Question about Infinity 7540A Car Audio Amplifier
Ok me and every stereo guy I know is lost on this one I installed the infinity 7540a amp to my alpine CDA-9853 head unit. When my truck is running the amp cuts out from a split second to a few seconds depending how how loud the stereo is. When my truck is just on but not running it does GREAT. I have checked the ohms at all the speakers and they are correct. power is 12.3 v with out the alt and 14.4 with the alternator at the amp power connector. Someone told me to try to upgrade the power system so I took all the stock 8gauge wire out and replaced it with 1/0. Still nothing. I have called and checked to make sure that the Head unit is not putting out too much current for the amp and they place I purchased it from told me that they should be fine together. I have 4gauge power and ground wire at 0 ohms on the amp. whats getting everyone is that its fine when my altenator and motor are not running..... PLEASE HELP
From what you describe it could be that its not getting enough power when the car is fully running. Its been a long time since I have had to deal with car audio problems. Does it happen when the vehicle is running but in park? If so it could be a short (Not likely though, it would be happening more often). Or it could be a loose connection somewhere that the vibrations of the vehicle are shaking. That would also be a problem if it happens when it moves. If it is still a problem, I would take it to a Checkers Auto. A lot of them offer free electrical testing.
Posted on Jul 02, 2006
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