Phase reversed?/other questions

[newbieguitarmaker]

I was reading about the blue velvet pickup because Frodo recommended one to me as a middle for my rg. And it said something about it being able to be phase reversed or something, what the hell is that? also I still can't decide between an evo neck pickup or an air norton, also dimarzio says both of them have different sounds depending on if it is flipped or not, flipped as in vai's neck pickup here

http://vai.com/Machines/guitarpages/...trnx_LRG01.jpg

[_FR0D0]

from Dimarzio's FAQ:
"... Can I get a single-coil pickup in reverse polarity?
All of our true single-coil pickups are available with reversed polarity and connections at no additional charge ..."

[newbieguitarmaker]

Originally Posted by _FR0D0

from Dimarzio's FAQ:
"... Can I get a single-coil pickup in reverse polarity?
All of our true single-coil pickups are available with reversed polarity and connections at no additional charge ..."

what is it though? Like how does the sound change?

[sick-boy]

Originally Posted by newbieguitarmaker

what is it though? Like how does the sound change?

Basically, when used in conjunction with another coil, it creates a humbucking effect, cutting out your 60-cycle hum.