10" sub query

[GRU53M]

Nah, won't work.

That will just reverse the phase of both woofers, not just the one that is inverted.

He has been told how to achieve it properly.

If he is using two amps then it can be done.

[SPL77Civic]

The headunit would reverse the phase of both amps and from a thread of his on another forum he isn't using 2 sub amps and the ones that he has don't have phase switches.

[BIG`O]

bought a 800 wrms monoblock. will wire it in and see how it goes, turning the gain on my speakers up also made some engine noise through tweeters