Question about Kenwood KAC-X201T Car Audio Amplifier

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LOW VOLTAGE hi i have the KAC-PS201T AMPLIFIER and what its doing is that the led lights in the back are on . one for bms the other for low voltage and the other above the open/close button and also it does not want to open.what could be the problem and how would i trouble shoot it and do you know how many watts are comming out of the amp itself maxx

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Start with a voltage meter see if you have 12 v

check your ground
check all your connections ... "most the time i will simply rewire the whole sound system"

hope this helps

Posted on Dec 26, 2008

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1 Answer

On a kac-x650d does the power light stay on or flash


Hello mpredday,

The Kenwood Excelon KAC-X650D power light is ON during normal operation. It blinks blue to indicate BMS selection, yellow for low voltage, purple for DC voltage on the outputs, red for overheating, and green for a shorted or grounded speaker wire.

Hope this helps.

Jul 29, 2009 | Kenwood Car Amplifiers

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My lights dim in my car, is this bad and what can I do to stop this from...


Lights dimming in your car is an indicator of a low voltage problem. This can be caused many problems. You might want to have your system checked out to make sure it is running smoothly. Low voltage can be a serious problem. Low voltage will cause an amplifier to put out a DC voltage rather that AC, which can damage your speakers. Low voltage can also cause damage to an amplifier by not providing enough power to the amp to run properly. You can add batteries and/or capacitors to the system to help with voltage problems. Please consult with a professional to make sure you get what you need for your specific setup.

on May 12, 2010 | Car Amplifiers

1 Answer

Kac-ps201t problem


I had a similar problem with a KAC-X812D Kenwood amplifier.
My problem turned out to be that the RCA inputs were so sensitive, they picked up interference from my head unit through the RCAs.
I replaced the head unit with a newer model, and had no problems after.

This may not be your case, but hope it helps.

Dec 15, 2008 | Kenwood KAC-9152D Car Audio Amplifier

1 Answer

Alpine MRV-1507 "low Voltage"


If it indicates that you have an open shield ground, read through the following page. It will show you how to test the shield ground connection of your head unit..

Temporary RCA Shield Repair


Aug 14, 2008 | Alpine MRV-1507 Car Audio Amplifier

1 Answer

Jl amp


The amber is the low impedance indicator and can mean that the impedance of the load is too low or there is an internal fault (shorted output transistors).

The blue LED indicates that the voltage is too low. This can be due to a bad connection or low battery voltage.You need to measure the DC voltage across the B+ and ground terminals of the amp to confirm that they're at or above 12v.

Let me know if you have any other questions.


Aug 11, 2008 | Jl Audio 1000/1 Car Audio Amplifier

1 Answer

Doesn't turn on


You need to confirm that the B+ voltage isn't dropping at the amp.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

May 21, 2008 | Kenwood KAC-9102D Car Audio Amplifier

1 Answer

My kenwood kac7201 amp wont turn on but it has power to it


Recheck the voltage precisely like this:

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Jan 22, 2008 | Kenwood KAC-7201 Car Audio Amplifier

1 Answer

Kenwood KAC-PS201T


The first thing you must do is to confirm that you have voltage at the amp. Just because the fuses look good, that doesn't mean you're getting power to the amp.

With your multimeter set to DC volts, the black meter lead on the ground terminal of the amp and the head unit on (so the amp will have remote voltage applied), touch the red lead alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low.

Jan 21, 2008 | Kenwood KAC-X201T Car Audio Amplifier

1 Answer

Doesn't turn on


Measure the DC voltage across the B+ and ground terminals as well as across remote and ground. If you have less than 11 volts when the amp tries to power up, the amp could be shutting down due to low voltage. If the voltage remains near or above 12v, disconnect all speaker wires and signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down, the amp likely has blown output transistors.

Oct 03, 2007 | Kenwood KAC-8103D Car Audio Amplifier

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