kinda confused right now i have an alpine 9884 and im using it to power 4 infinity 982.9s. whenever i turn it up above 15 volume, which is about halfway, the sound starts to get really garbly and distorted and i lose bass, but this only lasts for about 30 seconds at most and then it sounds normal for a few seconds and keeps going back and forth between garbly and clear.
this recently just started happening as i used to be able to hit 20 volume before it started to barely distort. and i only did this very seldomly. im pretty sure its not the speakers as they can handle up to 100w rms so....could this be the internal amp going bad?