Agree the adjustability of my larger Ohm F5s make all the difference to get best results I most any room. Mine are series 3 from ~ 2008 and the newer drivers are mounted in older refurbed Ohm F cabinets.
See my system pics here :
Note the pics showing the level adjustment controls on the F5 and the diagram from Ohm which shows the unique and proprietary controlled wide dispersion pattern of the Ohm Walsh CLS driver. Nothing else out there like that. Happy to answer any questions.