CONTENTS
U S E R ’ S M A N U A L
2 Introduction
2 Features
3 What is included?
3 General precautions
3 Installation precautions
3 Mounting the amplifier
4 Connecting the amplifier
5 Important system considerations
5 Tips for a safe system
6 Low level input wiring
6 Speaker wiring
7 Power connections
Normal and with Stiffening Capacitor
8 Bridging two RX
CLASS D Amplifiers
10 Troubleshooting
11 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
RXD650
RXD1000
RXD1400
RXD2400
CLASS D MonoBlock
Car Audio Amplifier
®
RX Class D Amplifier User’s Manual - page 1
RX Class D Amplifier User’s Manual - page 2
Introduction
With the Planet Audio RXD series, we
are introducing four new CLASS D
amplifiers, all designed in the USA.
All four RXD models feature variable
low pass and subsonic filters and a
variable input gain control. They also
incorporate a phase selector switch
to help compensate for time delays in
subwoofer applications.
For further flexibility in the use of a
subwoofer, a variable 0-+18dB Bass
Boost control has been included.You
can control the subwoofer level with
the included MOBB-17 remote level
control module.
Planet Audio understands that
amplifiers are placed in many different
kinds of installations, so we have also
included an input sensitivity control to
help you integrate the amp into your
system regardless of the nature of your
input source.
A special feature on this Class D amp
is DataLink circuitry, which allows you
to “strap” together two identical RXD
models for an astounding total
maximum output power.
Features
Your new RX amplifier features the
following:
• Class D operation
• MOSFET PWM (Pulse Width
Modulated) Power Supply
• One Ohm stable mono operation
• Thermal, overload and speaker
short protection
• Soft turn-on circuit
• Remote turn-on/turn-off circuit
• Variable input gain control
• Input voltage sensitivity selector
• Variable subsonic filter: 15-40 Hz,
24/dB/octave
• Variable low pass filter: 50-150 Hz,
24/dB/octave
• Variable 0-+18dB Bass Boost
• 0/180º Phase Shift selector
• Nickel-plated RCA low level inputs
• Nickel-plated speaker and power
terminals
• LED power and protection
indicators
• Heavy duty aluminum heatsink
• Remote subwoofer level control
RX Class D Amplifier User’s Manual - page 3
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.
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.
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.
General precautions
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 cord
and send the amplifier to your local
dealer or service center as soon as
possible .
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.
• Class D amplifier
• Remote subwoofer level control
• Remote subwoofer control cable
• DataLink cable (for strapping two
identical RX Class D amps
together)
• Four (4) mounting screws
RX Class D Amplifier User’s Manual - page 4
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.
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 amplifier’s 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 4 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
4 gauge (or heavier) cable from this
fuse to the amplifier location.
The purpose of placing a fuse in this
location is to protect your vehicle’s
battery in the event that this wire
accidentally touches the chassis
ground on its run to the amplifier.
Connecting the amplifier
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.
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.
RX Class D Amplifier User’s Manual - page 5
Important installation
considerations for using
this amplifier.
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.
The fuse ratings for three of the amps
is shown on the Specifications page
at the back of this manual (The
RXD2400 requires an outboard fuse
of your choosing). Although sufficient
for normal working conditions,
overloading the amp may result in
blown fuses. Please try to avoid
overloading the amp in this manner.
Your RX Class D amplifier is
designed to run with a minimum load of 1 Ohm.
Operating the amplifier with a
speaker impedance load below 1 Ohm may result in poor
sound quality and damage to
the amplifier circuitry. Such
damage is not covered under
the warranty for this product.
When making electrical connections
to the amplifier, please observe the
following:
• Always use 4GA or heavier wire for
power and ground connections.
• Wire the amplifier directly to the car
battery. Make sure there is circuit
protection (such as a fuse) on the
positive power lead within 18” of the
battery.
• When making a ground connection,
always use the shortest possible wire
to a good chassis ground point.
• Wire the remote turn-on connection
to the remote turn-on lead of your EQ
or head unit. In some cases, this may
be the power antenna lead of the head
unit.
• Fuses protect BOTH the amplifier
and the electrical system of your
vehicle from faulty conditions. If you
must replace a fuse on the amplifier,
you must use a fuse of exactly the
same type and rating. A different type
of fuse or rating may result in damage
or cause a fire.
Tips for making your system
as safe as possible
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!
