My head unit is cutting out.

are you running an amp? or just the head unit with speakers? cause if you are running an amp, it may not be the right power for the speakers, and could be cutting out from being over powered. if it is from the headunit only with no amp, then you might need to replace your speakers to the right ohmage, and wattage size, you may be to low on it.if you are running an amp tho, check the amp wattage,it might not be powerful enough to power the speakers.and you would need to step the amp up , if the amp is a 100watt rms remember that it is not really 100 watt, it is broken down about 35 watts per speaker.and if you try over driving it the amp will over heat and shut off.