Originally Posted by
Jdunk54nl
You risk overdriving your inputs and clipping them which could do a lot of harm to all parts of the amp/sub. The amp might go into protect mode due to being overdriven or you might fry some circuitry by sending too much voltage through it, you might fry a voice coil, etc. You will still get sound.
Now, that is what could happen, whether it does or not is dependent on how loud you listen if the music actually ever sends that much of a signal to the amp. With subs, it probably will.