Planet Audio RX2.400, RX2.300, RX2.200, RX2.150, RX2.100 Users Manual
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CONTENTS
RX MOSFET Amplifier User’s Manual - page 1
U S E R ’ S M A N U A L
2 Introduction
2 What is included?
3 Features
3 About 2 Ohm operation
4 General precautions
4 Installation precautions
4 Mounting the amplifier
5 Connecting the amplifier
6 Low level input wiring
8 High level input wiring
10 2CH Power and Speaker wiring
2CH Mode
11 2CH Power and Speaker wiring
Bridged Mode
12 2CH Power and Speaker wiring
TriMode
13 4CH Power and Speaker wiring
4CH Mode
14 4CH Power and Speaker wiring
Bridged Mode
15 4CH Power and Speaker wiring
TriMode
16 5CH Power and Speaker wiring
5CH Mode
17 5CH Power and Speaker wiring
Bridged Mode
18 5CH Power and Speaker wiring
TriMode
19 Troubleshooting
20 Specifications
Congratulations on your
purchase of a
Planet Audio RX Amplifier.
It has been designed, engineered
and manufactured to bring you
the highest level of performance
and quality, and will afford you
years of listening pleasure.
Thank you for making Planet
Audio your choice for car audio
entertainment!
page
RX2.400
RX2.300
RX2.200
RX2.150
RX2.100
Two Channel
MOSFET Car Audio
Amplifiers
RX4.400
RX4.300
RX4.200
Four Channel
MOSFET Car Audio
Amplifiers
RX5.600
Five Channel
MOSFET Car Audio
Amplifier
®
RX MOSFET Amplifier User’s Manual - page 2
Introduction
With the Planet Audio RX MOSFET
amplifier series, we are introducing
seven new amplifiers, all designed in
the USA. This new series includes five
2-channel amplifiers, three 4-channel
amplifiers and a versatile 5-channel
amplifier.
All RX models feature variable low pass
and high pass crossovers. Also
featured are variable input gain controls
with a input voltage sensitivity
selectors.
For further flexibility in the use of a
subwoofer, 0-+18dB Bass Boost
control has been included on all
amplifiers. Accurate control of timealignment of the sound over the
audibile spectrum is possible using
the variable phase shift control.You
can control the subwoofer level with
the optional MOBB-12 remote level
control module.
Planet Audio understands that
amplifiers are placed in many different
kinds of installations, so we
incorporated a very flexible system of
controls in these amplifiers in order to
help you integrate the amp into your
system regardless of the nature of your
input source.
What is included?
When first unpacking your new
amplifier, please check first that the
package contains all of the items
below. If something is missing, contact
the store where you purchased the
amplifier.
• RX amplifier
•High input cable with connector
• Four (4) mounting screws
RX MOSFET Amplifier User’s Manual - page 3
Features About 2 Ohm operation
Your new RX amplifier features the
following:
• Class A-B operation
• Bridgeable outputs
• Tri-Mode capable
• MOSFET PWM (Pulse Width
Modulated) Power Supply
• 2 Ohm stable stereo operation
with output power increase
• Thermal and speaker short
protection
• Soft turn-on circuit
• Remote turn-on/turn-off circuit
• Variable input gain control
• HIgh voltage input sensitivity
control
• Variable low pass crossover(s)
• Variable high pass crossover(s)
• Variable phase shift control
• Variable 0 to +18dB Bass Boost
• Chrome-plated RCA low level and
high level inputs
• LED power and protection
indicators
Your RX amplifier has been designed
to operate efficiently at loads down
to 2 Ohms. This means that you can
install four 8 Ohm speakers per
channel, when using parallel wiring.
Increasing the number of woofers per
channel at low frequencies (below
100Hz) produces an acoustic coupling
effect. This acoustic coupling effect
increases your power output by about
3dB per speaker, or the equivalent of
an additional 10W per speaker.
When operating at 2 Ohms, the
amplifiers will increase their output
power by approximately 50%. The
current draw will also increase by
about the same amount, so be sure
you have enough current to run the
amplifiers into a 2 Ohm load.
If you lack adequate current, your
music reproduction will be distorted.
RX MOSFET Amplifier User’s Manual - page 4
General precautions
SHOCK HAZARD! Do not open the case
of this product. There are dangerous
voltages present within the unit. There are
no user-serviceable parts within the unit.
