what does crossover do (exactly)?

[eliteham]

I was always under the impression that the crossover was the frequency that seperated a frequency range into bass and midrange on amps with seperate outputs for bass and midrange. For example, my home stereo amp equipment has a crossover setting and then seperate outputs for the sub and the satellites.

What does the crossover on my bazooka amps with only 1 set of outputs do? I mean, the same signal goes to all the satellites/subs...

[NitroVW]

You want to try to keep all your frequencies separated so nothing gets cancelled out. Crossovers help you do this. Simply put it cuts off what frequencies the driver it's hooked up to will play. So if you have your xover on your sub amp set at 90Hz, your sub will play whatever the lowest frequency it will play is (20Hz for example) to 90Hz. Now, again an example, you set your midbass from 90Hz to 200Hz, then finally set your highs to 200Hz and up. Hope this helps.