Rep Power: 0

i have a kenwood KDC-MP425 head unit in my car and if i turn up the stereo past a certain point if the subs hit really hard the unit shuts off and then comes back on. i have stock intereior speakers and i am not sure what is going on. anyone have any clues whats happening?

 
Rep Power: 812

well lets see its a kenwood so you're prolly overheating it and the protection circuit turns it off. correction is get a better deck.

 
Rep Power: 0

i dont know if it is overheating cuz it can run for like 30 seconds and do it. but i am planning on buying a new deck it is about 2 years old, time to upgrade to an alpine.

 
Rep Power: 317

Is your car running when this happens, or is this with the engine off?
If its with the engine off, then its due to your amps drawing too much current, current your battery alone can't provide. This is pretty much normal if you have a big amp, been running the system for an extending time with the engine off, or if the battery is crapping out.
If this is occuring with the engine on, it could be that your ground connection is no good. Make sure you have your ground going to metal thats been cleaned off (no paint on the surface or anything crap like that).

 
Rep Power: 0

it does it when the car is running but it isnt the amp cutting out it is the headunit cutting off. i dont think that it has to do with the ground it has been checked, it worked fantastic up until about 6 months ago. i dont know if the headunit is craping out or not but it is just annoying when i wanna bump it if it hits too hard itll cut off.

 
Rep Power: 0

sounds like a voltage drop is causing it to shut down. If you have access to a DMM, watch the voltage as you turn the volume up on your deck.