Boss Audio Systems Car Amplifier CX1800 User Manual

U S E R ’ S M A N U A L  
page CONTENTS  
2
2
3
3
4
4
4
5
6
9
Introduction  
Two Channel  
MOSFET Car Audio  
Amplifiers  
CX250  
CX450  
CX550  
CX750  
CX950  
CX1250  
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  
Four Channel  
MOSFET Car Audio  
Amplifiers  
CX600  
CX650  
CX800  
CX1000  
Five Channel  
MOSFET Car Audio  
Amplifier  
CX1800  
12 2CH Power and Speaker wiring  
2CH and Bridged Modes  
MonoBlock  
CX1100M  
CX2000M  
13 2CH Power and Speaker wiring  
MOSFET Car Audio  
Amplifier  
TriMode  
14 4CH Power and Speaker wiring  
4CH and Bridged Modes  
Congratulations on your  
purchase of a  
CHAOS EXXTREME Amplifier.  
15 4CH Power and Speaker wiring  
TriMode  
16 5CH Power and Speaker wiring  
5CH Mode  
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.  
17 5CH Power and Speaker wiring  
Bridged Mode  
18 5CH Power and Speaker wiring  
TriMode  
19 MonoBlock Power and Speaker wiring  
20 Troubleshooting  
Thank you for making  
your choice for car audio  
entertainment!  
21 Specifications  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 1  
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)  
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.  
• Tri-Mode capable  
(except CX1100M and CX2000M)  
• MOSFET PWM (Pulse Width  
Modulated) Power Supply  
• 2 Ohm stable stereo operation  
with output power increase  
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.  
• Thermal and speaker short  
protection  
• Soft turn-on circuit  
• Remote turn-on/turn-off circuit  
• Variable input gain control  
• Variable low pass crossover(s)  
• Fixed high pass crossover(s)  
• Variable 0 to +18dB Bass Boost  
If you lack adequate current, your  
music reproduction will be distorted.  
• 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  
Before making or breaking power  
connections in your system,  
new  
amplifier, please be-  
come familiar with all the infor-  
mation contained in this manual.  
disconnect the vehicle battery. Confirm  
that your head unit or other equipment  
is turned off while connecting the input  
jacks and speaker terminals.  
Please keep this manual in a safe  
place for future reference.  
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.  
• 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.  
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.  
• 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 .  
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.  
Installation precautions  
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 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.  
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.  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 4  
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.  
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.  
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.  
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.  
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.  
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.  
Don't misuse the  
level control!  
5. If multiple amplifiers are being used  
in your system, either:  
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.  
• 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-  
Do not adjust this input level to  
maximum unless your input level  
requires it.  
• 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  
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.  
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.  
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  
REMOTE SUBWOOFER  
LEVEL CONTROL  
LEFT  
RIGHT  
INPUT  
LEVEL  
BASS  
POWER  
PROTECTION  
HIGH PASS  
130  
BOOST  
100  
40  
145  
155  
FULL RANGE  
LOW PASS  
+ L  
R +  
MIN  
MAX  
0
+12dB  
35  
160  
HIGH LEVEL  
W LE
MODE  
LOW PASS FREQ, Hz  
INPUTS  
CROSSOVER  
T W O   C H A N N E L   M O S F E T   P O W E R   A M P L I F I E R  
To Audio  
Outputs of head  
unit or signal  
processor  
4-Channel Amplifiers  
CX600, CX650, CX800, and CX1000  
Remote Subwoofer  
Level Control  
CH  
1
CH3/4 CONTROLS  
CROSSOVER LOW PASS INPUT  
INPUT  
LEVEL  
BASS LOW PASS  
CROSSOVER  
MODE  
MODE  
FREQ  
BOOST  
FREQ  
POWER  
PROTECTION  
100  
40  
5  
155  
100  
40  
145  
155  
FULL  
RANGE  
HIGH PASS  
FULL RANGE  
35  
160 MIN MAX  
MIN MAX  
0
+12dB 35  
160  
Hz  
Hz  
REMOTE  
SUBWOOFER  
LEVEL CONTROL  
CH1/2 CONTROLS  
C
C
C
C
H 1  
H2  
H3  
H4  
LOW  
LEVEL  
+ HIGH  
LEVEL  
CH  
4
+
+
+
F O U R   C H A N N E L  
M O S F E T   P O W E R   A F I E R  
INPUTS  
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 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.  
