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Boss CX250 Manual

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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.
Tri-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
Tri-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-Cha nnel
MOSFET A mplif ie rs
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-Cha nnel MOS FET Am plifiers
5-Cha nnel
MOSFET
Amplif ier
MonoBloc k
MOSFET
Amplif iers
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 (-) 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.
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
crossover
To Speaker
Terminals
of head unit
… 24


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