@kenjit Sorry I’m really not communicating well at all, my fault. I’m only talking about the engineering design of the speaker amp combination and when you use powered speakers in which the amp is literally connected with no speaker cable to the amp the crossover is in the circuit before the amp. This gives many benefits one of the many benefits is perfect speaker dampening and transient response. Being able to design the crossover and other circuits that are 600 ohms not 8 ohms allows you to do many things to more perfectly tune the amp to the single speaker driver. Every driver in the speaker needs it’s own amp that is designed for the particular drivers and frequencies that driver will produce. To be more clear in this system there really isn’t a crossover at all it’s simply a simple circuit that only allows frequencies in which the driver is designed for. Hope that’s clear