Right. I think a general rule of thumb is to set your crossover 1/2 - 1 octave higher than your speaker's F3 - the point at which your speaker's output is 3db down.

If you're not familiar with F3, or your speaker manuf does not provide it, you should use whatever they tell you is the lowest frequency the speaker is capable of. So, if your speaker is alleged to play down to 28hz, you might set your xover at 40hz (1/2 octave) or 60hz (full octave).

This will help prevent the natural roll-off of your speaker compounding with the electronic roll-off of your crossover, and making a general mess.

-Joe

[This message has been edited by Nostalgia (edited November 17, 2003).]