Profile Stereo Amplifier 400MSX User Manual

MOSFET POWER AMPLIFIERS  
Installation Instructions / Owner's Manual  
400MSX  
600MSX  
 
SAFETY PRECAUTIONS  
Fuseamplifier'spowerwireatthebattery.  
Be sure to fuse the power wire within 12" of the car's battery. This will protect the car's  
battery in case of a short circuit between the power amplifier and battery. THIS IS A MUST,  
the amplifier's built-in fuse will only protect the power amplifier not the car's battery!  
Usehighgradewireconnectors.  
To ensure maximum power transfer and secure safe connections, it is recommended to use  
high grade connectors where needed.  
Donotrunanywiresunderneathvehicle.  
Exposed wires have a chance of being cut or damaged. It is best to run all wires through the  
vehicle under the carpet and/or side panels. This lends to a cleaner installation and less risk of  
damage.  
Usecautionwhenmountingamplifier.  
Remember there are many electrical wires, gas lines, vacuum lines, brake lines as well as a gas  
tank in the automobile. Make sure you know where they are when mounting the amplifier to  
avoidpuncturinglines, shortingwiresordrillingholesinthegastank.  
Runsignalwiresawayfromelectricalwires.  
To avoid possibility of induced noise from the car's electrical system (i.e. popping noises or  
engine noise), run wires away from the car's electrical wiring.  
Makeallgroundwiresasshortaspossibleandatthesamepoint.  
In order to reduce the chance of ground loops (i.e. engine noise), make the grounding wire as  
short as possible to reduce the wire's resistance. Also, when using multiple components, make  
sureallunitsaregroundedatthesamepoint.  
Avoidsharpedgeswhenrunningthewires.  
To avoid the possibility of power, signal or speaker shorts, be careful not to allow the  
amplifiers wires to come in contact with sharp edges. Use a grommet to protect the wire when  
runningthroughthefirewall.  
2
 
FEATURES AND BENEFITS  
DCOffsetProtection  
This circuit protects the output of the amplifier against DC voltage. If for some reason DC  
voltage is detected at the output stage, the amplifier will shut down protecting the speakers  
from direct current.  
ShortCircuitProtection  
The circuit protects the amplifier from damage due to a short found in the speakers or wiring.  
If one of the speakers or its wiring comes in contact with ground, the amplifier will shut down.  
To resume normal operation, correct the problem and turn the head unit off, then back on.  
Theamplifierwillresetandplayagain.  
Thermal Protection  
To protect the amplifier circuitry against damage caused by prolonged exposure to high  
temperatures, a thermal protection circuit is activated if the amplifier reaches excessively  
high operating temperature. Once the thermal circuit is activated, the amplifier will shut  
down to cool off. The Amplifier will automatically turn back on once it cools down to a safe  
operating temperature.  
ProtectionIndicator  
This red diagnostic L.E.D. indicates that the amplifier has gone into protection. Once on, the  
amplifier will have no output. To resume normal operation, turn head unit off and back on again.  
If the amplifier immediately goes back into protection, check for high temperature, short  
circuitsorlowimpedance.  
Built-inCrossover  
The amplifier is equipped with a built-in variable low pass crossovers. The crossover features  
a variable frequency selection (40Hz ~ 130Hz) for precise high or low pass filtering.  
BassBoost  
For added low frequency performance the amplifier is equipped with a variable 12 dB bass  
boost.  
3
 
PowerFusing  
Thisprotectstheamplifieragainstshortcircuitsandexcessivecurrent.  
Remote Turn-on  
Automatically turns amplifier on when connected to the head unit's remote output. The  
amplifier will turn on and off with the head unit to save current consumption. This control also  
operates the reset circuit for the amplifier's protection. It must be connected with the head  
unit in order to reset protection circuits.  
Gold Plated connections  
For positive contact, maximum power and signal transfer with minimal resistance.  
AdjustableInputSensitivity  
Allows you to fine-tune the level matching between your source and the power amplifier. The  
controls have been set at the factory to accept average output of most radios, however, fine  
tuning may be necessary to optimize signal to the amplifiers input stage.  
HighLevelInput  
Allowingforintegrationwith"FactorySoundSystems".  
StableTo2Ohm  
Stability to 2 ohms allowing multiple speaker connections.  
4
 
