You can use one of several models from Bryston, Marchand or Berhinger.
If you talk with Paul Marchand he can probably design one of 4 different set ups they have available for your specific speaker.
Certain models like Magnepan's he can tell you not only the correct (manufacturers) setting and slopes, but what other people have tried.
It's not that complicated, you just need to do a bit of research.
The Bryston 10b has several configurations that will work for you with adjustment as well.
If you talk with Paul Marchand he can probably design one of 4 different set ups they have available for your specific speaker.
Certain models like Magnepan's he can tell you not only the correct (manufacturers) setting and slopes, but what other people have tried.
It's not that complicated, you just need to do a bit of research.
The Bryston 10b has several configurations that will work for you with adjustment as well.