passive crossover question

[bassman619]

I looked at my passive crossovers real good for once and I noticed something that I cant find an explanation for on the internet.. on one side it has prongs that say tweeters 0db -3 db -5db..I understand thats the slope of the crossover for the tweets..ok...but on the other side it has prongs that say standard and bi-amp ..whats this? It also has input high ..input low ..output woofer.output tweeter ..ive always had my input connected to input high and both the mid and tweet work..nvr had anything connected to input low

[MrSkippyJ]

The different db is level not slope.

The bi-amp lets you use all 4 channels of a 4 channel amp rather than using 2 or bridging the amp.