High value, high efficiency speakers for SET amps


Hi, Gang,
I know that some of what I want to discuss here has been dealt with in other threads, some of them quite old, but I wanted to see if any of you fine, knowledgable folks are willing to help update and consolidate some of this info in a more current thread.
I am currently running my new Audio Note Kit 1 300B SET amp with a pair of Reference 3A De Capo speakers. I think it's a fine pairing and I am really enjoying what the 300B SET experience brings to the table in terms of musicality and emotional connection.
Still the De Capo, while supposedly an easy load due to its crossover-less design (only 1 cap on the tweeter with the mid-woofer directly coupled to the amp), is "only" rated at 92 db efficient, and based on the most recent Canadian NRC specs, that rating may be optimistic.
So, I am toying with the idea of trying a pair of more efficient, deliberately SET-friendly speakers in my rig, something that might also play lower and with greater dynamic swing than the De Capo's. Note that the De Capo's have served me well and I am very fond of them, but I can't help but wonder if my lovely Kit 1 would shine even better coupled to a VERY easy to drive speaker.
Devore and Audio Note are obvious options - the O/96 looks really tasty. Unfortunately, both of those choices are out of my budget, which I'm thinking maxes out (for real) at around $1500. I am willing to consider used equipment.
Tekton Lore 2.0: This is the speaker that Eric Alexander of Tekton has recommended when we've spoken on the phone, based upon my medium-small listening room and amp. I've read the epic "Lore vs. Zu" thread elsewhere in this forum, and clearly Tekton has its enthusiastic fans here. What I wonder is whether the Lore 2.0 has the refinement of the De Capo in terms of resolution, sweet high end and imaging. Audiogon'er Mikirob has pointed me to the many rave reviews of Tekton's speakers and I'm definitely interested.
I've corresponded with the Sonist folks (who are super nice) but their really high-efficiency, nearly-full-range floor stander is out of my budget.
Then there's the "vintage" route, going after some used JBL's or other high-efficiency "classics" from the 80's (or '70's). I am not inclined to go in this direction, but mention it because it's been suggested to me.
And then there's Omega. I spoke to Louis some time ago and he recommended his 7XRS hemp cone model. But I know all the raps on single driver designs and I'm cautious, although I would like to hear from any of you who own or have owned Omega's.
I'm in no rush to make a switch but I am very interested in your thoughts. Thanks, folks!
rebbi
Amps are either well designed and built, or not. A perfect measurement does not necessarily equal good sound.
Rob,
You make many logical points. SETs aren't unique in requiring some thought and planing regarding synergy and component matching. As you cite this is true for virtually all audio product to ensure successful outcomes. If you like Maggie speakers, be prepared to seek out high power amps to drive them. I don't understand the singling out of SETs as if nothing else mandates compatibility considerations. I would expect any person interested in a particular amplifier or speaker will do their due diligence as to what's required.
Charles,
Charles,
Completely logical. Everything in audio requires planning, experience for one's self...that is, how you explained, how we ultimately got to SET. It is a journey, in the end we make a decision as to what satisfies us the most according to our own personal value system. Different folks make their own, perhaps different choices. But you and I don't run around trying to tell them their choice was limiting or wrong.

I want to ask all the speaker makers here, why did you go to 4 ohm? You have forced amp makers to have limited choice. Why make speaker loads and efficiency harder to comply with, not easier? Do 4 ohm speakers inherently sound better? I think not.
"I don't understand the singling out of SETs as if nothing else mandates compatibility considerations."

As Atmasphere likes to point out, SETs along with many tube amps like his OTLs operate under a different paradigm than most gear in today's world. In addition, SETs have the additional disadvantage of delivering just a few precious watts.

So its not an issue unique to SETs, just perhaps of greater magnitude in general than in most cases. For top notch performance in all common cases a home audio enthusiast might encounter, you have to find speakers that are both efficient and an easy load to drive and the choices may be limited.

So its not a problem that is not solvable, just one in which there are more ways to go wrong and perhaps also of greater magnitude or consequence when they do.

Again, if listening mostly at low to moderate volumes, it may not be much of an issue at all but that does not address the needs of all home audio enthusiasts.

For example, in my case, it might work for a second system but not likely for my main system in that I could neither afford nor fit any of the speakers I have heard run off a SET that I considered to not have limitations that would matter to me.

Of course as always YMMV.

Just beware of teh limitations in any case. They are always there.
""I don't understand the singling out of SETs as if nothing else mandates compatibility considerations."
"

Of course they always do but also this thread is about speakers for SETs specifically so that is the topic at hand here. There are pros and cons with everything.