Originally Posted by jibjab
I had a quick question about crossovers. It seems that crossovers work all the same except for the subwoofer. From my understanding, whatever you set the crossover for a speaker, it won't play anything below
that frequency, and whatever you set it for a subwoofer, it won't play anything above
that frequency. Is that correct?
Yes but only for the crossovers in most AVRs.
More generally, crossovers consist of a high-pass filter (HPF) that blocks signals below the set frequency and a low-pass filter (LPF) that blocks signals above the set frequency.
In a typical AVR, there are HPFs available for the main speakers and a LPF for the sub. Inside most speakers, there are both to separate the woofer output from the midrange and both from the tweeter.