What's the greatest bargain in SET these days?


Hi, Gang,
I response to my recent review of the Reference 3A De Capo BE speaker, someone wrote that if you really want to hear them sing, you should try them with a SET amp, or words to that effect.
That got me thinking. The De Capo's are 92 db efficient, which (correct me if I'm wrong) seems kind of borderline for low-power SET amps.
In any event, right now I'm running mine with a pair of Manley Mahi mono-blocks. They are switchable from triode (20 watts) to "ultra linear" (40 watts). I run them in triode all the time, and in my room, the volume knob almost never goes past 9 o'clock; more would just be too loud.
All that said, what do you guys think of running the De Capo's with a SET amp? And if I did, what's the best bargain in SET's these days?
Thanks!
rebbi
Jetrexpro,
I haven't taken it to that level but I have been very, very careful to read the instructions several times before making anything permanent.
In some ways, this is - so far, anyway - an easier kit to build than my Bottlehead Seduction phono preamp, which I built 4 or 5 years ago. I seem to remember having to solder teeny little components on to the leads of valve bases in a rather cramped space that was very challenging. So far, the nice, clean layout of the 300 B driver PCB, which is what I'm currently working on, is making this an easier process.
The only thing that's been at all frustrating is that there have been a few design changes to this 2014 edition and I'm working with a combination of the 2010 edition of the manual and a beta of the 2014 manual. Sometimes it's been a little confusing but Brian is very accessible to his customers so I've never gotten stuck for too terribly long.
Reb. How many more steps?

Definitely reminds me of my electronic kit building days as a kid except this one costs way more and will sound much better than anything I've ever done. Still have all the tools though so with those and your journal one would be armed and dangerous. 😉
Map,
At this point, with the 3 PCB's all built up, most of what's left is "inter-wiring," that is, doing the wiring between the various PCB's themselves and between the driver PCB and the 300 B hard-wired "tag strip." There's also a little wiring and connecting to be done at some of the valve bases. The last step is to solder in the big Mundorf caps and install the RCA connectors, speaker posts and volume pot.
Then, I'll take various measurements to see if all looks well. After that, it's add in the tubes and power up.
So I'd say I'm more than 2/3 of the way into the build, but there's still a good deal more to do. And I'm a slow worker! ;-)
So TAS has finally come out with Dick Olsher's review of the Coincident Dynamo 34 SE. I find it an odd read... one of those reviews where the conclusion doesn't quite seem to match the body of the review.
He describes his dismay that his rectifier tube kept arcing on startup, which he said Coincident describes as "a normal event."
His review unit then kept blowing fuses and had to be shipped back to Coincident. The problem turned out to be a failed filter cap.
He lauds the unit for its exceptionally dimensional sound stage, but says that the lows and mids fell short of his Primaluna DiaLogue Premium. He then starts tube rolling, and after replacing the Chinese EL 34's and the 6SL7 with Tung Sol's, he feels the amp starts to show what it can do, although he cautions that because of the amp's 10.2 ohm source impedance off the 8 ohm taps, speaker matching is crucial. On his Basszilla DIY speakers (odd choice for a review!) he found the tonal balance "distinctly lightweight."
In the end, after a digression on the psychology of perceived value vs. price in the field of wine connoisseurship, he concludes that the Dynamo "may not always yield the most accurate tonal balance, but the crux of the matter is foot-tapping musical bliss."
Your thoughts?