I'm not sure how to PM a poster but I will write anyway.
This is to the Original Poster kjl1065 I am curious why you chose the SVS sub and not the Martin Logan sub since you have Martin Logans. I have a pair of ML Request and the Abyss Sub. I was thinking of getting the SVS since I need to vary the phase other than a 3 choice switch. I stumbled on the ML subwoofer series and they to have variable phase. So kjl1065 could you please enlighten me.