Hi, all. I don't know how what I make would marry with SongTowers, and, frankly, feedback has been ambivalent from customers using Salk's at best. So, maybe there is virtue to what is being said here. I have heard naked HT3's in a super system and loved what I heard. Worth mentioning is that my pads do not interfere with the direct radiation of the tweeter. I mention this because reading the above makes it sound like it does. What it is doing IS subtractive. For that reason I think a listener should give some time to it to adjust. The highs may recede into the soundfield but I am doubtful they will measure down in level. The part of the frequency response that likely will is around the crossover or in the lower bandpass of the tweeter where diffraction effects are most gratuitous. Subsequently, the ear may focus more into the midrange as things should be smoother going in. As Some Young Guy reported a week or so ago, the air is still there but it sounds more natural. Natural and clear is what I am striving for by removing some of the mechanics of dynamic speakers.
The model that Oneinthepipe owns have centered tweeters in an upright enclosure with parallel sides. For that reason I encouraged him to "give it a go". A trapezoid shape of an enclosure will spread what diffracted information there is more over time and should make it less audible. I have another reason for encouraging him . . I, too, want to know what to expect for myself. So much so, I will offer to send a set for a test on me. If this would include more than one listener, they should be seated in the sweet spot with the speakers out into the room some so they have room to open up.
What to expect? I'll let the guys quoted on page 3 of my website tell you that. None have flush mounted ribbons, tho, but the first fellow has trapezoid shape tweeter enclosures.