hey newbee that is just about the same as my db tests with my LSS, they are trying to produce sound at 16hz, but at 20hz the chart starts, my problem like most is in the 60hz to 70hz area, tried a lot of things got it closer but not as flat as i would like, and yes i agree they sound sweet, and they look fine,
itball i listen to classic rock 90% of the time, and bass drums and guitars are clean sharp and get down to the lower cycles easily, go to tys site and see if anyone is near your area for a audition, good luck