Any added external electronic crossover will have caps in the active circuit, and in the power supply, to create the roll off desired.
It becomes a question of (a) using a passive crossover, at speaker level or (b) having a whole other gain stage ( called an active crossover) with extra cabling, extra RCA jack connections ( in and out ) and less than perfect electronics, repeated " one more time" in the added external active crossover's line stage.
The user gets to " pick their poison ", so to speak. I prefer as simple as possible, and HIGH efficiency. So, I run a two stage Direct coupled 2A3 amplifier into a two - way mass-loaded ALTEC system, with DIY passive crossovers, caps multiple bypassed to get the music played back OK to my ears.
Have fun in the hobby, I do !
Jeff Medwin
