Thats the
point. If thier is a phase reverse switch on some component and it is not
labeled then what degree do you assume? 180.

I never assume anything. However, experience tells me that it'll be 90
degrees, not 180. What's the point
in changing your bass 180 degrees?

Of course you never assume anything. You always have the time and energy to get
out the equipment and measure if its not labeled. Well I am sorry but I dont so
you have to make certain assumptions based on what is typical of something.
If you are getting cancelation then a phase swap of 180degrees could definantly
help that, hey so could 90 but I have definantly seen more 180s. But I dont
only deal with car audio, in fact my main profession is designing and operating
Pro Audio systems. And I will tell you that if it says phase reverse or
whatever then it most likely means 180.

It'll destroy your sound by cancelling out at the frequencies where your
subs overlap with your highs.


Unless they already are then it is the best thing you could do.