Boss Audio Systems Car Amplifier Cx1000 Users Manual CHAOS MOSFET AMP

CX550 to the manual e233f5f2-c3cc-4196-856d-c21a9f90a497

2015-02-03

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USER’S MANUAL
page

CX250
CX450
CX550
CX750
CX950
CX1250

Two Channel
MOSFET Car Audio
Amplifiers

CX600
CX650
CX800
CX1000

Four Channel
MOSFET Car Audio
Amplifiers

CX1800

Five Channel
MOSFET Car Audio
Amplifier

CX1100M
CX2000M

MonoBlock
MOSFET Car Audio
Amplifier

Congratulations on your
purchase of a
CHAOS EXXTREME Amplifier.

CONTENTS

Introduction

What is included?

Features

About 2 Ohm operation

General precautions

Installation precautions

Mounting the amplifier

Connecting the amplifier

Low level input wiring

High level input wiring

12 2CH Power and Speaker wiring
2CH and Bridged Modes

13 2CH Power and Speaker wiring
TriMode

14 4CH Power and Speaker wiring
4CH and Bridged Modes

15 4CH Power and Speaker wiring
TriMode

16 5CH Power and Speaker wiring

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.

5CH Mode

17 5CH Power and Speaker wiring
Bridged Mode

18 5CH Power and Speaker wiring
TriMode

19 MonoBlock Power and Speaker wiring

Thank you for making
your choice for car audio
entertainment!

20 Troubleshooting
21 Specifications

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 1

Introduction

What is included?

With the
CHAOS EXXTREME
MOSFET amplifier series, we are
introducing eleven new amplifiers, all
designed in the USA. This new series
includes a two monoblock amps, six
2-channel, four 4-channel amplifiers
and a 5-channel amp.

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.
• CHAOS EXXTREME amplifier

All CHAOS EXXTREME models feature
variable low pass and high pass
crossovers and variable input gain
controls. They also incorporate an input
voltage sensistivity selector for added
system flexibility.
For further flexibility in the use of a
subwoofer, 0-+18dB Bass Boost
control has been included on all
amplifiers. You can control the
subwoofer level with the remote level
control module.
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.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 2

• Remote subwoofer level control
•High input cable with connector
• Four (4) mounting screws

Features

About 2 Ohm operation

Your new CHAOS EXXTREME amplifier
features the following:

Your CHAOS EXXTREME 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.

• Class A-B operation
• Bridgeable outputs
(except CX1100M and CX2000M)
• Tri-Mode capable
(except CX1100M and CX2000M)
• 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

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.

• Remote turn-on/turn-off circuit
• Variable input gain control

If you lack adequate current, your
music reproduction will be distorted.

• Variable low pass crossover(s)
• Fixed high pass crossover(s)
• Variable 0 to +18dB Bass Boost
• Nickel-plated RCA low level and
high level inputs
• LED power and protection
indicators
• Silver anodized heatsink
• Remote subwoofer level control

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 3

General precautions
Before installing and using your
new
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.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 4

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.
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.

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.

Connecting the amplifier
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.

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.

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.

Don't misuse the
level control!
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.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 5

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.
NOTE: Do not connect BOTH the high level and low level inputs from your
receiver to your amplifier at the same time!

Remote Subwoofer
Level Control

2-Channel Amplifiers
CX250, CX450, CX550,
CX750, CX950, and CX1250

LEFT

RIGHT

INPUT
LEVEL

POWER

REMOTE SUBWOOFER
LEVEL CONTROL

BASS
BOOST

PROTECTION

130
100

R+

HIGH LEVEL

LOW LEVEL

MAX

+12dB

HIGH PASS

145

40
MIN

FULL RANGE

155

LOW PASS
35

160

MODE

LOW PASS FREQ, Hz

INPUTS

CROSSOVER

T WO C HA NNE L MOS FE T P OW ER A MP LIF IE R

To Audio
Outputs of head
unit or signal
processor

4-Channel Amplifiers
CX600, CX650, CX800, and CX1000
Remote Subwoofer
Level Control