NOTE: Do not connect BOTH the high level and low level inputs from your  
receiver to your amplifier at the same time!  
5-Channel Amplifier  
CX1800  
Remote Subwoofer  
Level Control  
2 CONTROLS  
NPUT CONTROLS  
CROSSOVER  
BASS BOOST  
0 +
CH  
CH  
1
3
CH  
5 R  
INPUT CONTROLS  
CROSSOVER  
HIGH  
LEVEL MODE  
PASS  
FULL  
ENSITIVITY  
FULL  
LOW PASS  
SENSITIVITY  
LEVEL  
FREQ  
FREQ  
90  
C
H 1  
2  
+
+
LOW PASS  
100mV-2V 2-8V  
45  
MIN MAX  
45  
90  
Hz  
100mV-2V 2-8V MIN MAX  
4CH  
Hz  
C
C
H3  
H
5CH  
HIGH PASS  
POWER  
HIGH  
LEVEL  
INPUTS  
PROTECT  
0
+18dB  
MIN MAX  
FULL  
LOW PASS  
90  
45 FREQ  
INPUT MODE BASS BOOST  
CH  
5 L  
100mV-2V 2-8V  
SENSITIVITY  
0
+18dB  
CH  
2
CH  
4
REMOTE SUBWOOFER  
LEVEL CONTROL  
LEVEL MODE  
CH5 INPUTS  
INPUT CONTROLS  
CROSSOVER  
BASS BOOST  
CH5 CONTROLS  
LOW EVEL IN
H3/4 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  
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!  
MonoBlock Amplifier  
CX1100M  
Remote Subwoofer  
Level Control  
LOW PASS  
FREQUENCY  
LEFT  
RIGHT  
MODE  
LEVEL  
SENSITIVITY  
2-8V 100mV-2V  
POWER  
PROTECTION  
100  
145  
40  
155  
L R +  
HIGH LEVEL  
+
0
+18dB  
35  
FULL RANGE  
MIN  
MAX  
160  
Hz  
OW  
LEV
REMOTE SUBWOOFER  
LEVEL CONTROL  
BASS BOOST  
CROSSOVER  
INPUT CONTROLS  
UTS  
M O S F E T   M O N O B L O C K   P O W E R   A M P L I F I R  
To Audio Outputs of head  
unit or  
signal processor  
MonoBlock Amplifier  
CX2000M  
Remote Subwoofer  
Level Control  
LEFT  
RIGHT  
INPUT  
LEVEL  
BASS  
CROSSOVER  
PROTECTION  
POWER  
BOOST FREQUENCY  
L R +  
HIGH LEVEL  
REMOTE SUBWOOFER  
LEVEL CONTROL  
+
IN
L
MIN  
MAX  
0
+12dB  
40Hz  
120Hz  
M O S F E T   M O N O B L O C K   P O W E R   A M P L I F I E 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  
Remote  
Subwoofer Level Control  
REMOTE SBWOOFER  
LEVEL CONTROL  
LEFT  
RIGHT  
INPUT  
LEVEL  
BASS  
POWER  
PROTECTION  
HIGH PASS  
130  
BOOST  
100  
40  
145  
155  
FULL RANGE  
LOW PASS  
R +  
+
MIN  
MAX  
0
+12dB  
35  
160  
LOW PASS FREQ, Hz  
HGLEVEL  
LOW LEVEL  
MODE  
INPUTS  
CROSSOVER  
T W O   C H A N N E L   M O S F E T   P O W E R   A M P L I F I E R  
L+ L- R- R+  
To Speaker Terminals  
of head unit  
Remote  
Subwoofer Level Control  
4-Channel Amplifiers  
CX600, CX650, CX800, and CX1000  
CH  
1
CH  
2
CH3/4 CONTROLS  
CROSSOVER LOW PASS INPUT  
INPUT  
LEVEL  
BASS LOW PASS  
CROSSOVER  
MODE  
MODE  
FREQ  
LEVEL  
BOOST  
FREQ  
POWER  
PROTECTION  
100  
40  
145  
155  
100  
40  
145  
155  
FULL  
RANGE  
HIGH PASS  
FULL RANGE  
35  
160 MIN MAX  
MIN MAX  
0
+12dB 35  
160  
Hz  
Hz  
REMOTE  
SUBWOOFER  
LEVEL CONTROL  
CH1/2 CONTROLS  
C
C
C
H 1  
H2  
H 3  
4  
LOW  
LEVEL  
HIGH  
LEVEL  
CH  
3
CH  
4
+
+
+
+
F O U R   C H A N N E L  
M O S F E T   P O W E R   A M P L I F I E R  
INPUT
To Speaker  
Terminals  
of head unit  
CH CH CH CH  
1+ 1- 2- 2+  
CH CH CH CH  
3+ 3- 4- 4+  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 9  
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!  
