Owner's Manual
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En En En En
Install the amplifier in a dry and well-venti-
lated environment, where other equipment
will not interfere with it.
When drilling holes in the chassis for instal-
lation, take precautions so as not to contact,
d
amage or obstruct pipes, fuel lines, tanks or
electrical wiring. Failure to take such precau-
tions may result in fire.
To ensure proper heat dissipation of the
amplifier, ensure the following during
installation:
— Allow adequate space above the amplifier
for proper ventilation.
— Do not mount the amplifier in the engine
compartment or in any areas of extreme heat.
— Do not cover the amplifier.
Slots and openings in the cabinet are pro-
vided for ventilation to ensure reliable oper-
ation of the product, and to protect it from
overheating. To prevent fire hazard, the open-
ings should never be blocked or covered with
items (such as papers, floor mat, cloths).
Please ask your dealer or relevant profession-
als to install/uninstall this product. Incorrect
installation can interfere with boat operation.
Keep small items such as bolts and screws
out of the reach of children. Swallowing can
cause serious injury. If swallowed, consult a
doctor immediately.
CAUTION
Always keep the volume low enough to hear
outside sounds.
Extended use of the headunit while the
engine is at rest or idling may exhaust the
battery.
The graphical symbol
placed on the
product means this is an electronic product
requiring direct current electrical power.
About the protection function
This product has a protection function. If this
product detects something abnormal, the Power/
Protect indicator will turn red and the operation
of amplifier will be stopped:
— When the temperature inside the product
becomes high
— When speaker output detects abnormality
— When the supply voltage is out of
specification
Important (Serial number)
The serial number is located on the bottom of
this unit. Be sure to record this number on the
enclosed warranty card before installation.
Setting the unit
What’s what
Top side
134
5678
2
Top panel cover
Use the supplied wrench to remove the four
screws and detach the Top panel cover. Be
sure not to lose the removed screws.
To adjust the switch, use a flathead screw
-
driver if needed.
Terminal side
1 INPUT SELECT switch
Select 2CH for two-channel input, 4CH for
four–channel input, or 6CH for six-channel
input.
2 Power/Protect indicator
The power indicator lights up blue to indi
-
cate power ON.
If something is not normal, the indicator
turns red.
3 GAIN volume
*
Adjusting gain volume CH A (channel
A), CH B (channel B), and CH C (channel
C) helps align the headunit output to the
Pioneer amplifier. Default setting is the
NOR (normal) position.
If the output remains low even when the
headunit volume is turned up, turn the
volume to a lower level (clockwise). If dis
-
tortion occurs when the headunit volume is
t
urned up, turn these volumes to a higher
level (counterclockwise).
If using only one input plug, set the gain
volumes for speaker outputs A, B, and C
to the same position.
For use with an RCA equipped stereo
(standard output of 500 mV), set to the
NOR (normal) position. For use with an
RCA equipped Pioneer stereo with max
-
imum output of 4 V or more, adjust level
t
o match that of the stereo output.
For use with an RCA equipped stereo
with output of 4 V, set to the H (High)
position.
4 LPF (low-pass lter)/HPF (high-pass
lter) select switch
*
Switch the settings based on the con-
nected speaker.
When the Subwoofer is connected:
Select LPF. This eliminates high range
frequency and outputs low range
frequency.
When the full range speaker is
connected:
Select HPF or OFF. HPF eliminates low
range frequency and output high range
frequency. OFF outputs the entire fre
-
quency range.
5
INPUT SENS switch
Select RCA for RCA level input signals or SP
for Speaker level input signals.
6 SPEAKER SETTING (output power
switch)
Switch the output power according to the
connected speaker.
7 SPEAKER SETTING (output channel
switch)
Switch the number of channels accord
-
ing to the connected speaker. When the
S
ubwoofer is connected, select MONO,
when the full range speaker is connected,
select 2CH.
8 FREQ (Hz) (cut off frequency) volume
*
Cut off frequency selectable from 50 Hz to
500 Hz if the LPF/HPF select switch is set to
LPF or HPF. For precise frequency informa-
tion , refer to
Precise Frequency Selection
Chart
.
* These controls are provided for Channels A,
B, and C, respectively.
Setting gain properly
Protective function included to avoid
malfunction of the unit and/or speakers
due to excessive output, improper use or
improper connection.
When outputting high volume sound etc.,
this function may cut off the output for a
few seconds as a normal function, Output
will be restored when the volume of the
headunit is turned down.
A cut in sound output may indicate
improper setting of the gain volume. To
ensure continuous sound output with the
headunit at a high volume, set the ampli
-
fier gain volume to a level appropriate
f
or the preout maximum output level of
the headunit, so that volume can remain
unchanged and to avoid distortion caused
by signal waveform clipping at the amplifier
input.
Even with correct volume and gain set-
tings, the unit sound may cut out period-
ically. In such cases, please contact an
a
uthorized Pioneer Service Company.
Gain volume of this unit
0.5 V (Maximum preout level=2 V)
Maximum preout level=4V
Above illustration shows NOR (normal) gain
setting.
Relationship between amplier gain
and headunit 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 amplier gain
volume
If the signal waveform is distorted due to high
output, even if the amplifier gain is raised, the
output power will change only slightly.
Precise Frequency Selection
Chart
The numbers in the illustration correspond to
the Step Number.
No.1
No.9
No.13
No.17
No.21
No.5
Step Number Frequency (Hz)
1 50
2 56
3 63
4 71.5
5 80
6 90
7 100
8 113
9 125
10 143
11 160
12 180
13 200
14 225
15 250
16 285
17 315
18 335
19 400
20 450
21 500
Connecting the units
Connection diagram
1
f
a
7
3
4
5
6
2
b
c
d
e
8
9
9
1 Battery wire (sold separately)
The maximum length of the wire
between 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 battery 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 ter
-
minal of the amplifier to the positive
terminal 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 Headunit with RCA output jacks (sold
separately)
8 External output
9 Connecting wire with RCA pin plugs (sold
separately)
a Fuse (40 A) × 2
b RCA input jack A
c RCA input jack B
d RCA input jack C
e Speaker output terminals
Please see the following section for
speaker connection instructions. Refer to
Connections when using the speaker input
wire
.
f System remote control wire (sold
separately)
Note
INPUT SELECT switch must be set. For details,
see
Setting the unit
.
Before connecting the
amplier
WARNING
Secure the wiring with cable clamps or adhe-
sive tape. To protect the wiring, wrap sections
i
n 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
If the system remote control wire of the
amplifier is connected to the power terminal
via the ignition switch (12 V DC), the amplifier
will remain on with the ignition whether the
headunit is on or off, which may exhaust
battery if the engine is at rest or idling.
Install and route the separately sold marine
grade battery wire, marine grade ground wire,
speaker wires and the amplifier as far away
as possible from the radio antenna, antenna
cable, tuner and any communications equip
-
ment and wiring.
About suitable specication
of speaker
Regarding the speaker to be connected to the
amplifier, use a speaker having a rated input
capacity more than the rated output capacity
of the amplifier. If this condition is not met,
there is a risk of fire, smoke, or damage. The
speaker impedance is 2Ω to 8Ω.