POWER

CROSSOVER
MODE
FULL
RANGE

LOW PASS INPUT
FREQ
LEVEL

100

145

155

160 MIN

CH3/4 CONTROLS

MAX

INPUT
LEVEL

MIN

BASS LOW PASS
BOOST
FREQ

MAX

+12dB

100

145

155

CROSSOVER
MODE

REMOTE
SUBWOOFER
LEVEL CONTROL

CH1/2 CONTROLS

3 LOW

LEVEL
FOUR CHANNEL
MOS FE T P OW ER A MP LI FIE R

2 + HIGH
LEVEL + 3
CH

PROTECTION

HIGH PASS
FULL RANGE

160

INPUTS

To FRONT Audio Outputs of
head unit or
signal processor

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 6

To REAR Audio Outputs of
head unit or
signal processor

5-Channel Amplifier

Remote Subwoofer
Level Control

CX1800

CH1/2 CONTROLS
CH

+
CH

HIGH + 3
LEVEL
INPUTS

INPUT CONTROLS

SENSITIVITY

LEVEL

CROSSOVER

MODE
FULL

HIGH
PASS

FREQ

BASS BOOST

+18dB

INPUT CONTROLS

SENSITIVITY

LEVEL

FULL

CROSSOVER

LOW PASS

FREQ

100mV-2V 2-8V MIN

MAX

LOW PASS

90
Hz

HIGH PASS

4+
2

LOW LEVEL INPUTS

100mV-2V 2-8V

SENSITIVITY

MIN

MAX

LEVEL

INPUT CONTROLS

FULL 45
LOW PASS

MODE

100mV-2V 2-8V MIN
4CH
5CH

FREQ

CROSSOVER

+18dB

BASS BOOST

CH5

INPUTS

INPUT MODE

MAX

POWER
PROTECT

+18dB

BASS BOOST

CH5 CONTROLS

REMOTE SUBWOOFER
LEVEL CONTROL

CH3/4 CONTROLS

To SUBWOOFER
Audio Outputs of
head unit or signal
processor (if
present)
To FRONT Audio
Outputs of head
unit or signal
processor

To REAR Audio
Outputs of head
unit or signal
processor

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 7

MonoBlock Amplifier
CX1100M

Remote Subwoofer
Level Control

LOW PASS
FREQUENCY

POWER

100

145

155

0 +18dB

REMOTE SUBWOOFER BASS BOOST
LEVEL CONTROL

160

MODE

LEVEL

FULL RANGE

CROSSOVER

MIN

SENSITIVITY

MAX

LEFT

2-8V 100mV-2V

RIGHT
PROTECTION
+

LOW

LEVEL

INPUT CONTROLS

R+

HIGH LEVEL

INPUTS

MOS FE T MO NOBLOC K P OW ER A MP LI FIE R

To Audio Outputs of head
unit or
signal processor

MonoBlock Amplifier
CX2000M
Remote Subwoofer
Level Control

LEFT

RIGHT

POWER
+

INPUT
LEVEL

BASS
BOOST

CROSSOVER
FREQUENCY

R+

HIGH LEVEL

LOW

LEVEL

PROTECTION

REMOTE SUBWOOFER
LEVEL CONTROL
MIN

MAX

+12dB

40Hz

120Hz

INPUTS

MOS FE T MO NOBLOC K P OW ER A MP LI FIE R

To Audio Outputs of head
unit or
signal processor

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 8

High Level Input Wiring
The high level input(s) should only be used when your head unit lacks RCA outputs.
If the RCA outputs are not present, connect the speaker outputs from the receiver
to the high level input connector of the amplifier. Be sure to observe polarity to
avoid audio phase problems.
NOTE: Do not connect BOTH the high level and low level inputs from your
receiver to your amplifier at the same time!

