Et tu, Jerry? You're losing your love for the three ULS-15s?.
Funny you mention the ULS trim as a means of generating a flatter < 50 Hz response. I'd looked at tweaking this back when I was doing my hardcore Pro runs in the spring, as per advice that Dr. Hsu and a few folks in various threads had mentioned, and you actually told me here that 'this control has nothing to do with the flatness of the curves', and recommended going with 16 Hz trim. Yet in a room where you've got far more bass treatments than I can do/afford, these curves you ran suggest that leveraging the trim pre-Audyssey can be additionally productive. What changed your mind, out of curiousity?
My inconsistency can be attributed to one or more of the following:
- Advanced age
- Lack of understanding the ULF Trim adjustment
- So many things have changed in the interim that the results are indeed different
I hope it's not the first one, and is likely a combination of the last two. Anyway, measurements don't lie, and they show a clear difference for the ULF Trim settings (on paper, but not sure I can hear the difference).
It's not that I have lost any faith in the ULS-15's. There are several aspects to bass response: smoothness, extension, and output volume. IMO, the ULS-15's produce smooth bass, and the extension is clearly down to below 20Hz. Where the Submersives trump the Hsu's is in sheer output volume, if I understand what I have read. So, my initial thoughts are whether I want to expend a significant amount of money just for the sheer output. Or perhaps the green monster will have an effect.... (Darn you, Keith!)