Hi David,
Well I was hoping someone besides me would post here.
I used to make a chunky stand-mount speaker called the Stormbringer. Ralph Karsten of Atma-Sphere posted these comments on Audiogon:
"AudioKinesis (Duke) is making some outstanding product. We recently got in a set of his Stormbringers for a customer of ours. I set them up at home and I have to say, I was quite unprepared for how good these speakers are! Of course, price is always a driving concern, but setting that aside for a moment (the Stormbringers are **very** reasonably priced), they were playing well out of their league, being very detailed, extended, relaxed and with a good portion of wallop thrown in. While not the last word in bass, they were clearly making it in the upper 20s and could shake the room. Again, they are very easy to drive, and while on paper not as efficient as our ZU Druids, they **couldn't** have been far behind! I think a lot of that has to do with what part of the curve you rate your efficiency from. An excellent speaker by any standard, if you pick up a set, just get in the car and **drive** before Duke comes to his senses :)"
I did not claim bass extension into the upper 20's for the stand-mount version of the Stormbringers; more like upper 30's or lower 40's. I have talked to Ralph about his statement, and he insists they shook the room on a note that he knows to have a fundamental in the upper 20's, but then my speakers are fond of his amps. 'Twas the S-30, which puts out increased power into an impedance peak, and I'd tuned the box fairly low so the boost from his amp interacting with the impedance peaks would extend the bass instead of making it boomy. The standmount Stormbringers were priced at $2600 a pair.
Ralph again:
"For quite a bit less than the ATCs, I think one would do better with a set of speakers from AudioKinesis. We had a set in recently and they were spectacular as well as reasonably priced."
And, once more:
"If you are on more of a budget, the ZU Druid (the new version) is not bad; I found that while the AudioKinesis was not *rated* the same efficiency, that it *behaved* as if it was just as efficient, but with greater bass impact and more definition."
I claimed 93 dB efficiency for the Stormbringers.
I don't think Ralph would mind if you gave him a holler.
Though not a stand-mount, the
Rhythm Prisms would be the approximate equivalent in my current lineup.
Duke