2-Channel Amplifiers
CX250, CX450, CX550, CX750, CX950, and CX1250

LEFT

REMOTE SUBWOOFER
LEVEL CONTROL

RIGHT

INPUT
LEVEL

POWER
+

BASS
BOOST

MIN

LOW LEVEL

MAX

PROTECTION

130

R+

HIGH LEVEL

Remote
Subwoofer Level Control

+12dB

100

145

155

HIGH PASS
FULL RANGE
LOW PASS

160

MODE

LOW PASS FREQ, Hz

INPUTS

CROSSOVER

T WO C HA NNE L MOS FE T P OW ER A MP LIF IE R

L+

L- R- R+

To Speaker Terminals
of head unit

Remote
Subwoofer Level Control

4-Channel Amplifiers
CX600, CX650, CX800, and CX1000

POWER

CROSSOVER LOW PASS INPUT
MODE
FREQ
LEVEL
FULL
RANGE

100

145

155

160 MIN

CH3/4 CONTROLS

INPUT
LEVEL

MAX

MIN

BASS LOW PASS
BOOST
FREQ

MAX

100

145

155

+12dB

LOW
3 LEVEL

FOUR CHANNEL
MOS FE T P OW ER A MP LI FIE R

HIGH 3
2 + LEVEL
+
CH

PROTECTION

HIGH PASS
FULL RANGE

160

REMOTE
SUBWOOFER
LEVEL CONTROL

CH1/2 CONTROLS
CH

CROSSOVER
MODE

INPUTS

CH CH

2- 2+

To Speaker
Terminals
of head unit

4- 4+

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 9

5-Channel Amplifier
Remote
Subwoofer Level Control

CX1800
CH1+ CH1- CH2- CH2+

To Speaker Terminals
of head unit

CH1/2 CONTROLS

+ 1

HIGH + 3
LEVEL
INPUTS

INPUT CONTROLS

SENSITIVITY

LEVEL

CROSSOVER

MODE
FULL

HIGH
PASS

FREQ

BASS BOOST

+18dB

INPUT CONTROLS

SENSITIVITY

LEVEL

CROSSOVER

FULL

LOW PASS

FREQ

100mV-2V 2-8V MIN

MAX

LOW PASS

90
Hz

HIGH PASS

100mV-2V 2-8V

LOW LEVEL INPUTS

SENSITIVITY

MIN

MAX

LEVEL

INPUT CONTROLS

FULL
LOW PASS

MODE

100mV-2V 2-8V MIN
4CH 5CH

FREQ

CROSSOVER

CH3+ CH3- CH4- CH4+

To Speaker Terminals
of head unit

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 10

+18dB

BASS BOOST

CH3/4 CONTROLS

CH5

INPUTS

MAX

POWER
PROTECT

+18dB

INPUT MODE BASS BOOST

CH5 CONTROLS

REMOTE SUBWOOFER
LEVEL CONTROL

MonoBlock Amplifier
CX1100M

LOW PASS
FREQUENCY

POWER

100

145

155

0 +18dB

REMOTE SUBWOOFER BASS BOOST
LEVEL CONTROL

160

MODE

LEVEL

FULL RANGE

MIN

CROSSOVER

LEFT

SENSITIVITY

MAX

RIGHT
PROTECTION

2-8V 100mV-2V

LOW

INPUT CONTROLS

LEVEL

R+

HIGH LEVEL

INPUTS

MOS FE T MO NOBLOC K P OW ER A MP LI FIE R

L+ L- R- R+

Remote
Subwoofer Level Control

To Speaker Terminals
of head unit

MonoBlock Amplifier
CX2000M

LEFT

RIGHT

POWER
+

INPUT
LEVEL

BASS
BOOST

CROSSOVER
FREQUENCY

R+

HIGH LEVEL

LOW

LEVEL

PROTECTION

REMOTE SUBWOOFER
LEVEL CONTROL
MIN

MAX

+12dB

40Hz

120Hz

INPUTS

MOS FE T MO NOBLOC K P OW ER A MP LI FIE R

L+ L- R- R+

To Speaker Terminals
of head unit

Remote Subwoofer
Level Control

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 11

Power and Speaker Wiring

2-Channel Amplifiers

2 Channel and Bridged Modes

CX250, CX450, CX550,
CX750, CX950, and CX1250

+
–
+
–

RIGHT
Speaker

Two
Channel
Mode

SPEAKER CONNECTIONS

SPEAKER
IMPEDANCE
2-8 OHMS

POWER CONNECTIONS
BATT+
REMOTE GROUND

LEFT
Speaker

FUSE

BRIDGED

Chassis
ground
point

to REMOTE TURN-ON
terminal of head unit

FUSE

+
–

Subwoofer

Bridged
Mode

SPEAKER CONNECTIONS

SPEAKER
IMPEDANCE
4-8 OHMS

POWER CONNECTIONS
BATT+
REMOTE GROUND

Battery

FUSE

BRIDGED

Chassis
ground
point

Connect the Positive (+) terminal of the
subwoofer to the L (+) amplifier terminal.