5-Channel Amplifier  
Remote  
Subwoofer Level Control  
CX1800  
CH1+ CH1- CH2- CH2+  
To Speaker Terminals  
of head unit  
CH1/2 CONTROLS  
INPUT CONTROLS  
CROSSOVER  
BASS BOOST  
0 +18dB  
CH  
1
CH  
3
CH  
5 R  
INPUT CONTROLS  
CROSSOVER  
LOW PASS  
HIGH  
LEVEL MODE  
PASS  
FULL  
SENSITIVITY  
FULL  
SENSITIVITY  
LEVEL  
FREQ  
Hz  
FREQ  
90  
C
C
H 1  
H2  
+
+
LOW PASS  
45  
100mV-2V 2-8V  
100mV-2V 2-8V  
4CH 5CH  
MIN MAX  
45  
90  
Hz  
MIN MAX  
Hz  
C
C
H3  
H4  
HIGH PASS  
POWER  
HIGH  
+
+
LEVEL  
INPUTS  
PROTECT  
0
+18dB  
MIN MAX  
90  
45 FREQ  
INPUT MODE BASS BOOST  
FULL  
LOW PASS  
CH  
5 L  
100mV-2V 2-8V  
SENSITIVITY  
0
+18dB  
CH  
2
CH  
4
REMOTE SUBWOOFER  
LEVEL CONTROL  
LEVEL MODE  
CH5 INPUTS  
CH5 CONTROLS  
INPUT CONTROLS  
CROSSOVER  
BASS BOOST  
LOW LEVEL INPUTS  
CH3/4CONTROLS  
CH3+ CH3- CH4- CH4+  
To Speaker Terminals  
of head unit  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 10  
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!  
MonoBlock Amplifier  
CX1100M  
LOW PASS  
FREQUENCY  
LEFT  
RIGHT  
MODE  
LEVEL  
SENSITIVITY  
2-8V 100mV-2V  
POWER  
PROTECTION  
100  
145  
40  
155  
+ L  
HIGH LVEL  
R +  
0
+18dB  
35  
160  
FULL RANGE  
MIN  
MAX  
Hz  
LOW  
LEVEL  
REMOTE SUBWOOFER  
LEVEL COTROL  
BASS BOOST  
CROSSOVER  
INPUT CONTROLS  
INPUTS  
M O S F E T   M O N O B L O C K   P O W E R   A M P L I F I E R  
L+ L- R- R+  
Remote  
Subwoofer Level Control  
To Speaker Terminals  
of head unit  
MonoBlock Amplifier  
CX2000M  
LEFT  
RIGHT  
INPUT  
LEVEL  
BASS  
CROSSOVER  
FREQUENCY  
PROTECTION  
POWER  
BOOST  
L R +  
HGH LEVE
REMOTE SUBWOOFER  
LEVEL CONTROL  
+
LOW  
INPUTS  
LEVEL  
MIN  
MAX  
0
+12dB  
40Hz  
120Hz  
M O S F E T   M O N O B L O C K   P O W E R   A M P L I F I E R  
L+ L- R- R+  
Remote Subwoofer  
Level Control  
To Speaker Terminals  
of head unit  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 11  
Power and Speaker Wiring  
2 Channel and Bridged Modes  
2-Channel Amplifiers  
CX250, CX450, CX550,  
CX750, CX950, and CX1250  
LEFT  
Speaker  
+
+
RIGHT  
Speaker  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
Two  
Channel  
Mode  
SPEAKERCONNECTIONS  
POWER CONNECTIONS  
BATT+  
REMOTE GROUND  
L
R
FUSE  
BRIDGED  
Chassis  
ground  
point  
to REMOTE TURN-ON  
terminal of head unit  
FUSE  
Battery  
SPEAKER  
IMPEDANCE  
4-8 OHMS  
+
Subwoofer  
Bridged  
Mode  
SPEAKER CONNECTIONS  
POWER CONNECTIONS  
BATT+ REMOTE GROUND  
L
R
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  
Battery  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 12  
Power and Speaker Wiring  
Tri-Mode  
2-Channel Amplifiers  
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  
7.5mH  
6.5mH  
5.5mH  
4mH  
470uF  
330uF  
330uF  
220uF  
100 Hz  
120 Hz  
150 Hz  
Tri-Mode  
SPEAKER CONNECTIONS  
POWER CONNECTIONS  
BATT+  
REMOTE GROUND  
L
R
FUSE  
BRIDGED  
Chassis  
ground  
point  
High pass filter  
crossover  
to REMOTE TURN-ON  
terminal of head unit  
LEFT  
Speaker  
MINIMUM  
SPEAKER  
IMPEDANCE  
4 OHMS  
FUSE  
Battery  
High pass filter  
crossover  
RIGHT  
Speaker  
SPEAKER  
IMPEDANCE  
8 OHMS  
Low pass  
filter inductor  
