Paul, i was about to make me a pair of "lowther" based "horns". However, drawbacks are size of the speakers, and the size of the room! They are big and they require a lot of "breathing" room! They are rated at between 105-110db spl/1m!(depending of the Lowther model) So you can drive them, virtualy with less, than 1 watt! And they aren't exusively SET speakers! High quality SS can be good too! They have a very limited low-frq. extension, and the midrange is "colored"! So, how is that everybody who listen (good)horn speakers, falls-in-love with them? They do have something that dynamic or planar speaker don't! And that is the presenting the "illusion" of listening the "live music", that no other speaker can accomplish! How and why? I don't know! Check reviews on Edgarhorn!