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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
mapman's avatar
mapman
22,107 posts
 
"Every type of speaker involves tradeoffs,"

That is true, especially with limited budget.

For a SET amp in articular, if it were me, the thing worth trading off is low end extension, which is where the hardest work is required by far, exponentially so as the frequency decreases. Limiting/filtering low end extension as needed opens up many many possibilities. A smaller room will typically work in one's favor in that regard in that less work is required in smaller rooms.

You can get the low end extension off just a few watts as well but you need larger drivers/speakers in general and of course high quality larger speakers will cost more.

Tannoy is a line I would want to hear that might have some unique things to offer for the SET amp world.
mapman's avatar
mapman
22,107 posts
 
Reb,

I would not discount Triangle as a line to consider, if you can find them around these days. I'd mainly just look for models that are 91db + efficient and do not do much below 50 hz or so. For anything with more low end extension than that, I would make sure the efficiency ratings are truly higher and reflect efficiency at lower frequencies. Beware of smaller speakers that boast higher efficeinecies. They will either be accurate and have less low end extension or have more low end extension but the efficiency specs not cover teh low frequencies, as is the suspected case with the DeCapos.
mapman's avatar
mapman
22,107 posts
 
Focal is another. Focal and Triangle are both French and all I have heard share some common sonic attributes.

The right Focals or Triangles on a good SET amp would make a lot of lovely music. The French seem to have a knack for that kind of thing. Its a different sound than British or most any US I have heard for sure. Clean, crisp, detailed, nuanced, almost to a fault, which is where a nice tube amp might add just the right form of magic.
analogluvr
859 posts
 
I have tannoys and love them. Have heard zu and enjoyed those as well.
mapman's avatar
mapman
22,107 posts
 
An old story already but Zu did not do it for me with pop/rock music dynamics in teh one audition I heard at a show. That was Zu Essence off a SET amp. The ZU guy admitted more power was needed. Sounded nice with classical, jazz, acoustic music though.
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