i was trying to set it up and i don't think i'm doing it right.

here are my measurements

LF RF
36" 54"

LR RR
56" 61"

the measurement i got for the LF comes out to be 1.85. but i'm not too sure how to do the rest.

can anyone help me out?

 

I'm not sure what you're talking about--is this for the time correction in a signal processor?

 

yeah, in my alpine HU. basically it delays the signal to the speakers according to its distance to your head position.

 

Can't you just input the measurements onto the Alpine site? Upload the information a disk and load them onto your headunit.