What exactly does that relate to.
I am looking into the alpine 9813 with its
crossover feature. it says its fully adjustable
in 1/3 increments?

an example:

40 to 80 hz is one octave, so 40hz-53hz-66hz-80hz would be 1/3 octave points

so is that considered flexable?
Things get stretched out around 3k
where you would most likely crossover your speakers.?

I don't know yet, I'm still playing with points.

9813 ISN'T A TURE 1/3 OCTAVE EQ

I am looking into the crossover points.