LINE OUT
L
R
INPUTS
INPUT SENSITIVITY
2-8V
100mV-
2V
BRIDGED MODE
INPUT
LEVEL
MIN
MAX
SUBSONIC
FILTER
15
40
LOW PASS
FILTER
50
150
PHASE
SHIFT
0
180º
BASS
BOOST
0
+18dB
SPEAKER
MASTER SLAVE
DATALINK
POWER
PROTECTION
CLASS D MonoBlock Power Amplifier
HzHz
LINE OUT
L
R
INPUTS
INPUT SENSITIVITY
2-8V
100mV-
2V
BRIDGED MODE
INPUT
LEVEL
MIN
MAX
SUBSONIC
FILTER
15
40
LOW PASS
FILTER
50
150
PHASE
SHIFT
0
180º
BASS
BOOST
0
+18dB
SPEAKER
MASTER SLAVE
DATALINK
POWER
PROTECTION
CLASS D MonoBlock Power Amplifier
HzHz
LINE OUT
L
R
INPUTS
INPUT SENSITIVITY
2-8V
100mV-
2V
BRIDGED MODE
INPUT
LEVEL
MIN
MAX
SUBSONIC
FILTER
15
40
LOW PASS
FILTER
50
150
PHASE
SHIFT
0
180º
BASS
BOOST
0
+18dB
SPEAKER
MASTER SLAVE
DATALINK
POWER
PROTECTION
CLASS D MonoBlock Power Amplifier
HzHz
RX Class D Amplifier User’s Manual - page 6
Low Level Input Wiring
Low-level (RCA) input wiring is preferred for best audio performance. Always use
a high-quality RCA cable for best audio performance.
Speaker Connections
SPEAKER
IMPEDANCE
1-8 OHMS
To Audio Outputs of head
unit or Subwoofer outputs
of a signal processor
To Audio Inputs of
satellite amplifier
(if present)
SUBWOOFER
Speaker
REMOTE
LEVEL
CONTROL
FUSES POWER
CONNECTIONS
+12V
REMOTE
GROUND
REMOTE
LEVEL
CONTROL
FUSES POWER
CONNECTIONS
+12V
REMOTE
GROUND
RX Class D Amplifier User’s Manual - page 7
Power Connections
Without Stiffening Capacitor
With Stiffening
Capacitor
to REMOTE TURN-ON
terminal of head unit
Chassis ground point
BatteryFUSE
to REMOTE TURN-ON
terminal of head unit
Battery
FUSE
Distribution
Block
Chassis
ground
point
Stiffening
Capacitor
Remote
Subwoofer Level Control
Remote
Subwoofer Level Control
Chassis
ground
point
REMOTE
LEVEL
CONTROL
FUSES POWER
CONNECTIONS
+12V
REMOTE
GROUND
REMOTE
LEVEL
CONTROL
FUSES POWER
CONNECTIONS
+12V
REMOTE
GROUND
RX Class D Amplifier User’s Manual - page 9
Bridging Two Identical RXD Amplifiers
SLAVE
AMPLIFIER
POWER CONNECTIONS
(SEE PREVIOUS PAGE FOR INPUT, SPEAKER AND DATALINK CONNECTIONS)
MASTER
AMPLIFIER
to REMOTE TURN-ON
terminal of head unit
Chassis
ground
point
Battery
FUSE
Distribution
Block
Chassis
ground
point
Stiffening
Capacitor
Chassis
ground
point
Remote Subwoofer
Level Control
PLEASE NOTE:
In this MASTER AMP/SLAVE AMP
configuration, the Slave amp receives
its audio signal from the Master Amp.
Therefore, DO NOT USE THE REMOTE
SUBWOOFER LEVEL CONTROL ON
THE SLAVE AMP!
Specifications
RX Class D Amplifier User’s Manual - page 11
All specifications subject to
change without notice.
MAX POWER
into 1 Ohm
RMS POWER
into 1 Ohm
RMS POWER
into 2 Ohms
RMS POWER
into 4 Ohms
Min. speaker
impedance
Input
impedance
Input
sensitivity
Freq.response
Signal-to-noise ratio
Crossover/filter
low pass
subsonic
Bass Boost
Phase Shift
Fuse rating
Dimensions:
(11" x 2
-5/8
" x ...)
3000W x 1
2400W x 1
1600W x 1
1000W x 1
1 Ohm Mono
10k Ohm
Selectable
100mV-2V or 2V-8V
20Hz-50Hz
100dB
50Hz-150Hz
15Hz-40Hz
Variable 0 -+18dB
Selectable 0/180º
n/a
20-7/8"
RXD2400MODEL
CLASS D M ono Bl oc k Ca r Aud io Am plifi ers
1900W x 1
1400W x 1
1000W x 1
650W x 1
1
10k Ohm
50
100dB
50
15
V
Se
40A x 4
18-1/8"
RXD1400
1350W x 1
1000W x 1
750W x 1
400W x 1
1
10k Ohm
50
100dB
50
15
V
Se
40A x 3
15-3/4"
RXD1000
950W x 1
650W x 1
450W x 1
250W x 1
1
10k Ohm
50
100dB
50
15
V
Se
40A x 2
12-1/8"
RXD650
®
Notes
®
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