to REMOTE TURN-ON
terminal of head unit

Connect the Negative (-) terminal of the
subwoofer to the R (-) amplifier terminal.
FUSE

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 12

Battery

Power and Speaker Wiring

2-Channel Amplifiers

Tri-Mode

CX250, CX450, CX550,
CX750, CX950, and CX1250

Tri-mode operation allows you to connect this amplifier to a pair of main speakers plus
a subwoofer on one pair of output channels. The main speakers will operate in STEREO
while the subwoofer simultaneously operates in MONO.
To set up the amplifier to run in this mode, put the crossover switches in the FULL position.
Insert high pass filter capacitors and a low pass filter inductor into the wiring as shown
below. Be sure to check the table at the bottom of this page to determine the correct
capacitor and inductor values for the crossover frequency you wish to achieve.

Component values for
6dB Passive Crossover
FREQUENCY INDUCTOR CAPACITOR
80 Hz
100 Hz
120 Hz
150 Hz

7.5mH
6.5mH
5.5mH
4mH

470uF
330uF
330uF
220uF

Tri-Mode

SPEAKER CONNECTIONS

POWER CONNECTIONS
BATT+
REMOTE GROUND

FUSE

BRIDGED

Chassis
ground
point

High pass filter
crossover

MINIMUM
SPEAKER
IMPEDANCE
4 OHMS

to REMOTE TURN-ON
terminal of head unit

LEFT
Speaker

FUSE

High pass filter
crossover

Battery

RIGHT
Speaker

Low pass
filter inductor

SPEAKER
IMPEDANCE
8 OHMS

Subwoofer

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 13

Power and Speaker Wiring

4-Channel Amplifiers

4 Channel and Bridged Modes

CH2
Speaker

CX600, CX650, CX800 and CX1000

SPEAKER
IMPEDANCE
2-8 OHMS

CH1
Speaker

Four
Channel
Mode
FUSES

SPEAKER CONNECTIONS

CH2

CH 1

SPEAKER
IMPEDANCE
2-8 OHMS

CH 3

POWER CONNECTIONS
BATT+
REMOTE GROUND

CH4

CH1/2

CH3/4

BRIDGED

Chassis
ground
point

CH3
Speaker

to REMOTE TURN-ON
terminal of head unit

CH4
Speaker

FUSE

Battery

SPEAKER
IMPEDANCE
4-8 OHMS

Connect the Negative (-) terminal of the RIGHT subwoofer to
the CH2 (-) amplifier terminal.

RIGHT
Subwoofer

Connect the Positive (+) terminal of the RIGHT subwoofer to
the CH1 (+) amplifier terminal.

Bridged
Mode
FUSES

SPEAKER CONNECTIONS

CH 1

CH2

CH1/2
BRIDGED

CH 3

CH4

POWER CONNECTIONS
BATT+
REMOTE GROUND

CH3/4
BRIDGED

Chassis
ground
point

LEFT
Subwoofer
SPEAKER
IMPEDANCE
4-8 OHMS

Connect the Negative (-)
terminal of the LEFT
subwoofer to the CH4 (-)
amplifier terminal.
Connect the Positive (+)
terminal of the LEFT
subwoofer to the CH3 (+)
amplifier terminal.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 14

to REMOTE TURN-ON
terminal of head unit

FUSE

Battery

Power and Speaker Wiring

4-Channel Amplifiers

Tri-Mode

CX600, CX650, CX800 and CX1000

Tri-mode operation allows you to connect this amplifier to a pair of main speakers
plus a subwoofer on one pair of output channels. The main speakers will operate
in STEREO while the subwoofer simultaneously operates in MONO.
To set up the amplifier to run in this mode, put the crossover switches in the FULL
position. Insert high pass filter capacitors and a low pass filter inductor into the
wiring as shown below. Be sure to check the table at the bottom of this page to
determine the correct capacitor and inductor values for the crossover frequency
you wish to achieve.