Before making or breaking power
connections in your system,
disconnect the vehicle battery. Confirm
that your head unit or other equipment
is turned off while connecting the input
jacks and speaker terminals.
If you need to replace the power fuse,
replace it only with a fuse identical to
that supplied with the amplifier. Using
a fuse of a different type or rating may
result in damage to your audio system
or your amplifier which is not covered
by the manufacturer's warranty.
Before installing and using your
new Planet Audio amplifier, please
become familiar with all the information contained in this manual.
Please keep this manual in a safe
place for future reference.
• Do not open or attempt to repair
this unit yourself. Dangerous high
voltages are present which may result
in electric shock. Refer any repairs to
a qualified service technician.
• To avoid risk of electronic shock or
damage to the amplifier, do not permit
any of this equipment to become
damp or wet from water or drinks. If
this does occur, immediately unplug
the power wires and send the amplifier
to your local dealer or service center
as soon as possible.
• If there is smoke or any peculiar
odor present during use or if there is
damage to any of the component
enclosures, immediately unplug the
power wire and send the amplifier to
your local dealer or service center as
soon as possible .
Installation precautions
Before you drill or cut any holes,
investigate your car's layout very
carefully. Take special care when you
work near the gas tank, fuel lines,
hydraulic lines and electrical wiring.
Never operate the amplifier when it is
unmounted. Attach all audio system
components securely to prevent
damage, especially in an accident.
Mounting the amplifier
1. Find a suitable location in the vehicle
in which to mount the amplifier.
2. Make sure there is sufficient air
circulation around the intended
mounting location.
3. Mark the location for the mounting
hole screws by positioning the amplifier
where you wish to install it. Use a
scribe or mounting screw, inserted
through each of the amp's mounting
holes, to mark the mounting surface.
If the mounting surface is carpeted,
measure the hole centers and mark
with a felt tip pen.
4. Drill pilot holes in the mounting
surface for the mounting screws. Place
the amplifier in position, and attach
the amplifier to the mounting surface
securely using screws.
RX MOSFET Amplifier User’s Manual - page 5
Before doing any wiring, look through
this manual and identify the diagrams
to follow for power, input and speaker
connections for your particular
installation. Be sure you understand
all the connections before you proceed.
1. Connect the power ground terminal
to the closest point on the chassis of
the car. Keep this ground wire to less
than 39" (100 cm) in length. Use 8
gauge (or heavier) wire.
2. Connect the remote terminal to the
remote output of the head unit using
16 gauge (or heavier) wire.
3. Connect an empty fuse holder within
18" (45 cm) of the car battery, and run
8 gauge (or heavier) cable from this
fuse to the amplifier location.
4. Check that the fuse holder is empty.
Then connect the fuse holder to the
"BATT+" connection on the amplifier.
5. If multiple amplifiers are being used
in your system, either:
• Run a separate pair of cables from
the battery and a chassis ground point
to each amplifier. Each (+) cable must
have its own inline fuse.
-or-
• Run a #4 cable from the fuse holder
at the battery to a distribution block
at or near the amplifier's location. Then
run separate cables from the amplifier
to this distribution block and to
independent chassis ground points.
6. Connect all line inputs and outputs
(if used) using high-quality cables.
Connect all speakers, following the
diagrams in this manual. Be sure to
observe proper polarity to avoid audio
phase problems.
Connecting the amplifier
7. Insert fuse(s) into the battery fuse
holder(s).
8. Recheck all connections before
powering up the amplifier.
9. Set all level controls to minimum
position, and set all crossover
controls/switches to the desired
frequency points.
10. Power up the head unit and the
amplifier. Then set the volume control
on the head unit to about 3/4 volume,
and adjust the amplifier’s input level
control(s) to just below the level of
distortion.
11. Further fine tuning of the various
controls may be necessary to obtain best
results.
Do not mistake the input level control
for a volume control! It is designed
ONLY to match the output level of
your audio source to the input level
of your amplifier.
Do not adjust this input level to
maximum unless your input level
requires it.
Ignoring these instructions will result
in an input overload to the amplifier,
and excessive audio distortion. It
can also cause the protection circuit
to engage.
Don't misuse the
level control!
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