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Audio Systems/kenwood amp not working (car audio)
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Question
I have a kenwood kac-x812d' it was working good for a few weeks till the other day I had it turned up then it quit, i looked back at it and the red light was flashing and the display was flashing or dimming with a e-03. I have tried to reset and it still does the same thing. I was running it at 1OHM. Now even if the only thing I have hooked up to it is the power, ground and remote still the same
Seems maybe the output stage has blown.
Do this: Remove power from the amp completely for at least 15 minutes. This will reset the protection circuit inside the amp. Then power it up with no load and inputs disconnected. See if it clears. If not, the output transistors are probably shot and will need repairs.
It's a great amp. Well worth a few bucks to fix it up and get it cranking again.
PS: check the subwoofer and the wiring; if it has a shorted voice coil wires which are touching and is placing a low impedance load on the amp that could be the source of the problem.
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Answers by Expert:
Cleggsan
Expertise
Audio Design Engineer; systems, loudspeakers, cd/dvd players, etc. I am knowledgeable in all high end audio equipment and installations. MAKE SURE YOU GIVE A MAKE AND MODEL NUMBER AND CAR IF IT IS AN AUTO QUESTION. Note: I am getting some who ask good questions that take a lot of time to research but then the questioner fails to read the answer. Please don't ask questions unless you are seriously looking for an answer. If you find an answer to your question otherwise then let me know with your reply. Thank you.
Experience
Have been associated with audio design, standards, testing and component systems for over 40 years.
Organizations
Life Fellow Member of Audio Engineering Society
Life Senior Member of Institute of Electronic and Electrical Engineers
Publications
Review technical manuscripts for IEEE Spectrum
Write occasionally for high-end audio publications
Education/Credentials
BSEE/MSCS/MBA
Past/Present Clients
Past Employee/advisor to several well known audio products manufacturers
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