Kenwood Excelon KAC-X521 Car Audio Amplifier - Answered Questions & Fixed issues


its a decently old amp i would replace amp. the capacitors are probly going bad kenwood is notoryesly bad for that

Kenwood Excelon... | Answered on Jul 08, 2010 | 143 views


If disconnecting all power wires, and replacing all fuses (including inline ones) doesnt reset it. then its toast. Hate to break it to you :( Contact the manufacturer if you feel it is under warranty.

Kenwood Excelon... | Answered on Apr 14, 2010 | 146 views


2 things could shut your amp...to low of a ohm load, or very low voltage drops. I need some more info to help you out.
1. Is the amp really hot when it shuts off?
2. Is it a mono sub amp or 2 channel stereo amp?
3.What ohm's are your subs & are they SVC or DVC?
4. How do you have them wired to the amp?
You can email me at thefowlerfam09@yahoo.com I have a idea whats going on just need some more info.

Kenwood Excelon... | Answered on Apr 03, 2010 | 155 views


Red lights and error codes usually mean a fault ha occurred. Usually blown output transistors or input power supply caps are to blame. Don't try to fix unless you are comfortable with doing that and have the equipment. Also try emailing Kenwood tech support, they will be happy to tell you exactly what the error code is and possibly why it is happening.

Kenwood Excelon... | Answered on Dec 15, 2009 | 377 views


Hello mogly20,

The amp probably won't know if it's you or the homeless guy, so try smashing a glass bottle on it like he did. If that doesn't work, I'd recommend you locate another homeless guy and buy another amp.

Hope this helps.

Kenwood Excelon... | Answered on Aug 09, 2009 | 842 views


bad speaker connection or rca check them

Kenwood Excelon... | Answered on Aug 07, 2009 | 197 views


check speaker and power source

Kenwood Excelon... | Answered on Aug 07, 2009 | 359 views


low voltage check power source

Kenwood Excelon... | Answered on Jun 26, 2009 | 285 views


check your remote connection

Kenwood Excelon... | Answered on Jun 26, 2009 | 168 views


check ground, most amps required that you ground straight from the batt. also check your rca jacks

Kenwood Excelon... | Answered on Mar 06, 2009 | 237 views


wireing an amp can be tough it starts from the e.q.the e.q. must have a sub out.

Kenwood Excelon... | Answered on Mar 02, 2009 | 85 views


I do believe this is caused by one of your amp fuses. Depending on which + on the amp is being used. That channel has a blown fuse. have you tried running + and -, + and - to both channels to see if both subs worked? If one sub doesn't then it's a blown fuse or scarred fuse and needs to be changed.

Kenwood Excelon... | Answered on Feb 11, 2009 | 771 views


According to page 7 of the radio's manual, E-02 means the amp has failed and DC is being applied to the speakers. It also says "Turn the POWER switch "OFF" and release the protection."

Kenwood Excelon... | Answered on Mar 05, 2008 | 455 views


you probably blew it up. Whenever you smell that smell it is almost always a capacitor in there that blew.

Kenwood Excelon... | Answered on Jun 19, 2007 | 97 views


There is a setting that turns off and on the subwoofer

Kenwood Car... | Answered on Jan 07, 2020 | 24 views


I think there is a switch to go from output 3+4 to subwoofer

Kenwood Car... | Answered on Jan 04, 2020 | 24 views


Your Kenwood has a component or wiring fault that has to be corrected before normal operation can resume.

Kenwood Car... | Answered on Dec 22, 2019 | 22 views


Make sure ground and power to the AMP are perfect (clean and tight). Afterwards unplug all the speaker wires and/or RCA speaker connections. Does the light still flash and power down after it is reset? If so, the AMP may be damaged. If not, then one of your speaker wires are shorted. Plug one speaker in at a time. One of them should cause a negative reaction.

Kenwood Car... | Answered on Dec 18, 2019 | 24 views


Page 13 says it is activated by the user. It tells you to treasure the code. Ask the last user. Take it to a Kenwood Service centre. Try a reset as shown on Page 3 of the manual.

http://manual.kenwood.com/files/B64-4039-00_K.pdf

Kenwood Car... | Answered on Dec 03, 2019 | 36 views

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