Raising the While Flag on 604 Project

[Seadweller]

Yes, with an active crossover you will need 4 channels of amplification for your speakers.
The amp to run the horns does not need much power, a watt or 2 will do, but more is of course OK.

Thanks...So, does the active crossover allow you not only to set the XO point and slopes, but also adjust specific frequencies, similar to an equalizer?

Seems to me that XO's are more than just slopes and crossover points, that there are notch filters, uplift circuits, and other circuits that manage the drivers output.