The XT-12M™ includes a high performance, true 1" compression driver with a replaceable diaphragm. The crossover network is a 2nd order design to help eliminate feedback and allow peak performance from the components. These are equipped with the GAD Infinity™ high frequency protection circuit. This circuit protects your high frequency driver from excessive DC current that is produced by distortion or overdriving the system. Instead of damaging your components, the Infinity™ circuit will help protect your investment for the long haul. Black carpet finish is standard on all XT Series models.