MOUNTING LOCATION  
Before you start the installation, it will be necessary to find a mounting location for the  
amplifier. Find a location in which the amplifier will receive adequate ventilation in order to  
dissipate the heat it develops during operation. Two popular mounting locations are in the  
trunkorundertheseat.  
Select the location in which you wish to mount the amplifier. Use caution when mounting  
amplifier, there are many wires, gas lines, vacuum lines, brake lines as well as a gas tank in  
the automobile. Make sure you know where they are when mounting the amplifier to avoid  
puncturing lines, shorting wires or drilling holes in the gas tank. Once you are ready, use a  
pencil to mark the mounting holes in the bottom panel. After you have marked the locations of  
the holes move amplifier out of the way and drill small starter holes to make the tapping  
screws easier to install. Use provided screws to tighten down the amplifier.  
LP  
X-over  
85  
Bass  
Boost  
Level  
Input  
Hi-Level Input  
L+ L- R+ R-  
Left  
PROTECTION  
POWER  
40  
130  
0
12  
Min  
Max  
Right  
5
 
POWER CONNECTIONS  
Speaker Output  
B+  
REM  
GND  
Fuse  
IN-LINE PPOWERR FUSE  
MOUNTED WWITHIIN 12"  
RADIO'SS REMOTE  
TURN-ONN OUTPUT  
FROM BBATTERYY RECOMMMMENDED  
(NOT PROOVIDED)  
-
+
94.7  
CAR BAATTERY  
+12V  
IMPORTANT! Before making any connections, disconnect the car's battery until the  
installation is completed to avoid possible damage to the electrical system.  
Connecttheamplifiertothecar'sbattery.  
At times, the amplifier will need to draw large levels of current that cannot be provided by any  
circuit in the car's fuse box. We recommended using a 4 to 8 gauge power wire for your  
connections depending on the amplifier and length of the wire. Strip one end of the wire to  
connect to the terminal on the amplifier marked B+. Loosen screw terminal and connect bare  
wire and tighten. Use caution to make sure no stray wire stands come in contact with  
surrounding terminals causing short circuits. Run the wire directly to the positive terminal of  
the car's battery. Make sure to use an in-line fuse within 12" of the car's battery to protect  
the electrical system and amplifier against short circuits and/or power surges.  
Connect the ground terminal of the amplifier to the car's chassis.  
For the ground connection, use a 4-8 gauge wire (black) to connect to the terminal marked  
GND and then connect it to the car's chassis. Try to keep the length of the cable as short as  
possible, preferably less than 6". Also make sure that the point on the car where the  
connection is to be made is free of paint and dirt.  
Connect the remote terminal of the amplifier to a switchable +12V source.  
This connection allows the amplifier to be turned on and off with the power control of the  
radio. If the radio has a REMOTE output terminal, connect it to the amplifier's terminal  
marked REMOTE (using a 16 gauge wire or heavier). Now when the radio is turned on, the  
amplifier will automatically turn on.  
6
 
SIGNAL CONNECTIONS  
Connecttheoutputoftheheadunit(AM/FMcassetteplayer, CD, orDAT)  
totheRCAinputterminalsoftheamplifier.  
To make these connections, we recommend high quality RCA cables, which are available at your  
local car audio retailer. Run signal wires away from electrical wires to avoid possibility of  
inducednoisefromthecar'selectricalsystem(i.e. poppingnoisesorenginenoise).  
TWO CHANNEL SIGNAL CONNECTIONS  
LP  
X-over  
85  
Bass  
Boost  
Level  
Input  
Hi-Level Input  
L+ L- R+ R-  
Left  
PROTECTION  
POWER  
40  
130  
0
12  
Min  
Max  
Right  
94.7  
7
 
HIGH LEVEL CONNECTIONS (OPTIONAL)  
If a low level RCA signal source is not available, you may still wire the amplifier with high-level  
or speaker level outputs from your head unit. However, only speaker leads from a "floating  
ground" system may be used (see diagram below). Use the provided plug to make the following  
connections .  
Note: The speaker leads from a "common ground" head unit systems should not be connected  
to the hi-level input terminals of the following connections.  
CAUTION! Before making any connections determine the type of radio to avoid possible  
damage to amplifier and/or radio.  
TWO CHANNEL CONNECTIONS:  
FLOATING GROUND RADIO (MOST COMMON TYPE)  
LP  
X-over  
85  
Bass  
Boost  
Level  
Input  
Hi-Level Input  
L+ L- R+ R-  
Left  
PROTECTION  
POWER  
40  
130  
0
12  
Min  
Max  
Right  
94.7  
LEFT +  
LEFT -  
RIGHT +  
RIGHT -  
8
 
SPEAKER CONNECTIONS  
Make the speaker connections using speaker wire that is at least 10 gauge or  
heavier.  
As with any audio component, proper phasing of the amplifier and speakers is essential for  
strong bass response. When connecting, make sure that positive (+) from the amplifier is  
connectedtothepositive(+)ofthespeaker, andthesamefornegative(-).  
SINGLE SPEAKER CONNECTION  
Speaker Output  
B+  
REM  
GND  
Fuse  
-
+
4 Ohm Sppeakers  
(2 Ohm Miinimum)  
TWO SPEAKER CONNECTION  
Speaker Output  
B+  
REM  
GND  
Fuse  
-
-
+
4 Ohm Sppeakers  
+
9
 
SETTING THE CROSSOVER AND BASS BOOST  
Select your crossover type and frequency.  
The amplifier is equipped with a built-in variable low -pass crossover network allowing you to  
select the desired crossover point for your subwoofers.  
manufacturesrecommendedcrossoverpoint.  
Please refer to speaker  
Bass  
Boost  
LP  
X-over  
85  
40  
130  
0
12  
Select the crossover point  
for your speakers.  
You can add up to 12dB bass boost by  
increasing the Bass Boost control.  
FINE TUNE THE SYSTEM  
Fine tune the amplifier's input sensitivity.  
Level  
Access to the gain sensitivity control for the California  
amplifier is located on the side panel. This gain control has  
been included to allow adjustment to properly match the  
output of the radio. This is one of the most misunderstood  
adjustments. By rotating the control in the clockwise  
direction, the amplifier's input will become more sensitive and  
Min  
Max  
the music will play louder. This is not a volume control and you will not get more power out of  
the amplifier in the maximum position! It may seem to deliver more output, but actually the  
system is only playing louder faster as you turn the volume control on the radio. Ideally, to  
properly level match the system the goal is to achieve maximum output from the amplifier  
withoutdistortionatabout3/4ofthevolumecontrol.  
To determine if the amplifier's gain is set properly, turn the system on and slowly increase the  
volume control. You should be able to use about 3/4 volume before the system gets loud but  
not distorting. It is very important when making these adjustments that you do not over drive  
the speakers (at point of distortion) this will cause permanent damage to the speakers. If you  
are unable to achieve 3/4 volume before distortion you will need to adjust gain control (in this  
case you would reduce the gain). The gain controls should be adjusted very slowly. It may help  
to have another person to assist you by adjusting the gain controls while you listen for  
distortion.  
10  
 
TROUBLE SHOOTING THE SYSTEM  
We have put together this trouble-shooting guide if you experience problems after installing  
the amplifier. Please keep in mind that the majority of problems incurred are caused by  
improper installation and not the equipment itself. In addition, there are many components in  
the system that could cause various signal problems such as inducted electrical noise and  
enginenoise.  
Before you can properly address the problem, you must first find the component that is  
causingtheproblem. Thiswilltakepatienceandaprocessofelimination.  
LOOK FOR....  
SOLUTION  
NoOutput  
Blown fuse  
Replace  
Bad RCA Cable(s)  
Replace  
+12V at power terminal  
+12V at remote terminal  
Grounding point clean and tight  
Head Unit's fader not in center position  
Check connection  
Check connection  
Check for ground w/meter  
Set to center position  
Low Output  
Checkleveladjustments  
Re-adjust  
Replace  
Bad RCAcable(s)  
Improperlevelmatching  
Re-adjust  
EngineNoise  
Grounding points are clean and tight  
Ground all components at same point  
Check for ground w/meter  
Ground at same point  
Change for better ground  
Replace  
Bad RCA cable(s)  
HighQuality shieldedRCA cables  
Rejects inductednoise  
Low Vehicle charging system and/or battery Fix and/or replace  
ProtectionL.E.D. Illuminated  
Speaker short  
Check speaker connection  
for short circuit  
Speaker grounding out  
Impedance too low  
Overheating  
Make sure speaker wires  
do not touch chassis ground  
Check speaker impedance  
(Min 2 ohm Stereo, 4 Mono)  
Check mounting location  
for Adequate air Circulation  
Speaker impedance too low  
11  
 
