problem with the sound from a dvd player

ok I'm having a problem with the sound from a dvd player.  I have put a alpine cd player in with a AI-net to RCA converter so I can get sound.  Well the problem is that it plays for about 10-20 minutes and then the sound cuts out.  I checked the connections and found that I had a dead audio output from the dvd player so I changed it and tested it. It played for 1 hr. or so and did great and then earlier today I was watching a dvd and then the audio went out again.  So if anyone has any suggestions let me know. thanks

lets get this right? please list your whole route ex. radio to dvd to adapter to changer to amps? it could be too high of an input for the recieving piece? again im not sure of your setup be a little more specific those ai net adapters only work for certian configurations.im guessing a voltage problem, which converter do u have?the basic hardwire plug or a complete voltage converter?

alright from the radio I have the AI-net converter going to the dvd player for audio. then the video goes to the two screens. the dvd is a connected to constant 12 volts so you can turn it on whenever.I got the power directly to the battery.  the speakers are going directly to the alpine head unit. the cd changer is a fm modulator.

check the rca again..is the radio getting hot?does it come back on after 5-10 minutes?or when u turn it on/off? does your adapter have a voltage regulater on it? not many people know,,but alot of amps/radios/have assorted rca voltage that will overdrive a system.check the specs and see if they match. does the alpine cut out even if the radio is on?or only when the dvd is playing?

absolutely that verry well may be the problem...because it will go into protection and shut down when the heat reaches a certian temperature from when the load floats too high or too low, which may be from the commen ground you r using. you need to run individual speaker wires to each speaker. end of problem. youe stock speakers are most likely 4 ohms each .1 ground is gonna give a 1 ohm load.6 speakers i gonna be .5 ohms and shouldnt even last 5 minutes. if you want to test it.disconnect all the output wires.and connect two speaker up and turn it way up for about 5 minutes..i bet the problem will not appear

ok I will try that. But why would it play just fine when your just listening to the radio?