what does the bass crossover function do on my home theater subwoofer?

 

a crossover is a filter. It determines when your speaker starts getting qieter. On a graph, the speaker response seems tob e rolling off, and usually another speaker is coming on, getting louder, so it seems to be "crossing over". Dumb name anyway.

So when you set your sub xover to 80 Hz, it starts getting quieter at 80 Hz (actually, by definition, it's already 3dB down). If it's a 12dB / octave filter, it's 12dB quieter at 160 Hz, and so on.

That's why if you have a switch for 12/24 db/octave, go 24db/oct on a sub, because that makes it harder to discern location.

 

exactly what eld said...but for 95% of everyone that uses a home theater sub - just set it at 80Hz and dont worry about it. If you have large front channel speakers or if you have a real good set up, you could set the subs crossover a little lower - say 55-70Hz or at another frequency, but you cant go wrong with leaving it at about 80Hz for the most part.

 

mine just has a dial with min/max on it, i just set it right down the middle.....

 

Put it where it feels good...

 

If it's running on the LFE output of your HT receiver I'd set it to max and let the crossover in the receiver handle it. I can set my receiver between 60 to 120 Hz. I think it does a much better job but then again, it depends on the capabilities in your reciever. Either way 80Hz is a good setting.