its does it all the time regardless of volume
Standard speakers through standard car wiring.
I have a pretty shit amp and sub, but has been and does work fine.
Output channels on the head unit have been snipped & taped for a few months, but it's played CD's and MP3's off SD cards fine.
It does it from cold and theres no change after its been on a while.
Like I said, radio works fine, Audio on the TV also works fine.
It does have 2 audio input channels, but they have been snipped and taped for months too.
Just external media thats causing it