SPECIFICATIONS  
400MSX  
600MSX  
Max Power @ 4 Ohm  
RMS Power @ 4 Ohm  
Max Power @ 2 Ohm  
RMS Power @ 2 Ohm  
1 x 400W  
1 x 600W  
1 x 200W  
1 x 300W  
1 x 600W  
1 x 850W  
1 x 300W  
1 x 410W  
THD @ RMS Power  
<0.07%  
<0.07%  
Frequency Response  
10Hz ~ 94Hz (at-1dB)  
>105dB  
10Hz ~ 94Hz (at-1dB)  
>105dB  
Signal To Noise  
RCA Input Sensitivity  
RCA Input Impedance  
High Level Input Impedance  
Load Impedance  
200mV ~ 8V  
16K Ohms  
200mV ~ 8V  
16K Ohms  
100 Ohms  
100 Ohms  
2 ~ 8 Ohms  
Low Pass  
2 ~ 8 Ohms  
Low Pass  
Crossover Type (12dB/Octave)  
Crossover Frequency (Variable)  
Bass Boost @ 45Hz (Variable)  
Damping Factor  
40Hz ~ 130Hz (at-3dB)  
0dB ~ 12dB  
250  
40Hz ~ 130Hz (at-3dB)  
0dB ~ 12dB  
260  
Power Terminal Size  
4 Gauge  
4 Gauge  
Speaker Terminal Size  
Fuse Value (ATC/ATO Type)  
Size (H x D x W)  
6 Gauge  
6 Gauge  
2 x 20A  
2 1/4" x 9 3/4"x 11 3/4"  
3 x 20A  
2 1/4" x 9 3/4"x 16 1/8"  
Due to continuing product improvements, specification to change without notice.  
12  
 
LIMITED WARRANTY  
Profile Consumer Electronics, Inc. warrants this product to be free from defects in  
material and workmanship for a period of One (1) Year from the date of sale to the  
original consumer purchaser. If this product is proven to be defective within this one  
year period, Profile will repair it when said product is returned, with a copy of the  
datedsalesreceipt, freightprepaidtoProfile.  
This warranty is valid only in the United States. This warranty does not cover any  
expense incurred in the removal and/or re-installation of this product. This warranty  
does not cover any Profile product damaged by accident, misuse, abuse, improper line  
voltage, fire, water, lightning, or other acts of God. This warranty is void if any parts  
and/or service is/are furnished by anyone other than Profile. This warranty is void if  
thefactoryappliedserialnumberisalteredorremovedfromtheproduct.  
This warranty does not cover cartons, cases, batteries, broken or marred cabinets,  
magnetic tapes, or any other accessories used in connection with this product or  
consequentialdamagesduetoadefectintheproduct.  
Any implied warranties, including fitness for use and merchantability, are limited in  
duration to the period of the express warranty set forth above. No person is  
authorized to assume for Profile any other liability in connection with the sale of the  
product. Profile expressly disclaims liability for incidental and consequential  
damages that might be caused by this product. The remedies provided under this  
warranty are exclusive and lieu of all others.  
This warranty gives you specific legal rights. You may have other rights which vary  
from state to state or province to province. Some states or provinces do not allow  
limitation on how long warranties last, so the above may not apply to you. Additionally,  
some states/provinces do not allow the exclusion to limitation of consequential or  
incidentaldamages, sotheabovelimitationorexclusionmaynotapplytoyou.  
*Inthespacebelow, recordthemodelnumberthatislocatedonthebackoftheunit  
alongwiththepurchasedateandlocation.  
ModelNumber__________________  
PurchaseDate __________________ WherePurchased _________________  
RETAIN YOUR SALES RECEIPT ALONG WITH THIS CARD. IT IS YOUR ONLY  
VALIDDOCUMENTTORECEIVEWARRANTYSERVICE.  
 
WARRANTY REPAIR POLICY  
In the unlikely event of product failure, the following procedures  
should be followed  
1) The unit must be under the 1-year warranty period.  
2) The unit must have no physical damage.  
3) A copy of the original proof of purchase must be sent with the unit.  
4) Include a brief description of the problem or failure with the unit.  
5) Include the return street address and daytime telephone number.  
6) Allow 2~3 weeks for repair (this period includes shipping time).  
Send unit to :  
PROFILE CONSUMER ELECTRONICS, INC.  
15060 SHOEMAKER AVE  
SANTA FE SPRINGS, CA 90670  
TEL: (562)404-9393  
Note:  
All units failing to meet the above requirements will be  
subject to a charge and or may not be repaired.  
 
By  
PROFILE CONSUMER ELECTRONICS, INC.  
15060 SHOEMAKER AVE  
SANTA FE SPRINGS, CA 90670  
TEL: (562)404-9393 FAX: (562)404-9433  
WWW.PROFILEUSA.COM  
 

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