update III: The one FRX that I have(the other is being shipped to me today from Decware/was damaged in shipping by UPS), is breaking in. I have probably 20 hours on it, but I do not play it loud, just a medium volume. I will be real about this and not gush praise. Just the facts. Right now I notice that the speaker is balanced just the way that I had hoped for, i.e., violins do not screech, voices have no added sibilance, and the treble is still remarkable. It reminds me of horn treble except not harsh. The bass is almost non existent due to the fact that I am using the ZOB baffle board only until the cabinet is complete. I am really hoping for the bass to be as good as the rest of the balance in sound that this speaker offers. Also, I do not have the speaker positioned properly at this time, as it will become viable when the project is complete. Sometimes I use a subwoofer just to hear the difference in presentation. It is a fair balance, but I must adjust the crossover point of the sub to better blend with the speaker. Keep in mind that so far, I am only listening to one speaker in mono, and even more importantly, I am using a class 'D' 'T' amp because my class 'A' amp produces a lot of heat and I feel that the t amp is all that is necc. at this time. Of course, I am aware that the amp itself lacks in areas that are important to me, so I will not make any concrete statements about these speakers yet. Still, they do have some inherent qualities that shine through regardless of this amp choice. Next week, I should have the cabinet ready, have the new speaker to break in, and begin building the second cabinet. I am very interested in the result, as this has been my hobby for decades.