Let me start by saying that I'm not opposed to compensation components at all. The cabinet forms an acoustic filter and the driver's mechanical properties form a mechanical filter. So combining some electronics with the voice coil of the driver to form an electrical filter isn't unattractive to me at all. It's more of the same.But aren't there some Fostex drivers that are commonly used without additional components in certain cabinets? I don't have any experience with Fostex drivers, but I could have sworn I'd seen some reputable implementers making systems with them that worked pretty well using only acoustic EQ from the cabinet.