What dynamic spkr. did you go to from electrostat?

When I designed and built my subwoofer systems (one 2-driver system for each of three front speakers) I was thinking about LF extension beyond the 40 Hz that my MG1.6 can do. However, as things have evolved, they let me go from cone drivers to panel according to the type of music I am playing, just by varying the X/O frequency. I must note right away that this is only possible because my subwoofer systems, which are flat to 20 Hz with a bit of equalization, can also go up to about 400 Hz without distortion. (This would not be true of most commercially produced subwoofers). Also, you need an electronic crossover where the frequency is easily adjusted with a knob. In practice I use X/O frequencies from 40 Hz to about 300 Hz according to the type of music. When I vary the frequency I am really transitioning from cones to panels. There is no doubt that some music eg: loud organ music, benefits from the power capabilities of six big (12 and 15 inch) cones driven by six 600 watt amps! On the other hand, quiet classical chamber music does fine with just the Maggies. Best of both worlds!

Chadnliz...My posting, referencing Maggies, was really about how you can transition between a planar and a cone speaker, according to suitability to the music, and would apply to electrostatics as well as Maggies.

Chadnliz...Planar bass (at least with Maggies)is smoother than any box speaker, and sounds as if it goes lower than it really does. Really good. It just doesn't go that low (MG1.6 roll off at 40 Hz) and SPL at low frequency is limited. Planars that don't need SW help are huge.