They are plus or minus 3 db at 31 hz. Ask Wilson what order the speaker is
2 nd or 4 th and stick with that Go around 37-38 hz. You never want overlap
at least 6 db higher for your specs are not flat at 31 hz try 73 hz kthey 38
on. A bunch of music , btw the Martin logan subs are not in the same league
a Svs 4000, or ultra 16 much better controlled ,the JL audio Fathom are the best of the bunch ,sealed are always more accurate then vented or passive radiator .
the ML subs are decent ,I am just speaking in absolute terms.