Looks good! Gotta love the cones! The graph shows excellent low end output. What size room are they in?
That is very interesting. I wonder if that boost is raising the levels from say 35 to 70? That would explain why I can hear such an increase when turning it. In other words the boost could be affecting a relatively wide range of bass frequencies as opposed to a "narrow notch"?In the graph above I have the B1 boosting around 50hz where I had a null at the listening postition.