Subwoofer  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 13  
Power and Speaker Wiring  
4 Channel and Bridged Modes  
4-Channel Amplifiers  
CX600, CX650, CX800 and CX1000  
CH2  
Speaker  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
CH1  
Speaker  
Four  
Channel  
Mode  
FUSES  
SPEAKER CONNECTIONS  
CH CH  
POWER CONNECTIONS  
CH  
CH  
4
BATT+  
REMOTE GROUND  
1
2
3
CH1/2  
CH3/4  
BRIDGED  
BRIDGED  
Chassis  
ground  
point  
CH3  
Speaker  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
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 CH  
POWER CONNECTIONS  
CH  
CH  
4
BATT+  
REMOTE GROUND  
1
2
3
CH1/2  
CH3/4  
BRIDGED  
BRIDGED  
Chassis  
ground  
point  
LEFT  
Subwoofer  
to REMOTE TURN-ON  
terminal of head unit  
Connect the Negative (-)  
terminal of the LEFT  
subwoofer to the CH4 (-)  
amplifier terminal.  
SPEAKER  
IMPEDANCE  
4-8 OHMS  
FUSE  
Battery  
Connect the Positive (+)  
terminal of the LEFT  
subwoofer to the CH3 (+)  
amplifier terminal.  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 14  
Power and Speaker Wiring  
Tri-Mode  
4-Channel Amplifiers  
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  
RIGHT  
Subwoofer  
Tri-Mode  
Component values for  
High pass filter  
crossover  
6dB Passive Crossover  
CH3  
Speaker  
FREQUENCY INDUCTOR CAPACITOR  
80 Hz  
7.5mH  
6.5mH  
5.5mH  
4mH  
470uF  
330uF  
330uF  
220uF  
MINIMUM  
SPEAKER  
IMPEDANCE  
4 OHMS  
100 Hz  
120 Hz  
150 Hz  
High pass filter  
crossover  
CH4  
Speaker  
Low pass  
filter inductor  
FUSES  
SPEAKER CONNECTIONS  
CH CH  
POWER CONNECTIONS  
BATT+ REMOTE GROUND  
CH  
1
CH  
4
2
3
CH1/2  
CH3/4  
BRIDGED  
BRIDGED  
Chassis  
ground  
point  
High pass filter  
crossover  
to REMOTE TURN-ON  
terminal of head unit  
CH2  
+
Speaker  
MINIMUM  
FUSE  
Battery  
SPEAKER  
IMPEDANCE  
4 OHMS  
High pass filter  
crossover  
+
CH1  
Speaker  
Low pass  
filter inductor  
LEFT  
Subwoofer  
SPEAKER  
IMPEDANCE  
8 OHMS  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 15  
Power and Speaker Wiring  
5 Channel Mode  
5-Channel Amplifier  
CX1800  
Five  
Channel  
CH5  
Subwoofer  
Mode  
+
CH1  
Speaker  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
+
CH2  
Speaker  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
CH/2 BRIDGED  
SPEAKERS  
FUSES  
POWER CONNECTIONS  
GROUND REMOTE BATT+  
CH  
CH  
CH  
1
2
CH  
5
CH  
3
CH3/4  
4
BRIDGED  
Chassis  
ground  
point  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
to REMOTE TURN-ON  
terminal of head unit  
CH3  
Speaker  
CH4  
Speaker  
FUSE  
Battery  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 16  
Power and Speaker Wiring  
Bridged Mode  
5-Channel Amplifier  
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  
SPEAKER  
IMPEDANCE  
4-8 OHMS  
RIGHT  
Subwoofer  
+
Bridged  
Mode  
CH1/2 BRIDGED  
SPEAKERS  
FUSES  
POWER CONNECTIONS  
CH  
CH  
CH  
1
2
CH  
5
GROUND REMOTE  
BATT+  
CH  
3
4
CH3/4  
BRIDGED  
Chassis  
ground  
point  
to REMOTE TURN-ON  
terminal of head unit  
LEFT  
Subwoofer  
SPEAKER  
IMPEDANCE  
4-8 OHMS  
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  
Tri-Mode  
5-Channel Amplifier  
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.  
