Yes, Luiz, in English that is a passive "crossover".

And, if speaker system has knobs to adjust the crossover, the wirewound potentiometers used can get just as dry and corroded as any other potentiometer, try using that DEOXIT spray on those as well. Just a wee little bit goes a long way, avoid the idea that "more is better," drenching can be a bad thing.


--Mac