SPEAKER
IMPEDANCE
8 OHMS

Tri-Mode

RIGHT
Subwoofer

Component values for
6dB Passive Crossover

High pass filter
crossover

CH3
Speaker

FREQUENCY INDUCTOR CAPACITOR
80 Hz
100 Hz
120 Hz
150 Hz

7.5mH
6.5mH
5.5mH
4mH

470uF
330uF
330uF
220uF

High pass filter
crossover

MINIMUM
SPEAKER
IMPEDANCE
4 OHMS

CH4
Speaker

Low pass
filter inductor

FUSES

SPEAKER CONNECTIONS

CH 1

CH2

POWER CONNECTIONS
BATT+ REMOTE GROUND

CH 4

CH3

CH1/2
BRIDGED

CH3/4
BRIDGED

Chassis
ground
point

High pass filter
crossover

to REMOTE TURN-ON
terminal of head unit

CH2
Speaker

–
+

MINIMUM
SPEAKER
IMPEDANCE
4 OHMS

High pass filter
crossover

–
+

FUSE

Battery

CH1
Speaker

Low pass
filter inductor

SPEAKER
IMPEDANCE
8 OHMS

LEFT
Subwoofer

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 15

Power and Speaker Wiring

5-Channel Amplifier

5 Channel Mode

Five
Channel
Mode

CX1800

CH5
Subwoofer

+
–
+
–

SPEAKER
IMPEDANCE
2-8 OHMS

SPEAKERS
CH5

CH2
Speaker

CH1
Speaker

SPEAKER
IMPEDANCE
2-8 OHMS

CH1/2 BRIDGED

CH 1

CH3

CH2

CH3/4
BRIDGED

FUSES

POWER CONNECTIONS
GROUND REMOTE
BATT+

CH4

Chassis
ground
point

SPEAKER
IMPEDANCE
2-8 OHMS

to REMOTE TURN-ON
terminal of head unit

CH3
Speaker

CH4
Speaker

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 16

FUSE

Battery

Power and Speaker Wiring

5-Channel Amplifier

Bridged Mode

CX1800

Connect the Negative (-) terminal of the RIGHT
subwoofer to the CH2 (-) amplifier terminal.
CH5
Subwoofer

Connect the Positive (+) terminal of the RIGHT
subwoofer to the CH1 (+) amplifier terminal.

SPEAKER
IMPEDANCE
2-8 OHMS

+
–

RIGHT
Subwoofer

SPEAKER
IMPEDANCE
4-8 OHMS

Bridged
Mode
SPEAKERS
CH5

CH1/2 BRIDGED

CH2

CH 1

CH3

CH3/4
BRIDGED

FUSES

POWER CONNECTIONS
GROUND REMOTE
BATT+

CH4

Chassis
ground
point

SPEAKER
IMPEDANCE
4-8 OHMS

to REMOTE TURN-ON
terminal of head unit

LEFT
Subwoofer
FUSE

Battery

Connect the Negative (-) terminal of the LEFT
subwoofer to the CH4 (-) amplifier terminal.
Connect the Positive (+) terminal of the LEFT
subwoofer to the CH3 (+) amplifier terminal.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 17

Power and Speaker Wiring

5-Channel Amplifier

Tri-Mode

CX1800

Tri-mode operation allows you to connect this amplifier to a pair of main speakers
plus a subwoofer on one pair of output channels. The main speakers will operate
in STEREO while the subwoofer simultaneously operates in MONO.
To set up the amplifier to run in this mode, put the crossover switches in the FULL
position. Insert high pass filter capacitors and a low pass filter inductor into the
wiring as shown below. Be sure to check the table at the bottom of this page to
determine the correct capacitor and inductor values for the crossover frequency
you wish to achieve.

