Question about Cadence A7 HC Car Audio Amplifier

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Cadence A7 HC not working

I got a Cadence A7 it does not want to work. Goes directly to diagnostic.

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  • makjr13 Aug 18, 2008

    I was just thinking of paying to get it fixed because i don't want to try fixing it. I am scared i might just mess it up more.

  • izzy2526 May 11, 2010

    My amp fried my ground wire on my wild beast sub. I resodered it back and hooked it back up and now it keep going to diagnostic. Even with it not hooked up. What should i do. should I send in please reply soon. thank you.



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If the amp is in protect mode, it probably has shorted output transistors. To eliminate other possible problems, read through the following page:

Amp in Protection - Troubleshooting

Let me know if you have any other questions.

Posted on Aug 18, 2008


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Posted on Jan 02, 2017


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The prtection light normally responds to impedance problems with speakers....try diconnecting all speakers and see if situatioin continues,.........with the power light, ensure that you have proper grounding of the a,mplifier as well as insulationa dn fuse protecxtion mounting for the powe supplies

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No problem what to do

i go with the diamond d6 1200.1 for surejust make sure you can get those subs in 1ohm and if you want a 1200 watt class d id look in to planet audio they make real good amp for for half the price of that one

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It could be an overheating or power issue. It may be that the two speakers are loading it too much, which will cause it to overheat. Does the light eventually go off and the sound return ? Do you have the speakers wired in series or parallel ? What's the impedance of the speakers and the minimum continuous load for the amp ?

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