Electrostatic speakers and low volume resolution

Trying a "super tweeter" sounds worth considering but, as with everything else, there are a couple of things I need to better understand. First, I'm not sure what the term "super" denotes unless it simply describes a driver capable of reproducing frequencies beyond that of "normal" tweeters. Anyway, because the piezo is, in effect, a capacitor that would be connected across the speaker posts, I assume, would it not also try to act as a HF filter to the signal delivered to the panel? I'll study this approach a little more and keep it on my list.

Coincidentally, I initiated a thread a while back regarding the use of a piezoelectric transducer with a full range driver to avoid having to incorporate a crossover. I got some grief over that post but it was something I tried in the late fifties with a "sweet sixteen" speaker that I had built and it worked well for me. I mention this only because at least two of the listed so called super tweeters are piezoelectric.

Davide, if I understand your comments, I guess all issues in the chain potentially have their beginnings at the source. In my case I was able to acheive some relief in low volume resolution using a lower powered amplifier. As far as which component should be under looked at first for this issue, my first consideration would be the speaker. I say this because, although they were one of my favorite speakers in the past (still are) I've owned two pairs of Magnepans and found them not at all good resolving at lower volumes.

Broadstone- I realized how seemingly inefficient my beloved electrostats were, and how high the threshold was for system noise, only after I switched to horns. I started back in the early 70's with a pair of old Quads (a/k/a '57's) and used them standing alone, then with various subwoofers and super tweets, including Deccas and Sequerra ribbons, before switching to a Crosby-modded '63 back in 1990. They served me very well until the mid-2000's. (I still have both pairs of Quads, and the Deccas, sorely in need of resto). When I switched to horns, my system was noisy as hell! All kinds of squirrely stuff, from noise on the line, to tube rush, to low level grounding anomalies. This isn't to dump on electrostats- to the contrary, still think the original Quad is the best mid-range reproducer in the biz, but what it taught me was that all the low level nuance (like the noise) was probably below the threshold of hearing on these things (and my ears were much younger then). Not suggesting you run out and buy horns, but I offer this only as another way to look at the same experience.
There is also something else- it seems that for every system, and every record, there is a 'right' volume that sounds natural. I rarely listen at really loud levels, but to realize what's on the record, I find that there is a spot that is just naturally right for that recording, and it varies.

"04-03-15: Broadstone
Thanks, Zd. I'm not advocating use of an EQ as a solution for all problems and I do understand, or at least am aware of, phase issues associated with additional artifacts being introduced into the sound stream. However, if I had the know how and did what you described in the first place, I would still be faced with the issues of my hearing loss, the extent of which is not bilaterally equal. To further complicate the scenario, my listening room, unfortunately, is my living room and using the auto room equalization capability of the 2496 has resulted in a noticeable improvement that I've been unable to acheive by other means."

Sorry if there was any confusion. My response was to Mapman's comment. I know your situation is unique and you have reasons for using an EQ that are outside the norm. If you didn't have your hearing issue, then my post would be more relevant to you. But I was in no way suggesting that you should stop using your EQ. If you'll remember, I was one of the people that pushed you to try it. I have the same EQ myself that I use to try and fix bad recordings.

"BTW, and somewhat off subject, some time ago I started a thread regarding phase testing using pink noise and how I noticed some migration of the sound as I progressed through increasing frequencies. I performed the same test after I did the automatic room equalization and, although this resulted in auto adjustment in only the lower bass frequencies, this migration of sound in the upper frequencies seems to have been reduced.
Broadstone (Threads | Answers | This Thread)"

That's a good observation. I don't know if FIM distortion would be the proper technical term, but that's kind of what's happening. By having the lower frequencies not proportioned correctly, they were having an effect on other frequencies.

Something similar, that you can try with your EQ, is to do the same thing with sounds that are bothering you, and the EQ is not helping. Sometimes, if you try to lower specific frequencies with an EQ in an attempt to fix an annoyance, you'll find that sometimes the problem gets worse. What happens is that along with lowering the problem sounds, other elements that are in the same frequency range, that are not giving problems, get lowered as well. This may actually have an enhancing, or spotlight effect on the problem, because you're cleaning up everything around it. On occasion, if you're lucky, you can actually raise the EQ frequencies that you are working with, and the other sounds in the same range, over power the problem. I know that sounds counter intuitive, but it does sometimes work.

ZD, thanks for the clarification and I DO remember your advice/suggestions regarding the use of an equalizer as a potential solution so your response was a little confusing. On the same subject, I don't remember if I thanked you for that but I'm doing it now; addition of the equalizer has been one of the best single things I've done. I don't always have it on but when it's needed, I don't see another way that I could've had the same success addressing my personal issues.

I'll do as you suggest here and try some of these adjustments, as counter intuitive as they may seem

Whart, I've used Martin Logan electrostats for about 35 years now (SL3, Prodigy, CLS2, Odyssey, Ethos and a center channel which I don't remember the model of) with all kinds of decent ancillary gear so am no stranger to their unique demands. In so many ways I like, or have at least become habituated to, their sound so I'm not likely to give them up. I agree with several of your comments but, even though I recognize the possibility, I'm not convinced that their efficiency is the problem.