Tri-Mode

Low pass
filter inductor

RIGHT
Subwoofer

Component values for
6dB Passive Crossover

High pass filter
crossover

FREQUENCY INDUCTOR CAPACITOR
80 Hz
100 Hz
120 Hz
150 Hz

7.5mH
6.5mH
5.5mH
4mH

470uF
330uF
330uF
220uF

SPEAKER
IMPEDANCE
8 OHMS

CH1
Speaker
MINIMUM
SPEAKER
IMPEDANCE
4 OHMS

High pass filter
crossover

CH2
Speaker

CH5
Subwoofer

SPEAKER
IMPEDANCE
2-8 OHMS

SPEAKERS
CH5

CH1/2 BRIDGED

CH3

FUSES

CH 2

CH 1

CH3/4
BRIDGED

POWER CONNECTIONS
GROUND REMOTE
BATT+

CH 4

Chassis
ground
point

to REMOTE TURN-ON
terminal of head unit

High pass filter
crossover

–
+

CH4
Speaker

High pass filter
crossover

–
+
SPEAKER
IMPEDANCE
8 OHMS

Low pass
filter inductor

LEFT
Subwoofer
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 18

CH3
Speaker

FUSE

MINIMUM
SPEAKER
IMPEDANCE
4 OHMS

Battery

Power and Speaker Wiring

Monoblock Amplifiers

MonoBlock Mode

CX1100M and CX2000M

+
–

Speaker

SPEAKER
IMPEDANCE
2-8 OHMS

MonoBlock
Mode

SPEAKER

FUSES

POWER CONNECTIONS
BATT+
REMOTE GROUND

Chassis
ground
point

to REMOTE TURN-ON
terminal of head unit

FUSE

Battery

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 19

Troubleshooting
If you experience operation or performance problems with this product, compare your
installation with the electrical wiring diagram on the previous pages. If problems persist,
read the following troubleshooting tips which may help eliminate the problems.
SYMPTOM

POSSIBLE REMEDY

Amplifier will not
power up.

Check to make sure you have a good ground connection.
Check that the Remote Input (Turn-On) has at least 3VDC.
Check that there is battery power on the (+) terminal.
Check that there is at least 12v.
Check all fuses, replace if necessary.
Make sure that the Protection LED is not illuminated. If it is lit, shut off
the amplifier briefly, and then repower it.

Protection LED
comes on when
amplifier is
powered up.

Check for short circuits on speaker leads.
Turn down the volume control on the head unit to prevent overdriving.
Remove speaker leads, and reset the amplifier. If the Protection LED still
comes on, then the amplifier is faulty and needs servicing.

No output.

Check that all fuses are OK.
Check that amplifier is properly grounded.
Check that the Remote Input (Turn-On) has at least 3VDC.
Check that the RCA audio cables are plugged into the proper inputs.
Check all speaker wiring.

Low output.

Reset the Level Control.
Check the Crossover Control settings.

Audio present in
only one channel.

Check the RCA interconnect cables.
Check all speaker wiring.

High hiss in the
speakers.

Disconnect all RCA inputs to the amplifiers. If the hiss disappears, then
plug in the component driving the amplifier and unplug its inputs. If the
hiss disappears at this point, go on until the faulty/noisy component is
found.
It is best to set the amplifier's input level control as low as possible. The
best subjective signal-to-noise ratio is achieved in this manner. Try to set
the head unit as high as possible (without distortion) and the amp input
level as low as possible.

Squealing noise
from speakers.

Check for improperly grounded RCA interconnects.

Distorted sound.

Check that the Input Level Control is set to match the signal level of the
head unit. Always try to set the Input Level as low as possible.
Check that all crossover frequencies are properly set.
Check for short circuits on the speaker leads.

Amplifier gets
very hot.

Check that the minimum speaker impedance for the amp model is correct.
Check that there is good air circulation around the amp. In some
applications, it may be necessary to add external cooling fan(s).

Engine noise
(static type)

This is usually caused by poor quality RCA cables,which can pick up
radiated noise. Use only the best quality cables, and route them away
from power cables.

