Gmilan - you need to contact Gliderguider as he owns both models! He'll give you the straight goods. By the way I own the FAB Audio Model 1 speakers and think very highly of them - very natural and brutally transparent of all upstream components. Email with any questions about the product, company or post sales support. To answer your question, the FAB speakers are rated down to 32 or 35Hz I believe.
Cheers,
Kevin
Cheers,
Kevin