Now now friend. I think the suggestions from Ruined and I are sound, but will admit my experience is far less than his. I gotta believe Ruined was being half tongue in cheek with the comment you appear to take offense with.
From my standpoint, I suggested Velo' with built in EQ because it can tame the curve with ease. I own a Velo without an eq and love it but logic tells me if I had the eq, it would sound even better. Since I was unaware of the external Velo SMS-1 unit, I assumed it had to be built in. My bad and thanks PM, I'm going to look into that puppy.
I ain't kissing Ruineds butt here but knowing how into audio he was and still is, I simply believe an eq given your placement options is the way to go. Whether that's HSU with SMS-1 or another SVS or whatever.
I truly want you to be happy with your sub purchase and hope I don't come off biased and misinformed.
