Robert Deutsch

Readers with really long memories may recall the ESS Heil speakers, which had a tweeter whose working principle was described in ads as being like squeezing a cherry pit. Oskar Heil was undoubtedly a gifted inventor, and the Heil "Air Motion Transformer" principle is gathering new adherents. Elsewhere in this show report blog, I discuss the products from Adam Professional Audio, whose Accelerated Ribbon Technology is a variant of the Air Motion Transformer principle. Speakers from the Chinese company, Mark & Daniel, fall in the same category. They call their drivers "Directly Responding Emitter by Air Motion Structure" (DREAMS). The pair of Mark & Daniel Aragon Monitors (CN$5500), mounted on Aragon stands ($1900), which act as bass extenders. They sounded quite good, driven by the new Audio Oasis AMP-D1 amplifier (100Wpc, class-D, Made in Canada, CN$1495).

The advent of digital cameras has re-kindled my interest in photography, and I enjoy discuss photography in person and on some Internet forums. Doug Schneider of SoundStage.com (left) is another "photo guy," and one I know likes to use flash in his photography. I avoid using flash whenever I can, but I do use it sometimes; lately, I've been having more success with flash using the Gary Fong Lightsphere II, a light diffuser that bears a resemblance to something made by Tupperware. I had the Lightsphere II with me at the Show, so when I ran into Doug at FSI, I was excited about showing him this useful if strange-looking gizmo. He then took out his Lightsphere II from his camera bag, and we were ready for a "duelling Lightspheres" photo opportunity.

The first time I encountered Dunlavy's Signature Collection loudspeakers was at the 1993 Chicago Summer CES. I was familiar with, and had a lot of respect for, the speakers John Dunlavy had designed for the Australian Duntech brand, but I thought this new line clearly transcended his previous efforts—and at significantly lower prices. The model that I ended up reviewing—and, after the review (Vol.17 No.4), buying—was the SC-IV, subsequently honored as Stereophile's 1994 Loudspeaker of the Year and Product of the Year. In 1995, the SC-IV underwent changes, including a new woofer and a modified tweeter, resulting in some sonic improvements (see my Follow-Up review in Vol.18 No.3).

Dynaudio took a decidedly computer-oriented approach to providing a system for under $5000, with a choice between two powered wireless speakers: the Xeo 3 ($2300/pair) and the Xeo 5 (at $4500/pair, just under the $5000 limit). And these speakers are serious high-end products, not built-to-a-price budget offerings. You save on not having to buy an amplifier or cables (not always a trivial amount). The only catch is that there is no source component included; it's assumed that the consumer already has a suitable computer and/or iPod, iPad, or similar device.