Boss Audio Systems CX800 - Manual

Troubleshooting

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 20

Specifications

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 21

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 5

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 10

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 14

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 15

CONTENTS

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 1

U S E R ’ S M A N U A L

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 4

General precautions

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 3

Features

About 2 Ohm operation

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 6

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 13

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 12

Notes

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 7

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 9

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 16
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 17

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 18

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 19

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 8

CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 11

Notes

Notes

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.

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.

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.

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.

T

ri-Mode

Before installing and using your
new

amplifier, please be-

come familiar with all the infor-
mation 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 .

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.

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.

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.

Low-level (RCA) input wiring is preferred for best audio performance. Always use
a high-quality RCA cable for best audio performance.

Tri-Mode

RIGHT
Speaker

LEFT
Speaker

To Audio

Outputs of head

unit or signal

processor

amplifier

Low-level (RCA) input wiring is preferred for best audio performance. Always use
a high-quality RCA cable for best audio performance.

To FRONT Audio
Outputs of head
unit or signal
processor

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.

4-Channel Amplifiers

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

CH5
Subwoofer

T

ri-Mode

CH4
Speaker

CH3
Speaker

Low-level (RCA) input wiring is preferred for best audio performance. Always use
a high-quality RCA cable for best audio performance.

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.

MonoBlock Amplifier

To Speaker Terminals

of head unit

MonoBlock Amplifier

To Speaker Terminals

of head unit

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

9

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

5CH Mode

17

5CH Power and Speaker wiring

Bridged Mode

18

5CH Power and Speaker wiring

TriMode

19

MonoBlock Power

and

Speaker wiring

20

Troubleshooting

21

Specifications

Congratulations on your
purchase of a

CHAOS EXXTREME 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
your choice for car audio
entertainment!

All specifications subject to change without notice.

page

RMS POWER

into 4 Ohms

MAX POWER

into 2 Ohms

BRIDGED POWER

into 4 Ohms

Min. speaker
impedance

THD

Frequency response

Signal-to-noise ratio

Channel separation

Damping factor

Crossover range

low pass

high pass

Bass boost

Fuse rating

Dimensions:
(11

-7/8

" x 2

-5/8

" x ...)

MODEL

4- Ch a n ne l
MO SF ET A mp l i fi e r s

CX250
CX450
CX550
CX750
CX950
CX1250

Two Channel
MOSFET Car Audio
Amplifiers

CX600
CX650
CX800
CX1000

Four Channel
MOSFET Car Audio
Amplifiers

RMS POWER

into 4 Ohms

MAX POWER

into 2 Ohms

BRIDGED POWER

into 4 Ohms

Min. speaker
impedance

THD

Frequency response

Signal-to-noise ratio

Channel separation

Damping factor

Crossover range

low pass

high pass

Bass boost

Fuse rating

Dimensions:
(11

-7/8

" x 2

-5/8

" x ...)

MODEL

2- Ch a n ne l MOS FET Am pl i f i er s

CX1800

Five Channel
MOSFET Car Audio
Amplifier

5- Ch a n ne l
MO SF ET
A mp l i fi e r

CX1100M
CX2000M

MonoBlock
MOSFET Car Audio
Amplifier

Mo n oB l oc k
MO SF ET
A mp l i fi e r s

500W x 1

2000W X 1

n/a

2 Ohm Stereo
4 Ohm Mono Bridged

0.01%

9Hz-50kHz

103dB

90dB

125+

35Hz-160Hz

200Hz (fixed)

Variable 0 - +18dB

25A x 2

16-13/16"

CX2000M

200W x 1

600W x 1

SYMPTOM

POSSIBLE REMEDY

Two
Channel
Mode

MonoBlock
Mode

Five
Channel
Mode

Bridged
Mode

Connect the Negative (-) ter

minal of the RIGHT
subwoofer to the CH2 (-) amplifier ter

minal.

Connect the Positive (+) ter

minal of the RIGHT
subwoofer to the CH1 (+) amplifier ter

minal.

Connect the Negative (-) ter

minal of the LEFT
subwoofer to the CH4 (-) amplifier ter

minal.

Connect the Positive (+) ter

minal of the LEFT
subwoofer to the CH3 (+) amplifier ter

minal.

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

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

Bridged
Mode

Four
Channel
Mode

Bridged
Mode

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

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

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.

To FRONT Audio Outputs of
head unit or
signal processor

Remote Subwoofer

Level Control

To Audio Outputs of head
unit or
signal processor

To REAR Audio Outputs of
head unit or
signal processor

To Speaker Terminals
of head unit

To Speaker Terminals
of head unit

To Speaker Terminals
of head unit

High pass filter
crosso

ver

To Speaker
Terminals
of head unit