SPEAKER  
IMPEDANCE  
8 OHMS  
Tri-Mode  
Low pass  
filter inductor  
RIGHT  
Subwoofer  
Component values for  
6dB Passive Crossover  
FREQUENCY INDUCTOR CAPACITOR  
High pass filter  
crossover  
CH1  
Speaker  
80 Hz  
7.5mH  
6.5mH  
5.5mH  
4mH  
470uF  
330uF  
330uF  
220uF  
MINIMUM  
100 Hz  
120 Hz  
150 Hz  
High pass filter  
crossover  
SPEAKER  
IMPEDANCE  
4 OHMS  
CH2  
Speaker  
CH5  
Subwoofer  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
CH/2 BRIDGD  
CH  
SPEAKERS  
FUSES  
POWER CONNECTIONS  
GROUND REMOTE BATT+  
CH  
1
2
4
CH  
5
CH  
CH  
CH3/4  
BRIDGED  
3
Chassis  
ground  
point  
to REMOTE TURN-ON  
terminal of head unit  
High pass filter  
crossover  
FUSE  
Battery  
+
CH4  
Speaker  
High pass filter  
crossover  
MINIMUM  
SPEAKER  
IMPEDANCE  
4 OHMS  
CH3  
Speaker  
+
SPEAKER  
IMPEDANCE  
8 OHMS  
Low pass  
filter inductor  
LEFT  
Subwoofer  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 18  
Power and Speaker Wiring  
MonoBlock Mode  
Monoblock Amplifiers  
CX1100M and CX2000M  
+
Speaker  
SPEAKER  
IMPEDANCE  
2-8 OHMS  
MonoBlock  
Mode  
PEAKER  
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  
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.  
Amplifier will not  
power up.  
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.  
Check for short circuits on speaker leads.  
Protection LED  
comes on when  
amplifier is  
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.  
powered up.  
Check that all fuses are OK.  
No output.  
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.  
Reset the Level Control.  
Low output.  
Check the Crossover Control settings.  
Check the RCA interconnect cables.  
Check all speaker wiring.  
Audio present in  
only one channel.  
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.  
High hiss in the  
speakers.  
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.  
Check for improperly grounded RCA interconnects.  
Squealing noise  
from speakers.  
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.  
Distorted sound.  
Check that all crossover frequencies are properly set.  
Check for short circuits on the speaker leads.  
Check that the minimum speaker impedance for the amp model is correct.  
Amplifier gets  
very hot.  
Check that there is good air circulation around the amp. In some  
applications, it may be necessary to add external cooling fan(s).  
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  
(static type)  
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.  
