The speaker allows current to flow through it more easily.
It just requires an amp that is designed to be able to handle that extra power moving through it. A larger power supply is the start, and a more robust output stage that can remain stable, along with better cooling to remove the heat.
Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs