I've had the 811B driven by the 806A for some time. The 811B with the welds cut and fastened to a wooden baffle has a very present and exciting sound. A bit too much so on some CD's. The 811B with the 2618 driver is a little more laid back but the 2618 really is a second line driver and somewhat veiled. I prefer the Martinelli 17" Woodhorn with the 806A.