I did use them with the MaxHemps and I thought they kept up fine. On acoustic music I prefered them turned off, because the Omegas go down into the 40s, which is plenty for that kind of music. But when I wanted to rock out, and needed a little more bass slam, the Adires did a great job. I set them at a level you couldn't really hear, so they blended well and added just a little bit of foundation. Because they're sealed, they have good speed and articulation. May not be the last word on 15-20hz extension, but I wasn't looking for that.
Hope that helps!
Steve