What Happens If You Run 4-Ohm Speakers on an 8-Ohm Amp?

Using 4-ohm speakers with an amplifier rated for 8-ohm loads is one of the most common audio mistakes—yet also one of the most misunderstood. Many people assume it’s fine because “lower ohms means less resistance,” but the reality is more complicated. The mismatch can cause stress, overheating, or even amp failure if not handled properly.