Single driver speakers without the pitfalls?

I'm not really thinking of building my own speakers at this point, but I'm trying to learn more about the "full range" drivers that so many people seem to like to pair with SET amps. I'm also curious about Tekton, since their models are very competitively priced and very efficient (as in 94 db and up).

I see. Makes sense.

Keep in mind that the trend will be for smaller "efficient" speakers to have limited bass response (that's how a lot of the efficiency happens, power requirements go up exponentially as frequency decreases).

If it becomes a problem, and it may not depending on expectations, then that's where adding subs and blending them in well solves the problem effectively, if done right (not always easy to do but usually doable in the end).

The key to good coherency is often to not have crossovers in the midrange frequencies where most music (and voice) occurs. Bass region crossover points as is the case with subwoofers is not problematic in that way, but getting levels right in the bass (reasonable flat one would expect) more so. Electronic crossovers and room correction software is probably the most fail safe way. Again, I believe that is what MartyKL does and often recommends (smart guy!).

FWIW, my little Triangle Titus monitors sounded top notch in my decent size family room/kitchen area prior to the sub I used with them finally dying. That with mere 70s/80s vintage 15-20 watt (SS) receivers. I've always had teh Triangles targeted for trying a mimimal power tube amp someday, but would not put them back in that room without a sub or two again. I'd bet your DeCapos would likely do at least as good or probably much better even on a SET amp with subs. Without the subs on a SET, it might be a closer contest.

Rebbi,
Tekton 4.5s, good to about 50hrz, not bright, not shouty, great coherent stage, lovely mids, I really like them. Quality all around for about $300 new. I now use the 4.5s in 12x14 bedroom. Break-in time to sound their absolute best about 200 hrs (Fostex driver).

Mikirob,
Interesting! I hadn't heard of the 4.5's. Seems that they are working on a 4.5 v.2; no details on the Tekton site, though.
Just for the fun of it, I called Tekton yesterday and spoke to Eric Alexander. Very nice guy. I gave him my system and room details (including the SET amp) and he said I was kind of on the borderline but he'd suggest the Lore or Lore 2.0. They are both 98 db efficient... yowza!

I like the Tekton value proposition and they are on my list of speakers to hear someday. Have not had the opportunity to-date.

I did hear a pair of larger Zu's once at the Capital audiofest. THey sounded nice on smaller scale jazz and classical recordings but I was not impressed overall. However the Zu guy conceded to me that the 6 watt or so set they were running off was likely underpowered for certain kinds of music, so the book is still open there for me. Source material was all vinyl.