Engine noise  
(alternator  
whine)  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 20  
Specifications  
2-Channel MOSFET Amplifiers  
MODEL  
CX250  
CX450  
CX550  
CX750  
CX950  
CX1250  
RMS POWER  
into 4 Ohms  
75W x 2  
110W x 2  
125W x 2  
220W x 2  
300W x 2  
380W x 2  
MAX POWER  
into 2 Ohms  
200W X 2  
400W X 1  
300W X 2  
600W x 1  
400W X 2  
800W x 1  
800W X 2  
1000W X 2  
2000W x 1  
1250W X 2  
2500W x 1  
BRIDGED POWER  
into 4 Ohms  
1600W x 1  
Min. speaker  
impedance  
2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo 2 Ohm Stereo  
4 Ohm Mono B4ridOghemd Mono B4ridOghemd Mono B4ridOghemd Mono B4ridOghemd Mono B4ridOghemd Mono Bridged  
0.01%  
0.01%  
9Hz-50kHz  
103dB  
90dB  
0.01%  
9Hz-50kHz  
103dB  
90dB  
0.01%  
9Hz-50kHz  
103dB  
90dB  
0.01%  
9Hz-50kHz  
103dB  
90dB  
0.01%  
9Hz-50kHz  
103dB  
90dB  
THD  
9Hz-50kHz  
103dB  
90dB  
Frequency response  
Signal-to-noise ratio  
Channel separation  
Damping factor  
125+  
125+  
125+  
125+  
125+  
125+  
Crossover range  
low pass  
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 - +18VdaBriable 0 - +18VdaBriable 0 - +18VdaBriable 0 - +18VdaBriable 0 - +18VdaBriable 0 - +18dB  
high pass  
Bass boost  
Fuse rating  
20A  
25A  
25A  
15A x 2  
14-7/8"  
25A x 2  
60A  
7-7/8"  
10-9/16"  
12-3/16"  
16-13/16"  
19-3/8"  
Dimensions:  
(11-7/8" x 2-5/8" x ...)  
5-Channel MonoBlock  
4-Channel  
MOSFET Amplifiers  
MOSFET  
Amplifier  
MOSFET  
Amplifiers  
MODEL  
CX600 CX650 CX800 CX1000 CX1800 CX1100M CX2000M  
RMS POWER  
into 4 Ohms  
75W x 4 100W x 4 150W x 4 200W x 4 120W x 4 + 250W x 1  
200W x 1  
500W x 1  
MAX POWER  
into 2 Ohms  
200W X 4 250W X 4 400W X 4 500W X 4 300W X 4 + 1100W X 1 2000W X 1  
600W x 1  
BRIDGED POWER  
into 4 Ohms  
400W X 2 500W x 2 800W x 2 1000W x 2 600W x 2 +  
600W x 1  
n/a  
n/a  
Min. speaker  
impedance  
2 Ohm Ster2eoOhm Ster2eoOhm Ster2eoOhm Stere2oOhm Stereo2 Ohm Stereo2 Ohm Stereo  
4 Ohm Mon4oOBhrimdgMedon4oOBhrimdgMedon4oOBhrmidgMedono4 BOrhidmgeMdono4BOrihdmgeMd ono B4riOdhgmedMono Bridged  
0.01%  
0.01%  
0.01%  
0.01%  
0.01%  
0.01%  
0.01%  
THD  
9Hz-50kHz9Hz-50kHz9Hz-50kHz9Hz-50kHz 9Hz-50kHz 9Hz-50kHz 9Hz-50kHz  
Frequency response  
Signal-to-noise ratio  
Channel separation  
Damping factor  
103dB  
90dB  
125+  
103dB  
90dB  
125+  
103dB  
90dB  
125+  
103dB  
90dB  
125+  
103dB  
90dB  
125+  
103dB  
90dB  
125+  
103dB  
90dB  
125+  
Crossover range  
low pass  
35Hz-160H3z5Hz-160H3z5Hz-160H3z5Hz-160Hz35Hz-160Hz35Hz-160Hz 35Hz-160Hz  
fixed, 200H2z00Hz (fixed20) 0Hz (fixed20) 0Hz (fixed2)00Hz (fixed)200Hz (fixed) 200Hz (fixed)  
Variable 0 -V+a1ri8adbBle 0 -V+a1ri8adbBle 0 -V+a1ri8adbBle 0 - +Va1r8iadbBle 0 - +V1a8rdiaBble 0 - +1V8adrBiable 0 - +18dB  
high pass  
Bass boost  
Fuse rating  
20A x 2  
13-3/8"  
20A x 2  
15-5/8"  
25A x 2  
80A  
25A x 3  
20"  
25A  
25A x 2  
16-13/16" 23-7/8"  
10-11/16"  
16-13/16"  
Dimensions:  
(11-7/8" x 2-5/8" x ...)  
All specifications subject to change without notice.  
CHAOS EXXTREME MOSFET Amplifier User’s Manual - page 21  
Notes  
Notes  
Notes  

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