Question about Alpine MRV-F345 Car Audio Amplifier
If I turn the volume up past half it shuts down and when I turn key off it resets and works till volume is raised again
This can be caused by too low of an ohm load, such as wiring subs in parallel at lower ohms than amp recommends. Or short speaker to body of car can cause it, or amp could have an internal problem. Like stated above try each speaker or disconnect one at a time to see if it is a speaker/wiring doing it. If amp gets too hot can also do it, but often it is overcurrent in the amp if it does it with high volume. Another less common issue could be lack of power so amp is drawing voltage too low for it to run, like if your fuse/wiring has a bad spot cutting down current or is not large enough/corroded/bad ground/etc.
Posted on Apr 22, 2008
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