Engine noise
(alternator
whine)

Check that speaker leads are not shorted to the vehicle chassis.
Check that the RCA grounds are not shorted to the vehicle chassis.
Check that the head unit is properly grounded.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 20

Specifications

2-Channel MOSFET Amplifiers

MODEL

CX250

CX450

CX550

CX750

CX950

CX1250

RMS POWER

75W x 2

110W x 2

125W x 2

220W x 2

300W x 2

380W x 2

200W X 2

300W X 2

400W X 2

800W X 2

1000W X 2

1250W X 2

400W X 1

600W x 1

800W x 1

1600W x 1

2000W x 1

2500W x 1

into 4 Ohms

MAX POWER
into 2 Ohms

BRIDGED POWER
into 4 Ohms

Min. speaker
impedance
THD
Frequency response

2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo
4 Ohm Mono Bridged
4 Ohm Mono Bridged
4 Ohm Mono Bridged
4 Ohm Mono Bridged
4 Ohm Mono Bridged
4 Ohm Mono Bridged
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
9Hz-50kHz
9Hz-50kHz
9Hz-50kHz
9Hz-50kHz
9Hz-50kHz
9Hz-50kHz

Signal-to-noise ratio 103dB
Channel separation 90dB
125+
Damping factor

103dB
90dB

125+

Crossover range
low pass
high pass

Bass boost

35Hz-160Hz 35Hz-160Hz 35Hz-160Hz 35Hz-160Hz 35Hz-160Hz 35Hz-160Hz
fixed, 200Hz 200Hz (fixed) 200Hz (fixed) 200Hz (fixed) 200Hz (fixed) 200Hz (fixed)
Variable 0 - +18dB
Variable 0 - +18dB
Variable 0 - +18dB
Variable 0 - +18dB
Variable 0 - +18dB
Variable 0 - +18dB

20A
Fuse rating
7-7/8"
Dimensions:
(11-7/8" x 2-5/8" x ...)

25A
10-9/16"

25A
12-3/16"

15A x 2
14-7/8"

5-Channel
MOSFET
Amplifier

4-Channel
MOSFET Amplifiers

25A x 2
16-13/16"

60A
19-3/8"

MonoBlock
MOSFET
Amplifiers

MODEL

CX600 CX650 CX800 CX1000 CX1800 CX1100M CX2000M

RMS POWER

75W x 4

100W x 4 150W x 4 200W x 4

into 4 Ohms

MAX POWER

200W X 4 250W X 4 400W X 4 500W X 4

into 2 Ohms

120W x 4 + 250W x 1
200W x 1

500W x 1

300W X 4 + 1100W X 1
600W x 1

2000W X 1

BRIDGED POWER

400W X 2 500W x 2 800W x 2 1000W x 2 600W x 2 +
n/a
n/a
600W x 1
Min. speaker
2 Ohm Stereo
2 Ohm Stereo
2 Ohm Stereo
2 Ohm Stereo
2 Ohm Stereo2 Ohm Stereo 2 Ohm Stereo
impedance
4 Ohm Mono
4 Ohm
Bridged
Mono
4 Ohm
Bridged
Mono
4 Ohm
Bridged
Mono
4 Bridged
Ohm Mono4Bridged
Ohm Mono Bridged
4 Ohm Mono Bridged
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
0.01%
THD
Frequency response 9Hz-50kHz9Hz-50kHz9Hz-50kHz9Hz-50kHz 9Hz-50kHz 9Hz-50kHz 9Hz-50kHz
103dB
103dB
103dB
103dB
103dB
103dB
Signal-to-noise ratio 103dB
90dB
90dB
90dB
90dB
90dB
90dB
Channel separation 90dB
125+
125+
125+
125+
125+
125+
125+
Damping factor
into 4 Ohms

Crossover range
low pass

35Hz-160Hz
35Hz-160Hz
35Hz-160Hz
35Hz-160Hz35Hz-160Hz 35Hz-160Hz 35Hz-160Hz

high pass

fixed, 200Hz
200Hz (fixed)
200Hz (fixed)
200Hz (fixed)
200Hz (fixed)200Hz (fixed) 200Hz (fixed)
Variable 0 -Variable
+18dB 0 -Variable
+18dB 0 -Variable
+18dB 0 - Variable
+18dB 0 - +18dB
Variable 0 - +18dB
Variable 0 - +18dB

Bass boost
Fuse rating

20A x 2
13-3/8"
Dimensions:
(11-7/8" x 2-5/8" x ...)

20A x 2
15-5/8"

25A x 2
80A
16-13/16" 23-7/8"

25A x 3
20"

25A
10-11/16"

25A x 2
16-13/16"

All specifications subject to change without notice.

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 21

Notes

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