The charge on the 806/807 bodies seems to be strong as they are very efficient like they should be. But this wouldn't have anything to do with the lack of extended high frequencies. I just think it's the diaphragms more than anything. Maybe I'm just expecting more from them than they can do. I have a pair of 808a drivers with older (good) diaphragms in them and they have a lot better HF extension. I have tried my aftermarket diaphragms in the 808s and they sound fine. Plenty of top end. So I'm just thinking it is the 806/807 natural sound. Don't get me wrong, it's not unbearable and they sound okay but nothing to blow your mind. Now the 808s sound great; especially with diaphragms that were in them when I bought them. I'm going to try the 908s and get the Pascalites too. If all is good then, I will probably sell the 806/807 to pad my pockets again. Thanks for all the inputs guys, I really appreciate it. Just wanted a reality check more than anything. Make sure I wasn't going backwards with this change.