5707000013380V>5
En
Before you start
What’s what
Front side
21 3 4
Rear side
To adjust the switch, use a flathead screwdri-
ver if needed.
1 POWER/PROTECT indicator
The power indicator lights up to indicate
power ON.
! If something is not normal, the indicator
turns red.
2 GAIN (gain) control
If the output remains low, even when the
stereo volume is turned up, turn the con-
trols to a lower level. If distortion occurs
when the stereo volume is turned up, turn
these controls to a higher level.
! 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.
! For use with an RCA equipped stereo
with output of 4 V, set to the H position.
! If you hear too much noise when using
the speaker input terminals, turn the
gain control to higher level.
3 LPF (low-pass filter) cut off frequency
control
You can select a cut off frequency from
40 Hz to 240 Hz.
4 SUBSONIC FILTER Switch
When turned ON, frequencies of 30 Hz and
below are cut.
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 set-
ting.
En
Setting the unit
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
f
2
a
9
8
6
7
3
bc
5
h
g
d
e
4
1
1 Battery wire (sold separately)
! The maximum length of the wire be-
tween the fuse and the positive + term-
inal of the battery is 30 cm (12 in.).
! For the wire size, refer to Connecting the
power terminal. The battery wire, the
ground wire and the optional direct
ground wire must be same size. After
making all other connections at the am-
plifier, connect the battery wire terminal
of the amplifier to the positive + term-
inal of the battery.
2 Fuse (80 A) (sold separately)
Each amplifier must be separately fused at
80 A.
3 Positive + terminal
4 Negative (*) terminal
5 Battery (sold separately)
6 Ground wire, Terminal (sold separately)
The ground wires must be same size as the
battery wire.
7 Stereo with RCA output jacks (sold separately)
8 External output
En
Setting the unit Connecting the units
9 Connecting wire with RCA pin plugs (sold se-
parately)
a Amplifier with RCA input jacks (sold sepa-
rately)
b RCA input jack
c RCA output jack
d System remote control wire (sold separately)
e Speaker output terminals
Please see the following section for speaker
connection instructions. Refer to Connections
when using the speaker input wire.
f Fuse (40 A) × 2
g Front side
h Rear side
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 ca-
pacity 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.
! 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 re-
main 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 am-
plifier as far away as possible from the anten-
na, antenna cable and tuner.
Connecting the speakers
This amplifier can be connected to two speak-
ers in parallel. Connect the speaker leads to
suit the mode according to the figure shown
below.
Precautions for parallel connection
! When wiring two speakers in parallel, make
sure that the synthetic impedance is from
1 W to 8 W to prevent the amplifier from
catching fire, generating smoke and/or
being damaged.
! When connected in parallel with the syn-
thetic impedance less than 1 W, as a nor-
mal function, this amplifier may
automatically be set on mute if outputting
high volume sound. Turn down the volume
until the mute function is canceled.
When connecting to one speaker
Speaker output
! 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 ap-
pliances installed on the boat will not interfere
with it.
! When under direct sunlight with the cover on
for long hours, the cockpit area may have ex-
tremely high temperatures. Allows the area to
cool down after cover has been removed be-
fore 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 re-
quirements, IEC 60065.
! The graphical symbol
placed on the
product means direct current.
! Connect either of three subwoofers to the am-
plifier; 1: a subwoofer with a 300 W or larger
nominal input and an impedance 4 W, 2: a
subwoofer with a 500 W or larger nominal
input and an impedance 2 W, or 3: a subwoofer
with a 800 W or larger nominal input and an
impedance 1 W.
If the nominal input and impedance are out of
the above ranges, the subwoofer may catch
fire, emit smoke or become damaged.
About the protection function
This product has protection function. When this
product detects something abnormal, the follow-
ing 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 situa-
tions 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.
<5707000013380V>5
En
Before you start
What’s what
Front side
21 3 4
Rear side
To adjust the switch, use a flathead screwdri-
ver if needed.
1 POWER/PROTECT indicator
The power indicator lights up to indicate
power ON.
! If something is not normal, the indicator
turns red.
2 GAIN (gain) control
If the output remains low, even when the
stereo volume is turned up, turn the con-
trols to a lower level. If distortion occurs
when the stereo volume is turned up, turn
these controls to a higher level.
! 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.
! For use with an RCA equipped stereo
with output of 4 V, set to the H position.
! If you hear too much noise when using
the speaker input terminals, turn the
gain control to higher level.
3 LPF (low-pass filter) cut off frequency
control
You can select a cut off frequency from
40 Hz to 240 Hz.
4 SUBSONIC FILTER Switch
When turned ON, frequencies of 30 Hz and
below are cut.
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 set-
ting.
En
Setting the unit
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
f
2
a
9
8
6
7
3
bc
5
h
g
d
e
4
1
1 Battery wire (sold separately)
! The maximum length of the wire be-
tween the fuse and the positive + term-
inal of the battery is 30 cm (12 in.).
! For the wire size, refer to Connecting the
power terminal. The battery wire, the
ground wire and the optional direct
ground wire must be same size. After
making all other connections at the am-
plifier, connect the battery wire terminal
of the amplifier to the positive + term-
inal of the battery.
2 Fuse (80 A) (sold separately)
Each amplifier must be separately fused at
80 A.
3 Positive + terminal
4 Negative (*) terminal
5 Battery (sold separately)
6 Ground wire, Terminal (sold separately)
The ground wires must be same size as the
battery wire.
7 Stereo with RCA output jacks (sold separately)
8 External output
En
Setting the unit Connecting the units
9 Connecting wire with RCA pin plugs (sold se-
parately)
a Amplifier with RCA input jacks (sold sepa-
rately)
b RCA input jack
c RCA output jack
d System remote control wire (sold separately)
e Speaker output terminals
Please see the following section for speaker
connection instructions. Refer to Connections
when using the speaker input wire.
f Fuse (40 A) × 2
g Front side
h Rear side
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 ca-
pacity 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.
! 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 re-
main 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 am-
plifier as far away as possible from the anten-
na, antenna cable and tuner.
Connecting the speakers
This amplifier can be connected to two speak-
ers in parallel. Connect the speaker leads to
suit the mode according to the figure shown
below.
Precautions for parallel connection
! When wiring two speakers in parallel, make
sure that the synthetic impedance is from
1 W to 8 W to prevent the amplifier from
catching fire, generating smoke and/or
being damaged.
! When connected in parallel with the syn-
thetic impedance less than 1 W, as a nor-
mal function, this amplifier may
automatically be set on mute if outputting
high volume sound. Turn down the volume
until the mute function is canceled.
When connecting to one speaker
Speaker output